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Smooth Mover: bicycle with electronic gearchange and adaptive suspension
Techieporn for you.
My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...%20Smover.html |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute wrote:
Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...%20Smover.html Jeeeesh! I own a Nav 400 and love it. |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sep 6, 4:57 pm, Woot wrote:
On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...igator%20L700%... Jeeeesh! I own a Nav 400 and love it. There's nothing on the Trek archive about the Navigator L700 "Smover" though here and there on the net one can find traces of Trek announcing it, sometimes as the L800. Trek still does catalogue an L700 but it a Nexus manual bike, nothing electronic. It doesn't even share the frame of the L700 "Smover", which is common with the L300 (marginally longer top tube). Nice to hear from another cyclist, Woot. Andre Jute Impedance is futile, you will be simulated into the triode of the Borg. -- Robert Casey |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sep 6, 6:27 pm, Andre Jute wrote:
Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...igator%20L700%... My point about arrogance while amusing is fully made. Thank you, Mr. Jute. Mr. Krueger take note... this is how it is done. Not by tiresome blathering as is your process. Peter Wieck Wyncote, PA Kutztown Space 338 |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute
wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...%20Smover.html My Trek is the 3400 - nice sensible road bike. Looks very similar to that, but without the chain guard. Doesn't have all that dodgy brake stuff, either. A reasonably heavy stop (say from 20mph in 5 seconds) only needs to dissipate 3kJ at 600W, which is no problem at all to dissipate in a pair of wheel rims. d -- Pearce Consulting http://www.pearce.uk.com |
Smooth Mover: bicycle with electronic gearchange and adaptivesuspension
Don Pearce wrote: On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...%20Smover.html My Trek is the 3400 - nice sensible road bike. Looks very similar to that, but without the chain guard. Doesn't have all that dodgy brake stuff, either. A reasonably heavy stop (say from 20mph in 5 seconds) only needs to dissipate 3kJ at 600W, which is no problem at all to dissipate in a pair of wheel rims. d There is a hill here about a km long, and about 7% slope, and when descending it one must use the brakes all the way down for safety reasons. But at the bottom the rims of my road bike have not heated, not even on a hot day. I have 3 bikes, all with reliable old steel frames and they all weigh about 11kg, but I'm 78Kg now, and I have no trouble riding 90k across town and back.... And during this winter I only rode the bike which has ONE gear, a 44t front cog, 18t rear cog, giving a 68inch gear. I was using 72" for awhile, but that proved too hard into headwinds when riding up some hills. I am rebuilding one bike with new fangled index gearing which will allow me the luxury of riding up some very steep hills here again. Patrick Turner. -- Pearce Consulting http://www.pearce.uk.com |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sep 6, 7:27 pm, (Don Pearce) wrote:
On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...igator%20L700%... My Trek is the 3400 - nice sensible road bike. Looks very similar to that, but without the chain guard. Doesn't have all that dodgy brake stuff, either. A reasonably heavy stop (say from 20mph in 5 seconds) only needs to dissipate 3kJ at 600W, which is no problem at all to dissipate in a pair of wheel rims. d -- Pearce Consultinghttp://www.pearce.uk.com Those brakes aren't dodgy, Don, they're hyper-competent; what I forgot to add is that they have a built-in modulator. They stop the one- eighth of a ton of me and the bike and light touring gear from thirty kph in 11 feet. I know, because I chewed up a pair of tyres while I practiced that one to perfection. But I agree with you, for casual use those roller brakes are overkill. However, you missed the point of the chain guard and the roller brakes: it isn't just that the brakes are better, and the chain guard civilized; what matters is that the totally enclosed brakes and the totally enclosed chain guard make it an allweather bike -- or that they are put on there because the specification is for an all-weather bike. Unlike rim brakes, roller brakes are immune to rain. Of course, a bike like that, in its primary market, The Netherlands, is intended and taken into one's family as a permanent fixtu it is not supposed to wear out. Rim brakes in the sort of daily commuter use a Dutch city bike gets will wear out a pair of rims every second year, a dangerous business because it isn't always possible to tell when the rim is worn so thin by the brake blocks that it collapses the next time you hit a bump in the road. Finally, rim blocks are dirty and throw off black stuff, not much chop on a daily commuter bike (which is what my Trek "Smover" pretends to be whenever the designers glance at the marketing brief). So, you see, my Smover's specification is quite consistent with the bike's supposed purpose, and even more so after I patched up overly sporting ergonomics. I bet your 3400 was sold to you as a "leisure" bike. I don't suppose either of us uses a bike as heavily as your median Dutch officeworker. Andre Jute Impedance is futile, you will be simulated into the triode of the Borg. -- Robert Casey |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Thu, 06 Sep 2007 20:09:24 -0700, Andre Jute
wrote: On Sep 6, 7:27 pm, (Don Pearce) wrote: On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...igator%20L700%... My Trek is the 3400 - nice sensible road bike. Looks very similar to that, but without the chain guard. Doesn't have all that dodgy brake stuff, either. A reasonably heavy stop (say from 20mph in 5 seconds) only needs to dissipate 3kJ at 600W, which is no problem at all to dissipate in a pair of wheel rims. d -- Pearce Consultinghttp://www.pearce.uk.com Those brakes aren't dodgy, Don, they're hyper-competent; what I forgot to add is that they have a built-in modulator. They stop the one- eighth of a ton of me and the bike and light touring gear from thirty kph in 11 feet. I know, because I chewed up a pair of tyres while I practiced that one to perfection. But I agree with you, for casual use those roller brakes are overkill. I'm a great fan of "keep it simple" for things like bikes. All those features add weight and complication; and of course if they decide to bust when you are out on the road, you are pushing. However, you missed the point of the chain guard and the roller brakes: it isn't just that the brakes are better, and the chain guard civilized; what matters is that the totally enclosed brakes and the totally enclosed chain guard make it an allweather bike -- or that they are put on there because the specification is for an all-weather bike. Unlike rim brakes, roller brakes are immune to rain. There ain't no such thing as an all-weather bike. As far as I am concerned my bike is a single-weather convenience. As soon as the wet stuff starts, I'm back in my car. But then I'm not a cyclist - I ride a bike. Of course, a bike like that, in its primary market, The Netherlands, is intended and taken into one's family as a permanent fixtu it is