Further to the "getting back into vinyl" saga....

Now have it sounding great.... but it's playing too fast. Not by much, just
enough to make things sound a tad hurried with accompanying pitch shift.
What on earth could make it play fast?

It's not had a new belt for years, it's been stored unused for 7 years.
Could this be the problem? It's the last thing I can do myself I think
without calling in outside help. If I can find a belt that is!

Any other ideas chaps?

Les

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Les Hemmings a.a #2251 SA

Les Hemmings wrote:
Further to the "getting back into vinyl" saga....

Now have it sounding great.... but it's playing too fast. Not by much, just
enough to make things sound a tad hurried with accompanying pitch shift.
What on earth could make it play fast?

It's not had a new belt for years, it's been stored unused for 7 years.
Could this be the problem? It's the last thing I can do myself I think
without calling in outside help. If I can find a belt that is!

Any other ideas chaps?

Les

Hard to say what could make it go faster, lots of things will make it go
slower....

The 512 has a synchronous motor, so I would expect that if it goes round
at all smoothly, it would go round at the right speed. Having said that,
it could be that the pulley has some grot (technical term, sorry) round
it and that is effectively making the diameter slightly larger, and
hence the speed is fast. You say it's only slightly fast, so that could
be a cause.

Have you put a strobe disc on it, and measured just how fast it is
going? You can download a strobe disc from
http://www.extremephono.com/ftp/50Hz.PDF

From reading the 512 manual,
(http://www.vinylengine.com/library_m...d_model=PL-512)
I don't think there is any speed adjustment on the 512, so the speed has
to be right if the motor is turning normally.

Belt slip will show up as high wow and flutter or of extreme, slow
speed, as will a tight main bearing. I suggest you give the motor
pulley a clean with lighter fuel or isopropyl alcohol, or Wodka if need
be, and check the speed again.

S.

"Serge Auckland"
wrote in message

Les Hemmings wrote:
Further to the "getting back into vinyl" saga....

Now have it sounding great.... but it's playing too
fast. Not by much, just enough to make things sound a
tad hurried with accompanying pitch shift. What on earth
could make it play fast? It's not had a new belt for years, it's been
stored
unused for 7 years. Could this be the problem? It's the
last thing I can do myself I think without calling in
outside help. If I can find a belt that is! Any other ideas chaps?

Have you put a strobe disc on it, and measured just how
fast it is going? You can download a strobe disc from
http://www.extremephono.com/ftp/50Hz.PDF


I note that Les completely skipped over this highly relevant and helpful
suggestion.

Serge Auckland wrote:
Have you put a strobe disc on it, and measured just how fast it is
going? You can download a strobe disc from
http://www.extremephono.com/ftp/50Hz.PDF



Under ac lighting the lines advance slowly in the direction of travel
meaning it's too fast I think... I may try it later with a flourescent tube.
It may give a little more definition than an incandescent bulb. the effect
could still be discerned though..

Les

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Remove Frontal Lobes to reply direct.


"Oh Bother!" said the Borg, "We've assimilated Pooh!"

"That's 10 times I've explained binary to you. I won't tell you a 3rd
time!"


http://armsofmorpheus.blogspot.com/

http://www.richarddawkins.net/index.php


Les Hemmings a.a #2251 SA

On Wed, 17 Jan 2007 17:54:33 -0000, "Les Hemmings"
wrote:

Under ac lighting the lines advance slowly in the direction of travel
meaning it's too fast I think... I may try it later with a flourescent tube.
It may give a little more definition than an incandescent bulb. the effect
could still be discerned though..

Les

Were you serious about Pink Floyd being two frets high? That would be
such a huge error that you wouldn't see movement in the strobe disk at
all - it would be a blur. If you are seeing movement slowly in the
direction of travel, it is going to be close enough that you would
need instruments, not your ears to detect the error. Is there any
chance you are fooling yourself here?

Do you have a musical instrument of any kind that is definitely in
tune. See if you can play along to something modern in a known key.
That'll give you your answer.

d

--
Pearce Consulting
http://www.pearce.uk.com

"Les Hemmings" wrote in message
...
Further to the "getting back into vinyl" saga....

