Anyone come across a tonearm with a single pivot point rather than the
normal four pivot gimbal ? I have a Thorens TD160 Mk II on the bench that
has come in to have the owner's 'soldered with a hot poker' cartridge
connections corrected. It appears not to be the original tonearm that's
fitted, which was a standard fully mounted type according to the user and
service manuals. This arm is a slim black skeleton, and it just seems to
rest on a single spike sticking up from the mounting plate. If it wasn't for
the wires, you'd be able to lift it right off the deck. There is a fishing
line-hung LBC weight on the left, and the tracking counterbalance weight, as
well as being adjustable fore and aft to set the tracking force, is also
mounted eccentrically, so that it can be rotated to negate any off-axis
force, such as from the LBC weight, which would try to rotate the arm about
its long axis.

I have never seen a single bearing arm like this before, and it doesn't have
any name on it at all. Anyone know what it is ?

Arfa