not supposed to wear out. Rim brakes in the sort of daily commuter use a Dutch city bike gets will wear out a pair of rims every second year, a dangerous business because it isn't always possible to tell when the rim is worn so thin by the brake blocks that it collapses the next time you hit a bump in the road. I'm well acquainted with bikes in the Netherlands, having ridden them for many, many miles there. The average dutch bike appears to be identical to those I remember from my childhood in the fifties. Hefty frame and generally Victorian engineering. Finally, rim blocks are dirty and throw off black stuff, not much chop on a daily commuter bike (which is what my Trek "Smover" pretends to be whenever the designers glance at the marketing brief). So, you see, my Smover's specification is quite consistent with the bike's supposed purpose, and even more so after I patched up overly sporting ergonomics. I bet your 3400 was sold to you as a "leisure" bike. I don't suppose either of us uses a bike as heavily as your median Dutch officeworker. I got my bike one January morning when I was feeling decidedly post-chrismas and was on my way to the local gym to enrol. I walked past the bike shop where a sale was on, and thought "hang on, this is a much better idea than a stupid gym". So I walked in and had a chat with the chap about what kind of uses I would be putting the bike to around London - ending up with this one, and it has been perfect. I rode it straight home up the hill to Hampstead, and arrive seeing spots, and with tunnel vision. I've ridden it pretty much daily since - always because I need to get somewhere, and I can now negotiate all of Hampstead's hills without even raising a sweat. d -- Pearce Consulting http://www.pearce.uk.com |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Fri, 07 Sep 2007 03:04:50 GMT, Patrick Turner
wrote: Don Pearce wrote: On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...%20Smover.html My Trek is the 3400 - nice sensible road bike. Looks very similar to that, but without the chain guard. Doesn't have all that dodgy brake stuff, either. A reasonably heavy stop (say from 20mph in 5 seconds) only needs to dissipate 3kJ at 600W, which is no problem at all to dissipate in a pair of wheel rims. d There is a hill here about a km long, and about 7% slope, and when descending it one must use the brakes all the way down for safety reasons. But at the bottom the rims of my road bike have not heated, not even on a hot day. I live up a hill exactly like that. I have never stopped at the bottom to check the temperature of the rims, but the brakes are always still stopping me without problems. I have 3 bikes, all with reliable old steel frames and they all weigh about 11kg, but I'm 78Kg now, and I have no trouble riding 90k across town and back.... And during this winter I only rode the bike which has ONE gear, a 44t front cog, 18t rear cog, giving a 68inch gear. I was using 72" for awhile, but that proved too hard into headwinds when riding up some hills. I am rebuilding one bike with new fangled index gearing which will allow me the luxury of riding up some very steep hills here again. Patrick Turner. I know about bikes like that. When I was at school I was a rower. Every time we arrived at the boathouse, we would have to build a bike for our coach to ride along the towpath. There was a huge pile of scrap wheels and frames round the back, and in ten minutes we could mix and match something rideable out of it all. d -- Pearce Consulting http://www.pearce.uk.com |
Smooth Mover: bicycle with electronic gearchange and adaptivesuspension
Don Pearce wrote: On Fri, 07 Sep 2007 03:04:50 GMT, Patrick Turner wrote: Don Pearce wrote: On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...%20Smover.html My Trek is the 3400 - nice sensible road bike. Looks very similar to that, but without the chain guard. Doesn't have all that dodgy brake stuff, either. A reasonably heavy stop (say from 20mph in 5 seconds) only needs to dissipate 3kJ at 600W, which is no problem at all to dissipate in a pair of wheel rims. d There is a hill here about a km long, and about 7% slope, and when descending it one must use the brakes all the way down for safety reasons. But at the bottom the rims of my road bike have not heated, not even on a hot day. I live up a hill exactly like that. I have never stopped at the bottom to check the temperature of the rims, but the brakes are always still stopping me without problems. I have 3 bikes, all with reliable old steel frames and they all weigh about 11kg, but I'm 78Kg now, and I have no trouble riding 90k across town and back.... And during this winter I only rode the bike which has ONE gear, a 44t front cog, 18t rear cog, giving a 68inch gear. I was using 72" for awhile, but that proved too hard into headwinds when riding up some hills. I am rebuilding one bike with new fangled index gearing which will allow me the luxury of riding up some very steep hills here again. Patrick Turner. I know about bikes like that. When I was at school I was a rower. Every time we arrived at the boathouse, we would have to build a bike for our coach to ride along the towpath. There was a huge pile of scrap wheels and frames round the back, and in ten minutes we could mix and match something rideable out of it all. Mine isn't as bad as that. I am moving to 32 spokes per wheel with D-rims, the old 36 spokers with flat section Mavics had done around 50,000km and began to crack with fatigue.... I have worn out so much bicycle gear after pedling an estimated 110,000km... I cycled much further than i drove last year. The steepest and worst arsole of a hill here is 3km long, averaging 8%, and I don't ride it much,Fitz's Hill, its 60km away just to get to it. But there's another ******* of a hill seen at http://www.images.act.gov.au/duslibrary/imagesact.nsf/view/3300800B698256C94A256D8D001C1077/$File/005119.JPG This is about 2km, and 7%, and a bit of traffic uses the narrow winding road to the top. There is a nice view over my town though. I used to do this on 48 x 18, but 15 years have passed, and maybe I need a 48 x 23. As you loose teeth as you age, you must put them onto the rear cluster.... I hope to be fit enough to do Fitz'z Challenge in November, http://www.pedalpower.org.au/events/...IntContId=1207 this time its the 20th ride, and I was in the first couple a long time ago. Last time I did it pretty fast at 40, and rode the whole lot alone, and not many were in it, but if I can finish it at all at 60 I will be pleased. Many people ride this now, so I should have company. Patrick Turner. d -- Pearce Consulting http://www.pearce.uk.com |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Fri, 07 Sep 2007 04:39:50 GMT, Patrick Turner