Now have it sounding great.... but it's playing too fast. Not by much,
just enough to make things sound a tad hurried with accompanying pitch
shift. What on earth could make it play fast?

It's not had a new belt for years, it's been stored unused for 7 years.
Could this be the problem? It's the last thing I can do myself I think
without calling in outside help. If I can find a belt that is!

Any other ideas chaps?




How do you know it's fast - what are you using to compare?

As Serge says, there's plenty of things to make a tt run slow, but fast is a
bit unusual..???







Les

--
Remove Frontal Lobes to reply direct.


"Oh Bother!" said the Borg, "We've assimilated Pooh!"

"That's 10 times I've explained binary to you. I won't tell you a 3rd
time!"


http://armsofmorpheus.blogspot.com/

http://www.richarddawkins.net/index.php


Les Hemmings a.a #2251 SA

Keith G wrote:

How do you know it's fast - what are you using to compare?

As Serge says, there's plenty of things to make a tt run slow, but
fast is a bit unusual..???


When Pink Floyd are suddenly two frets up from concert pitch you know
something is wrong...

L


--
Remove Frontal Lobes to reply direct.


"Oh Bother!" said the Borg, "We've assimilated Pooh!"

"That's 10 times I've explained binary to you. I won't tell you a 3rd
time!"


http://armsofmorpheus.blogspot.com/

http://www.richarddawkins.net/index.php


Les Hemmings a.a #2251 SA

"Les Hemmings" wrote in message
...
Further to the "getting back into vinyl" saga....

Now have it sounding great.... but it's playing too fast. Not by much,
just enough to make things sound a tad hurried with accompanying pitch
shift. What on earth could make it play fast?

It's not had a new belt for years, it's been stored unused for 7 years.
Could this be the problem? It's the last thing I can do myself I think
without calling in outside help. If I can find a belt that is!

Any other ideas chaps?


Playing a 33 at 45, but slowly?

--
M Stewart
Milton Keynes, UK




--
Posted via a free Usenet account from http://www.teranews.com

Malcolm Stewart wrote:

It's not had a new belt for years, it's been stored unused for 7
years. Could this be the problem? It's the last thing I can do
myself I think without calling in outside help. If I can find a belt
that is! Any other ideas chaps?


Playing a 33 at 45, but slowly?


Could be... there's a vibration as well, a sort of grindy hum. I thought
it was a 50 hertz hum from the power supply but you can actually feel the
vibration when you touch the deck. Perhaps the belt has shrunk making things
very tight. I will try and work out how to change the belt. I've seen them
on ebay for £6 or so.

Your right though, seeding up is very wierd.... you'd expect an old,
perished belt to slip and give loads of wow and flutter. Not a steady
speeding up. Off to order a new belt, i'll post with the results.

Les



--
Remove Frontal Lobes to reply direct.


"Oh Bother!" said the Borg, "We've assimilated Pooh!"

"That's 10 times I've explained binary to you. I won't tell you a 3rd
time!"


http://armsofmorpheus.blogspot.com/

http://www.richarddawkins.net/index.php


Les Hemmings a.a #2251 SA

In article , Les Hemmings les.front
writes
Malcolm Stewart wrote:

It's not had a new belt for years, it's been stored unused for 7
years. Could this be the problem? It's the last thing I can do
myself I think without calling in outside help. If I can find a belt
that is! Any other ideas chaps?


Playing a 33 at 45, but slowly?


Could be... there's a vibration as well, a sort of grindy hum. I thought
it was a 50 hertz hum from the power supply but you can actually feel the
vibration when you touch the deck. Perhaps the belt has shrunk making things
very tight. I will try and work out how to change the belt. I've seen them
on ebay for £6 or so.

Your right though, seeding up is very wierd.... you'd expect an old,
perished belt to slip and give loads of wow and flutter. Not a steady
speeding up. Off to order a new belt, i'll post with the results.

Les


Possibly muck on the motor pulley making it bigger diameter and
therefore moving the belt faster. Could cause vibration too.
--
Bob