New Teres Direct Drive Motor Available as Option

Hi Ketchup. Agreed. I think it is folly to believe cutting lathes have perfect speed stability. I came across this site where the sell cutting lathes. http://www.vinylrecorder.com/index-e.html. One of the tweaks they offer is a 3.8 kg platter to reduce wow and flutter.

I guess like everything else in life, not all cutting lathes are equal. Some would undoubtedly have less stability that others.

Lewn, my bad – I do not mean to be combative. I understand your point BUT nobody can really prove that stylus drag decelerates a platter to soften transients. We accept that as it is based on sound physics and what some folks have heard seem to tie in with that. A cutter slowing down the cutting lathe is based on the same physics. You cannot simply accept the physics for the one and reject the same physics for the other.

Also, I am not saying what I hear is proof that this happens, rather the cutter drag on the cutting lathe goes a long way to explain something I have heard on some of my LP's. I may be totally wrong, but I think physics back this one up.

Regards
Paul

Pauly,

The flywheel effect of the platter on that cutting lathe would be negligible compared to the 75kg/cm torque generated by the motor. From pictures on the net it's evident that a really decent cutting lathe like the Neumann has a much stronger drivetrain. A lathe strong enough to handle the fundamental drag on the cutting tool should be impervious to small modulations in drag. Still, somehow tools never quite seem to be as good as they should be. I have a metal lathe with a 10" chuck & a 2hp motor & I still manage to find jobs that are too big for it.

I did find a reference to pitch problems introduced by stylus drag on lathes used to cut 78rpm records in the 1920s.

"....could have been torn out of my earliest - and current - writings on the subject....."

Occasionally, some of us forget that johnnantais single-handedly invented the idler table. Fortunately, we can rest assured that he'll always be here to remind us of his place high on top of the Mt. Olympus of Turntables.

Chris and all, what is the size and composition of the Verus' O-ring?

I'm already looking forward to lively debates about sonic merit and wear from various O-ring materials (urethane, flourosilicone, polyacylate, etc.).

Anybody wanna buy my tape splicer?

Tim

Tim,

The o-ring Chris supplies is from McMaster Carr, part number 9557K228.

How about a group power buy?! ;-)

Doug