wrote: Don Pearce wrote: On Fri, 07 Sep 2007 03:04:50 GMT, Patrick Turner wrote: Don Pearce wrote: On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...%20Smover.html My Trek is the 3400 - nice sensible road bike. Looks very similar to that, but without the chain guard. Doesn't have all that dodgy brake stuff, either. A reasonably heavy stop (say from 20mph in 5 seconds) only needs to dissipate 3kJ at 600W, which is no problem at all to dissipate in a pair of wheel rims. d There is a hill here about a km long, and about 7% slope, and when descending it one must use the brakes all the way down for safety reasons. But at the bottom the rims of my road bike have not heated, not even on a hot day. I live up a hill exactly like that. I have never stopped at the bottom to check the temperature of the rims, but the brakes are always still stopping me without problems. I have 3 bikes, all with reliable old steel frames and they all weigh about 11kg, but I'm 78Kg now, and I have no trouble riding 90k across town and back.... And during this winter I only rode the bike which has ONE gear, a 44t front cog, 18t rear cog, giving a 68inch gear. I was using 72" for awhile, but that proved too hard into headwinds when riding up some hills. I am rebuilding one bike with new fangled index gearing which will allow me the luxury of riding up some very steep hills here again. Patrick Turner. I know about bikes like that. When I was at school I was a rower. Every time we arrived at the boathouse, we would have to build a bike for our coach to ride along the towpath. There was a huge pile of scrap wheels and frames round the back, and in ten minutes we could mix and match something rideable out of it all. Mine isn't as bad as that. I am moving to 32 spokes per wheel with D-rims, the old 36 spokers with flat section Mavics had done around 50,000km and began to crack with fatigue.... I have worn out so much bicycle gear after pedling an estimated 110,000km... I cycled much further than i drove last year. The steepest and worst arsole of a hill here is 3km long, averaging 8%, and I don't ride it much,Fitz's Hill, its 60km away just to get to it. But there's another ******* of a hill seen at http://www.images.act.gov.au/duslibrary/imagesact.nsf/view/3300800B698256C94A256D8D001C1077/$File/005119.JPG This is about 2km, and 7%, and a bit of traffic uses the narrow winding road to the top. There is a nice view over my town though. I used to do this on 48 x 18, but 15 years have passed, and maybe I need a 48 x 23. As you loose teeth as you age, you must put them onto the rear cluster.... I hope to be fit enough to do Fitz'z Challenge in November, http://www.pedalpower.org.au/events/...IntContId=1207 this time its the 20th ride, and I was in the first couple a long time ago. Last time I did it pretty fast at 40, and rode the whole lot alone, and not many were in it, but if I can finish it at all at 60 I will be pleased. Many people ride this now, so I should have company. Patrick Turner. No thanks! That isn't for me. As I say, I'm not a cyclist, I ride a bike. That means I get on it when I have somewhere I need to be. This stuff is just road clutter and purpose-free greenhouse gas generation. d -- Pearce Consulting http://www.pearce.uk.com |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
"Don Pearce" wrote in message ... On Thu, 06 Sep 2007 20:09:24 -0700, Andre Jute wrote: On Sep 6, 7:27 pm, (Don Pearce) wrote: On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...igator%20L700%... My Trek is the 3400 - nice sensible road bike. Looks very similar to that, but without the chain guard. Doesn't have all that dodgy brake stuff, either. A reasonably heavy stop (say from 20mph in 5 seconds) only needs to dissipate 3kJ at 600W, which is no problem at all to dissipate in a pair of wheel rims. d -- Pearce Consultinghttp://www.pearce.uk.com Those brakes aren't dodgy, Don, they're hyper-competent; what I forgot to add is that they have a built-in modulator. They stop the one- eighth of a ton of me and the bike and light touring gear from thirty kph in 11 feet. I know, because I chewed up a pair of tyres while I practiced that one to perfection. But I agree with you, for casual use those roller brakes are overkill. I'm a great fan of "keep it simple" for things like bikes. Me too - thumb the starter, hook a gear, give it a *big handful* and realise, moments later, the flickering in the corner of your left eye is the *traffic* on the inside lane... :-P Here's No. 2 son on my bike - all ginger and cautious; it was his first time back on one in a couple of years and was doubtless fearful of a 'low speed drop' !! http://www.apah69.dsl.pipex.com/show...GSX1400-01.wmv |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Fri, 7 Sep 2007 11:12:51 +0100, "Keith G"
wrote: "Don Pearce" wrote in message ... On Thu, 06 Sep 2007 20:09:24 -0700, Andre Jute wrote: On Sep 6, 7:27 pm, (Don Pearce) wrote: On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...igator%20L700%... My Trek is the 3400 - nice sensible road bike. Looks very similar to that, but without the chain guard. Doesn't have all that dodgy brake stuff, either. A reasonably heavy stop (say from 20mph in 5 seconds) only needs to dissipate 3kJ at 600W, which is no problem at all to dissipate in a pair of wheel rims. d -- Pearce Consultinghttp://www.pearce.uk.com Those brakes aren't dodgy, Don, they're hyper-competent; what I forgot to add is that they have a built-in modulator. They stop the one- eighth of a ton of me and the bike and light touring gear from thirty kph in 11 feet. I know, because I chewed up a pair of tyres while I practiced that one to perfection. But I agree with you, for casual use those roller brakes are overkill. I'm a great fan of "keep it simple" for things like bikes. Me too - thumb the starter, hook a gear, give it a *big handful* and realise, moments later, the flickering in the corner of your left eye is the *traffic* on the inside lane... I can take my bike places you can't take yours ;-) Here's No. 2 son on my bike - all ginger and cautious; it was his first time back on one in a couple of years and was doubtless fearful of a 'low speed drop' !! http://www.apah69.dsl.pipex.com/show...GSX1400-01.wmv That sort of riding looked like a guaranteed way to have a low speed drop. I imagine he's a bit more fluent now? d -- Pearce Consulting http://www.pearce.uk.com |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
"Don Pearce" wrote in message ... On Fri, 7 Sep 2007 11:12:51 +0100, "Keith G" wrote: "Don Pearce" wrote in message ... On Thu, 06 Sep 2007 20:09:24 -0700, Andre Jute wrote: On Sep 6, 7:27 pm, (Don Pearce) wrote: On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...igator%20L700%... My Trek is the 3400 - nice sensible road bike. Looks very similar to that, but without the chain guard. Doesn't have all that dodgy brake stuff, either. A reasonably heavy stop (say from 20mph in 5 seconds) only needs to dissipate 3kJ at 600W, which is no problem at all to dissipate in a pair of wheel rims. d -- Pearce Consultinghttp://www.pearce.uk.com Those brakes aren't dodgy, Don, they're hyper-competent; what I forgot to add is that they have a built-in modulator. They stop the one- eighth of a ton of me and the bike and light touring gear from thirty kph in 11 feet. I know, because I chewed up a pair of tyres while I practiced that one to perfection. But I agree with you, for casual use those roller brakes are overkill. I'm a great fan of "keep it simple" for things like bikes. Me too - thumb the starter, hook a gear, give it a *big handful* and realise, moments later, the flickering in the corner of your left eye is the *traffic* on the inside lane... I can take my bike places you can't take yours ;-) Here's No. 2 son on my bike - all ginger and cautious; it was his first time back on one in a couple of years and was doubtless fearful of a 'low speed drop' !! http://www.apah69.dsl.pipex.com/show...GSX1400-01.wmv That sort of riding looked like a guaranteed way to have a low speed drop. I imagine he's a bit more fluent now? Sure, of course - here's him back 2 minutes later: http://www.apah69.dsl.pipex.com/show...GSX1400-02.wmv Those bikes are pretty heavy at 230 kg (dry weight - add 15 quid's worth of petrol to that)... http://www.motorbikestoday.com/revie...s/gsx-1400.htm ...and after a break of at least a couple of years, puddling one backwards down a fairly sharp conctrete ramp isn't something you want to try too quickly until you get familiar with it! |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
"Peter Wieck" wrote in message ups.com... On Sep 6, 6:27 pm, Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...igator%20L700%... My point about arrogance while amusing is fully made. Thank you, Mr. Jute. Mr. Krueger take note... this is how it is done. Not by tiresome blathering as is your process. "Tiresome blather" is a phrase we often hear from people who somehow oblige themselves to listen to talks about something that is way over their head. |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
In article ,
Patrick Turner wrote: The steepest and worst arsole of a hill here is 3km long, averaging 8%, and I don't ride it much,Fitz's Hill, its 60km away just to get to it. But there's another ******* of a hill seen at http://www.images.act.gov.au/duslibr...00B698256C94A2 56D8D001C1077/$File/005119.JPG This is about 2km, and 7%, and a bit of traffic uses the narrow winding road to the top. There is a nice view over my town though. What's that town shown in the background? Is that your town or is it in a different direction not shown in the photo? Regards, John Byrns -- Surf my web pages at, http://fmamradios.com/ |
Smooth Mover: bicycle with electronic gearchange and adaptivesuspension
John Byrns wrote: In article , Patrick Turner wrote: The steepest and worst arsole of a hill here is 3km long, averaging 8%, and I don't ride it much,Fitz's Hill, its 60km away just to get to it. But there's another ******* of a hill seen at http://www.images.act.gov.au/duslibr...00B698256C94A2 56D8D001C1077/$File/005119.JPG This is about 2km, and 7%, and a bit of traffic uses the narrow winding road to the top. There is a nice view over my town though. What's that town shown in the background? Is that your town or is it in a different direction not shown in the photo? The photo was taken from a plane or chopper, and the buildings "behind" the mountain with a tower on it is the main civic centre of Canberra. There are several centres well spread out. Black mountain is only a few km from the centre of the "town" in the backround. http://www.totaltravel.com.au/travel...rracity/photos I found a posted pdf with a brief map of the Canbera suburbs showing blue lines for cycle paths. http://www.tams.act.gov.au/__data/as...nd_content.pdf I live in Watson, about 7km north from where it says CITY just north of the lake. The length of blue line bike paths totals hundreds of km, so you can always do a big different loop each time you go for a ride. Once you get away from city areas the traffic on weekdays is negligible because most people are at work, unemployement is at record lows... The map doesn't show several other newer lakes besides the the main old central lake. So you can cycle around for ages and get lost... If I ride that map from Watson to maximum north, then maximum south and back home along whatever is the shortest route its well over 100km, and takes me about 5 hours, non stop, and maybe I use about 3,000 calories.... Patrick Turner. Regards, John Byrns -- Surf my web pages at, http://fmamradios.com/ |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Fri, 07 Sep 2007 13:26:20 GMT, Patrick Turner
wrote: I live in Watson, about 7km north from where it says CITY just north of the lake. The length of blue line bike paths totals hundreds of km, so you can always do a big different loop each time you go for a ride. Once you get away from city areas the traffic on weekdays is negligible because most people are at work, unemployement is at record lows... The map doesn't show several other newer lakes besides the the main old central lake. So you can cycle around for ages and get lost... If I ride that map from Watson to maximum north, then maximum south and back home along whatever is the shortest route its well over 100km, and takes me about 5 hours, non stop, and maybe I use about 3,000 calories.... Patrick Turner. I think I would use my bike more there. Here in London we are getting a day of relative freedom - although it is necessary to register for it. http://www.londonfreewheel.com/ d -- Pearce Consulting http://www.pearce.uk.com |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sep 6, 8:20 pm, (Don Pearce) wrote:
On Thu, 06 Sep 2007 20:09:24 -0700, Andre Jute wrote: On Sep 6, 7:27 pm, (Don Pearce) wrote: On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...igator%20L700%.... My Trek is the 3400 - nice sensible road bike. Looks very similar to that, but without the chain guard. I got my bike one January morning when I was feeling decidedly post-chrismas and was on my way to the local gym to enrol. I walked past the bike shop where a sale was on, and thought "hang on, this is a much better idea than a stupid gym". So I walked in and had a chat with the chap about what kind of uses I would be putting the bike to around London - ending up with this one, and it has been perfect. I was in a bike shop the other day, listening to the owner tell another customer about the gyms, plural, he attends. I walked out without buying anything and told my driver to take me to a real bike shop, where the accents are less poncey but at least the management rides the bikes they sell. I rode it straight home up the hill to Hampstead, and arrive seeing spots, and with tunnel vision. I've ridden it pretty much daily since - always because I need to get somewhere, and I can now negotiate all of Hampstead's hills without even raising a sweat. No man, the idea is to raise a sweat (despite what I shall shortly write in another post to twit Patrick for bragging intolerably about his 100 mile rides). Though I must say I despise those fellows who make their sweat smell worse than it already does by straining it through Lycra. Cultured cyclists wear seersucker shirts... d -- Pearce Consultinghttp://www.pearce.uk.com I thought your description of buying your bike and riding it home the most humane thing you ever said, Don. In future I might even cut you some slack on electronics now I have discovered a heart beats in there somewhere. Andre Jute Visit Jute on Amps at http://members.lycos.co.uk/fiultra/ "wonderfully well written and reasoned information for the tube audio constructor" John Broskie TubeCAD & GlassWare "an unbelievably comprehensive web site containing vital gems of wisdom" Stuart Perry Hi-Fi News & Record Review |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sep 7, 8:02 am, "Arny Krueger" wrote:
"Tiresome blather" is a phrase we often hear from people who somehow oblige themselves to listen to talks about something that is way over their head. Far more likely to be beneath their dignity. Putting on airs without sufficient cleverness is your speciality. Lots of data passes through, very little content is included other than tree-tops posturing. Oh, since when have you adopted the Royal We? You do understand that your symbiosis with the commander is based on this behavior? Peter Wieck Wyncote, PA Kutztown Space 338 |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sep 7, 6:26 am, Patrick Turner wrote to
John Byrns: I found a posted pdf with a brief map of the Canbera suburbs showing blue lines for cycle paths. http://www.tams.act.gov.au/__data/as...12564/report_s... If I ride that map from Watson to maximum north, then maximum south and back home along whatever is the shortest route its well over 100km, and takes me about 5 hours, non stop, and maybe I use about 3,000 calories.... Patrick Turner. I take it those are "nutrition calories" or in fact 3,000,000 calories. If your respiration rate shoots up like that on hand of a little exercise, Patrick, you really want to get fit. I mean, after all, you're just sixty, these days a relatively young man. I ride here http://members.lycos.co.uk/fiultra/B...simon%201.html and back via here http://members.lycos.co.uk/fiultra/B...simon%202.html and burn just 118 nutritionist's calories in 22Km (1). Andre Jute No real corpses were harmed in the assembly of my golem Worthless Wieckless. I made him by stuffing a cow's bladder with pig offal. -- CE Statement of Conformity (1) My Ciclosport HAC4 measures power expenditure in watts, so the reading has to be converted. A convenient way is to take the reported average power at the end of the ride, multiply the reading by the hours of actual pedalling reported, and subtract one seventh of the result; the remainder is in real kilocals or nutrion calories. Just for the sake of absolute honesty among the paranoids here, the HAC4 assumes that on the level or downhill the cyclist expends no energy whatsoever (!!!), so it calculates power expenditure only while pedalling uphill. |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
"Peter Wieck" wrote in message ups.com... On Sep 7, 8:02 am, "Arny Krueger" wrote: "Tiresome blather" is a phrase we often hear from people who somehow oblige themselves to listen to talks about something that is way over their head. Far more likely to be beneath their dignity. Interesting Peter that you can equate ignorance with dignity and keep a straight facer. Now that takes serious levels of pomposity! Putting on airs without sufficient cleverness is your speciality. What airs Peter? Apparently you decided to play Johnny-come-lately white knight on a horse, and get revenge against me for who I don't really quite know. Now those are some heady airs you are putting on, there. Unfortunately, it backfired - big time! Lots of data passes through, very little content is included other than tree-tops posturing. Just the relevant facts, ma-am. Oh, since when have you adopted the Royal We? Its not about royalty, its about the problem with dealing with noisy know-it-alls, who much to their embarassment, don't know it all. You do understand that your symbiosis with the commander is based on this behavior? I understand rage that some people experience after humiliating themselves in public, and what it drives them to. Makes people say the darnedest things! As far as the Middiot goes, his animator did manage to humiliate himself in public a great many times, which resulted in him developing the Middiot persona for revenge. I think I know who the Middiot's animator is, and frankly the more time and experience I get, he reminds me of a certain Peter unhh W-something... |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
Keith G said
..and after a break of at least a couple of years, puddling one backwards down a fairly sharp conctrete ramp isn't something you want to try too quickly until you get familiar with it! Even after years of practice, I find riding a motorcycle backwards almost impossible. I still pootle gingerly, and just hope it doesn't look as ungainly as it feels. Lots of positive feedback in the steering, and unsettling reaction from the brakes. In theory the most elegant option is to freewheel feet-up backwards in an arc without touching the brakes until you are pointing downhill, and then zoom off in one seamless manoevre. Never summoned up the courage. Ian |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
"Ian Iveson" wrote in message . uk... Keith G said ..and after a break of at least a couple of years, puddling one backwards down a fairly sharp conctrete ramp isn't something you want to try too quickly until you get familiar with it! Even after years of practice, I find riding a motorcycle backwards almost impossible. I still pootle gingerly, and just hope it doesn't look as ungainly as it feels. Yes, it always does - especially when you are at full stretch!! Lots of positive feedback in the steering, and unsettling reaction from the brakes. In theory the most elegant option is to freewheel feet-up backwards in an arc without touching the brakes until you are pointing downhill, and then zoom off in one seamless manoevre. Never summoned up the courage. I can scoot down that ramp backwards and turn the bike with only a couple of dabs with my right foot, but that was the first time my son had been on a bike in a couple of years! |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sep 7, 10:22 am, Andre Jute wrote:
The usual pretentious tripe. Hey there, Mr. Jute. Let's try a new concept given your past poses and demonstrated Munchausen Syndrome. Let's see some identifiable pictures of *you* on the bicycle, perhaps holding a local paper showing date and headline. Otherwise, it is far more credible that you have found some pictures and simply posted them to your website without other than your word (*chuckle*) as provenance. I seem to remember pictures offered with your book posed carefully as if to represent the present you... It is all of-a-piece. What are you hiding? Peter Wieck Wyncote, PA |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute
wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...%20Smover.html Probably could buy a car for what that costs... |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
I can scoot down that ramp backwards and turn the bike with only a
couple of dabs with my right foot, but that was the first time my son had been on a bike in a couple of years! Then you shall be my inspiration. Can't be outdone by a uk.rec.audio stripling. Hang on a mo.... Hmm...bugger. Nearly cost me two indicators and a mirror. I blame the Metzlers. All the same I have discovered the perfect manoevre that works even in confined spaces. You start off like you are going to freewheel in an arc feet up, but as soon as you gather a bit of speed and start to turn you grab the front brake, as if in panic, whereupon the anti-dive (GPZ900) flings the front end up so the bike pivots about the footrests and applies the rear brake to sustain the skewed reverse stoppie. Now you can use the momentum in the desired direction of travel to pirouette a half turn, putting you in the perfect position to wheelie off down the street to the envious amazement of your puny neighbours. It all looks very Lone Ranger. Didn't quite make the half-twist this time. The several dozen Slovakians that live next door are still jeering. I remember a film...Buster Keeton or Keystone Cops I guess, where a policeman reverses a motorcycle...an Indian maybe...so naturally like you might not notice anything peculiar. I believe reverse gears were quite common for sidecar duty. If you've never tried a combo, BTW, you should. Not with linked sidecar brake, which ruins all the fun. Turns those wet autumn leaves into total entertainment. Ian |
Smooth Mover: bicycle with electronic gearchange and adaptivesuspension
Andre Jute wrote:
Those brakes aren't dodgy, Don, they're hyper-competent; what I forgot to add is that they have a built-in modulator. They stop the one- eighth of a ton of me and the bike and light touring gear from thirty kph in 11 feet. I know, because I chewed up a pair of tyres while I practiced that one to perfection. But I agree with you, for casual use those roller brakes are overkill. A fat man on a granny bike braking at over 1g! Don't the laws of physics apply in Eire these days? -- Eiron. |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sat, 08 Sep 2007 08:42:58 +0100, Eiron wrote:
Andre Jute wrote: Those brakes aren't dodgy, Don, they're hyper-competent; what I forgot to add is that they have a built-in modulator. They stop the one- eighth of a ton of me and the bike and light touring gear from thirty kph in 11 feet. I know, because I chewed up a pair of tyres while I practiced that one to perfection. But I agree with you, for casual use those roller brakes are overkill. A fat man on a granny bike braking at over 1g! Don't the laws of physics apply in Eire these days? Quite so. That comes out at 1.05g. Centre of mass combined with wheelbase tell us that he performed the last 8 feet of that stop flat on his face in the road. But that is a perfectly legitimate way of stopping your bike. Anyone who wants to do the sum the easy way just pop this (30 kph)^2 / (2 * 11 ft) in g into Google. I rarely use an other calculator these days. d -- Pearce Consulting http://www.pearce.uk.com |
Smooth Mover: bicycle with electronic gearchange and adaptivesuspension
Andre Jute wrote:
Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...%20Smover.html Much too messy. Proper bike: http://www.on-one.co.uk/index.php?mo... &PAGE_id=131 Roy. |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sat, 08 Sep 2007 10:06:09 +0100, Roy roy@somedomainsomewhere
wrote: Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...%20Smover.html Much too messy. Proper bike: http://www.on-one.co.uk/index.php?mo... &PAGE_id=131 Roy. A step too far for me. I need my gears, and I need a freewheel. Comfort comes first. d -- Pearce Consulting http://www.pearce.uk.com |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
"Ian Iveson" wrote in message . uk... I can scoot down that ramp backwards and turn the bike with only a couple of dabs with my right foot, but that was the first time my son had been on a bike in a couple of years! Then you shall be my inspiration. Can't be outdone by a uk.rec.audio stripling. Hang on a mo.... Hmm...bugger. Nearly cost me two indicators and a mirror. I blame the Metzlers. All the same I have discovered the perfect manoevre that works even in confined spaces. You start off like you are going to freewheel in an arc feet up, but as soon as you gather a bit of speed and start to turn you grab the front brake, as if in panic, whereupon the anti-dive (GPZ900) flings the front end up so the bike pivots about the footrests and applies the rear brake to sustain the skewed reverse stoppie. Now you can use the momentum in the desired direction of travel to pirouette a half turn, putting you in the perfect position to wheelie off down the street to the envious amazement of your puny neighbours. It all looks very Lone Ranger. Sounds a bit more like 'Tonto' to me... If you need to get a bike to face the other way in a *cool* fashion and it has a centre stand, pull the bike over toward you 'til it's balanced and spin it round with the right amounts of push on the back end and pull on the handlebars - only works on the flat and only if the bike *lends itself* to such a manoeuvre. Do it in a controlled manner and *rehearse* it before you go public... Didn't quite make the half-twist this time. The several dozen Slovakians that live next door are still jeering. You'll be in the UK then.... I remember a film...Buster Keeton or Keystone Cops I guess, where a policeman reverses a motorcycle...an Indian maybe...so naturally like you might not notice anything peculiar. I believe reverse gears were quite common for sidecar duty. Yep. Still available on the Russian combos, I gather... If you've never tried a combo, BTW, you should. Not with linked sidecar brake, which ruins all the fun. Turns those wet autumn leaves into total entertainment. All the bikes I had (that I can remember) over the years are he http://www.apah69.dsl.pipex.com/mybikes/mybikes.htm The Matchless (4th from the bottom) was a combo when I got it - great fun! Actually, I was considering a combo earlier this year but the *not inconsiderable* prices added to the total impracticability (and space constraints) pushed that one onto the back burner for the forseeable... |
Smooth Mover: bicycle with electronic gearchange and adaptivesuspension
Don Pearce wrote:
On Sat, 08 Sep 2007 08:42:58 +0100, Eiron wrote: Andre Jute wrote: Those brakes aren't dodgy, Don, they're hyper-competent; what I forgot to add is that they have a built-in modulator. They stop the one- eighth of a ton of me and the bike and light touring gear from thirty kph in 11 feet. I know, because I chewed up a pair of tyres while I practiced that one to perfection. But I agree with you, for casual use those roller brakes are overkill. A fat man on a granny bike braking at over 1g! Don't the laws of physics apply in Eire these days? Quite so. That comes out at 1.05g. Centre of mass combined with wheelbase tell us that he performed the last 8 feet of that stop flat on his face in the road. But that is a perfectly legitimate way of stopping your bike. I just tried a normal stop from 20mph on decent tarmac. It took 12 yards which averages 0.37g, and the back wheel was hopping about. I expect 0.5g would be a reasonable maximum if I moved down and back, or a bit more if I wasn't so fat. Perhaps André meant 11 yards, or perhaps he's just won another thousand euros after betting that someone would point out the deliberate error. :-) -- Eiron. |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sat, 08 Sep 2007 13:10:34 +0100, Eiron wrote:
Don Pearce wrote: On Sat, 08 Sep 2007 08:42:58 +0100, Eiron wrote: Andre Jute wrote: Those brakes aren't dodgy, Don, they're hyper-competent; what I forgot to add is that they have a built-in modulator. They stop the one- eighth of a ton of me and the bike and light touring gear from thirty kph in 11 feet. I know, because I chewed up a pair of tyres while I practiced that one to perfection. But I agree with you, for casual use those roller brakes are overkill. A fat man on a granny bike braking at over 1g! Don't the laws of physics apply in Eire these days? Quite so. That comes out at 1.05g. Centre of mass combined with wheelbase tell us that he performed the last 8 feet of that stop flat on his face in the road. But that is a perfectly legitimate way of stopping your bike. I just tried a normal stop from 20mph on decent tarmac. It took 12 yards which averages 0.37g, and the back wheel was hopping about. I expect 0.5g would be a reasonable maximum if I moved down and back, or a bit more if I wasn't so fat. Perhaps André meant 11 yards, or perhaps he's just won another thousand euros after betting that someone would point out the deliberate error. :-) I'd be very surprised if you could ever reach 0.5g on a pushbike, unless it is a recumbent. You just sit too tall with respect to the front wheel position. If your back wheel was hopping, you had reached the limit, and it is really difficult to do anything but move your body forwards under braking - there is nothing to brace against. So maybe he did mean 11 yards, but that would be a shame because it would mean those fancy brakes couldn't actually match a normal set. d -- Pearce Consulting http://www.pearce.uk.com |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sep 6, 8:09 pm, Andre Jute wrote:
On Sep 6, 7:27 pm, (Don Pearce) wrote: On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...igator%20L700%.... My Trek is the 3400 - nice sensible road bike. Looks very similar to that, but without the chain guard. Doesn't have all that dodgy brake stuff, either. A reasonably heavy stop (say from 20mph in 5 seconds) only needs to dissipate 3kJ at 600W, which is no problem at all to dissipate in a pair of wheel rims. d -- Pearce Consultinghttp://www.pearce.uk.com Those brakes aren't dodgy, Don, they're hyper-competent; what I forgot to add is that they have a built-in modulator. They stop the one- eighth of a ton of me and the bike and light touring gear from thirty kph in 11 feet. I know, because I chewed up a pair of tyres while I practiced that one to perfection. But I agree with you, for casual use those roller brakes are overkill. Oops, clearly a typo. My file copy says "24 (!!) feet". Can't account for what happened to turn the two exclamations into the main message... Anyhow, 24 feet from thirty klicks is still very impressive, about a third better than any rim braked bike would manage, and about a fifth better than a bike with disc brakes would manage under the same circumstances . It is all down to the modulator in the roller brake, which works like ABS on cars, relaxing the brake just before the wheel starts skidding. For those of you who want to know the science, here is a reliable authority on the subject: "The maximum braking force that can be applied to a vehicle through its wheels -- the mass of air having its own retarding force -- is limited by the friction between the tire and the road, and is equal to the weight of the vehicle multiplied by the coefficient of friction. On a dry pavement, this coefficient could be as high as 1; with a coefficient of unity, retardation would be 1g or 32.2ft/s^2 and the stopping distance in feet would be V^2/29.9 where V is the speed in mph. I must stress though that this is on an ideal surface such as does not exist outside a test facility..." (p98, Designing and Building Special Cars, by Andre Jute, Batsford, London 1985) For those without the math, the formula transforms as follows to permit us to calculate average retardation in fractions of one gravity when we know the entry speed and the stopping distance: V^2/(29.9*D) where V is speed in mph and D is stopping distance in feet. Taking my example of 24ft from 30kph, we need first to convert 30kph to mph, which is 18.64mph. So (18.64*18.64)/(29.9*24) gives us an average retardation for the roller brakes, aided by the anti-skid modulation, of 0.484g. This may be compared, as above, to around 0.4g achievable with disc brakes and around 3.5g with the sort of rim brakes usually fitted to racing bikes. Going upmarket clearly doesn't mean less efficiency -- quite the contrary: it means extraordinary efficiency. Those of greater discrimination, who furthermore spend more money, believe they have a right to a more pleasing product, In this case I have received excellent value for my money! Andre Jute The trouble with most people is not what they don't know, but what they know for certain that isn't true. ---Mark Twain Visit Jute on Amps at http://members.lycos.co.uk/fiultra/ However, you missed the point of the chain guard and the roller brakes: it isn't just that the brakes are better, and the chain guard civilized; what matters is that the totally enclosed brakes and the totally enclosed chain guard make it an allweather bike -- or that they are put on there because the specification is for an all-weather bike. Unlike rim brakes, roller brakes are immune to rain. Of course, a bike like that, in its primary market, The Netherlands, is intended and taken into one's family as a permanent fixtu it is not supposed to wear out. Rim brakes in the sort of daily commuter use a Dutch city bike gets will wear out a pair of rims every second year, a dangerous business because it isn't always possible to tell when the rim is worn so thin by the brake blocks that it collapses the next time you hit a bump in the road. Finally, rim blocks are dirty and throw off black stuff, not much chop on a daily commuter bike (which is what my Trek "Smover" pretends to be whenever the designers glance at the marketing brief). So, you see, my Smover's specification is quite consistent with the bike's supposed purpose, and even more so after I patched up overly sporting ergonomics. I bet your 3400 was sold to you as a "leisure" bike. I don't suppose either of us uses a bike as heavily as your median Dutch officeworker. Andre Jute Impedance is futile, you will be simulated into the triode of the Borg. -- Robert Casey |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sep 7, 4:02 pm, wrote:
On Thu, 06 Sep 2007 16:27:41 -0700, Andre Jute wrote: Techieporn for you. My Trek Navigator L700 "Smover" Bicycle with Automatic Gearchange and Electronic Adaptive Suspension delivered by Shimano Di2 Cyber Nexus Groupset a photo essay by André Jute http://members.lycos.co.uk/fiultra/B...igator%20L700%... Probably could buy a car for what that costs... Not a new car, MMM. The quality of the bike will please long after the price is forgotten. Andre Jute No real corpses were harmed in the assembly of my golem Worthless Wieckless. I made him by stuffing a cow's bladder with pig offal. -- CE Statement of Conformity |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sep 8, 12:42 am, Eiron wrote:
Andre Jute wrote: Those brakes aren't dodgy, Don, they're hyper-competent; what I forgot to add is that they have a built-in modulator. They stop the one- eighth of a ton of me and the bike and light touring gear from thirty kph in 11 feet. I know, because I chewed up a pair of tyres while I practiced that one to perfection. But I agree with you, for casual use those roller brakes are overkill. A fat man on a granny bike braking at over 1g! Find the fat on my pic overlooking Dunworly Bay, several places on my bike pages, and I won't put you in hospital when I run into you. You mean an opa bike, not an oma bike (or granny bike as you ignorantly have it). You wouldn't know either if you saw them, sonny. Don't the laws of physics apply in Eire these days? Same as everywhere else. Here is a reliable authority on the subject: "The maximum braking force that can be applied to a vehicle through its wheels -- the mass of air having its own retarding force -- is limited by the friction between the tire and the road, and is equal to the weight of the vehicle multiplied by the coefficient of friction. On a dry pavement, this coefficient could be as high as 1; with a coefficient of unity, retardation would be 1g or 32.2ft/s^2 and the stopping distance in feet would be V^2/29.9 where V is the speed in mph. I must stress though that this is on an ideal surface such as does not exist outside a test facility..." (p98, Designing and Building Special Cars, by Andre Jute, Batsford, London 1985) The math is developed elsewhere, where you can go find it. -- Eiron. Do come again, Eiron. It is always a giggle when you take yourself seriously. Andre Jute Impedance is futile, you will be simulated into the triode of the Borg. -- Robert Casey |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sep 8, 1:22 am, (Don Pearce) wrote:
On Sat, 08 Sep 2007 08:42:58 +0100, Eiron wrote: Andre Jute wrote: Those brakes aren't dodgy, Don, they're hyper-competent; what I forgot to add is that they have a built-in modulator. They stop the one- eighth of a ton of me and the bike and light touring gear from thirty kph in 11 feet. I know, because I chewed up a pair of tyres while I practiced that one to perfection. But I agree with you, for casual use those roller brakes are overkill. A fat man on a granny bike braking at over 1g! Don't the laws of physics apply in Eire these days? Quite so. That comes out at 1.05g. Centre of mass combined with wheelbase tell us that he performed the last 8 feet of that stop flat on his face in the road. But that is a perfectly legitimate way of stopping your bike. Anyone who wants to do the sum the easy way just pop this (30 kph)^2 / (2 * 11 ft) in g What's this nonsense, Don, a wiki written by you and the equally useless Eiron? Didn't they teach you in tech school to use compatible units? You're mixing Imperial and Metric measures hand over orange. Here is a reliable authority on the subject: "The maximum braking force that can be applied to a vehicle through its wheels -- the mass of air having its own retarding force -- is limited by the friction between the tire and the road, and is equal to the weight of the vehicle multiplied by the coefficient of friction. On a dry pavement, this coefficient could be as high as 1; with a coefficient of unity, retardation would be 1g or 32.2ft/s^2 and the stopping distance in feet would be V^2/29.9 where V is the speed in mph. I must stress though that this is on an ideal surface such as does not exist outside a test facility..." (p98, Designing and Building Special Cars, by Andre Jute, Batsford, London 1985) That math is properly and correctly developed elsewhere in this thread, where you can go find it. into Google. I rarely use an other calculator these days. You should learn how and you won't perpetrae further ****ups like in this post. Andre Jute Our legislators managed to criminalize fox-hunting and smoking; when they will get off their collective fat backside and criminalize negative feedback? It is clearly consumed only by thickoes. |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sat, 08 Sep 2007 17:44:24 -0700, Andre Jute
wrote: On Sep 8, 1:22 am, (Don Pearce) wrote: On Sat, 08 Sep 2007 08:42:58 +0100, Eiron wrote: Andre Jute wrote: Those brakes aren't dodgy, Don, they're hyper-competent; what I forgot to add is that they have a built-in modulator. They stop the one- eighth of a ton of me and the bike and light touring gear from thirty kph in 11 feet. I know, because I chewed up a pair of tyres while I practiced that one to perfection. But I agree with you, for casual use those roller brakes are overkill. A fat man on a granny bike braking at over 1g! Don't the laws of physics apply in Eire these days? Quite so. That comes out at 1.05g. Centre of mass combined with wheelbase tell us that he performed the last 8 feet of that stop flat on his face in the road. But that is a perfectly legitimate way of stopping your bike. Anyone who wants to do the sum the easy way just pop this (30 kph)^2 / (2 * 11 ft) in g What's this nonsense, Don, a wiki written by you and the equally useless Eiron? Didn't they teach you in tech school to use compatible units? You're mixing Imperial and Metric measures hand over orange. Here is a reliable authority on the subject: "The maximum braking force that can be applied to a vehicle through its wheels -- the mass of air having its own retarding force -- is limited by the friction between the tire and the road, and is equal to the weight of the vehicle multiplied by the coefficient of friction. On a dry pavement, this coefficient could be as high as 1; with a coefficient of unity, retardation would be 1g or 32.2ft/s^2 and the stopping distance in feet would be V^2/29.9 where V is the speed in mph. I must stress though that this is on an ideal surface such as does not exist outside a test facility..." (p98, Designing and Building Special Cars, by Andre Jute, Batsford, London 1985) That math is properly and correctly developed elsewhere in this thread, where you can go find it. into Google. I rarely use an other calculator these days. You should learn how and you won't perpetrae further ****ups like in this post. Andre Jute Our legislators managed to criminalize fox-hunting and smoking; when they will get off their collective fat backside and criminalize negative feedback? It is clearly consumed only by thickoes. Google handles mixed units perfectly happily. That is one of its biggest joys. The calculation works BECAUSE I included the units; without them it would have assumed they were dimensionless numbers, and failed. Try it before you condemn through ignorance. While what you quote about the maximum braking force above is all fine and dandy as far as it goes, it ignores the fact that a bike is tall with respect to its wheelbase, and any attempt to approach that maximum will result in it toppling. As I said, at 1g, you will be face down in the road. Eiron actually tried the experiment and found an empirical limit at about 0.35g, and my back-of-an-envelope calculations show him to be pretty much spot on. d -- Pearce Consulting http://www.pearce.uk.com |
Smooth Mover: bicycle with electronic gearchange and adaptive suspension
On Sat, 08 Sep 2007 17:39:11 -0700, Andre Jute
wrote: On Sep 8, 12:42 am, Eiron wrote: Andre Jute wrote: Those brakes aren't dodgy, Don, they're hyper-competent; what I forgot to add is that they have a built-in modulator. They stop the one- eighth of a ton of me and the bike and light touring gear from thirty kph in 11 feet. I know, because I chewed up a pair of tyres while I practiced that one to perfection. But I agree with you, for casual use those roller brakes are overkill. A fat man on a granny bike braking at over 1g! Find the fat on my pic overlooking Dunworly Bay, several places on my bike pages, and I won't put you in hospital when I run into you. You mean an opa bike, not an oma bike (or granny bike as you ignorantly have it). You wouldn't know either if you saw them, sonny. Don't the laws of physics apply in Eire these days? Same as everywhere else. Here is a reliable authority on the subject: "The maximum braking force that can be applied to a vehicle through its wheels -- the mass of air having its own retarding force -- is limited by the friction between the tire and the road, and is equal to the weight of the vehicle multiplied by the coefficient of friction. On a dry pavement, this coefficient could be as high as 1; with a coefficient of unity, retardation would be 1g or 32.2ft/s^2 and the stopping distance in feet would be V^2/29.9 where V is the speed in mph. I must stress though that this is on an ideal surface such as does not exist outside a test facility..." (p98, Designing and Building Special Cars, by Andre Jute, Batsford, London 1985) The math is developed elsewhere, where you can go find it. Go and ask your driver. He will put you straight about braking. d -- Pearce Consulting http://www.pearce.uk.com |
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