RE: "do the driven and non-driven sides of a film belt have essentially the same tension?" ...

Posted by andyr (M) on August 1, 2015 at 02:48:23

In Reply to: The Mechanics of Belt Creep posted by GGA on July 31, 2015 at 12:42:20:

AIUI, no they don't. (Weeell, it depends what you mean by 'tension'! ;-)) )

The belt goes round the motor pulley and the platter (or sub-platter in the case of LP12s). So the part of the belt that hasn't reached the platter yet ... is under compression - whereas the part of the belt which is after the platter is under tension.

This tension/compression is like a caterpillar moving along a leaf - and it generates belt creep ... I assume the amount of creep is related to the speed of the pulley or the platter?

The motor speed controller which I am using has the ability to power 2 motors - and to make this to work, it needs to deliver the ability to vary the phase difference between the 2 motors. IE. to synchronise the 'creep' cycles!

I have assembled the parts needed to set up a 2nd motor on my TT but I haven't finished implementing this yet. So I can't report yet, on whether 2 motors provides better SQ! :-))

Andy

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Follow Ups Full Thread

Topic - The Mechanics of Belt Creep - GGA 12:42:20 07/31/15 (16)

RE: The Mechanics of Belt Creep - pictureguy 19:57:47 08/09/15 (2)

RE: The Mechanics of Belt Creep - Not Yet There 08:11:49 08/10/15 (1)

RE: The Mechanics of Belt Creep - pictureguy 09:21:33 08/10/15 (0)

Far more concerned about the belt creep around my waist. nt - jdaniel@jps.net 19:36:45 08/09/15 (0)

Not at odds - Mark Kelly 03:32:03 08/03/15 (1)

You explained this here a few years ago - it was brilliant! - B.K. 17:24:06 08/05/15 (0)

RE: "do the driven and non-driven sides of a film belt have essentially the same tension?" ... - andyr 02:48:23 08/01/15 (0)

RE: The Mechanics of Belt Creep - mosin 14:57:38 07/31/15 (8)

I've wondered about fabric-based belts... - Bry 08:39:31 08/01/15 (1)

RE: I've wondered about fabric-based belts... - unclestu 14:08:55 08/01/15 (0)

RE: The Mechanics of Belt Creep - GGA 15:34:01 07/31/15 (4)

RE: The Mechanics of Belt Creep - B.K. 19:29:58 08/09/15 (0)

RE: The Mechanics of Belt Creep - Lakeshore Larry 05:56:43 08/01/15 (0)

"8/20/2017. One good..." 2017? Wow, I must have really over-slept this morning!! )MT( - J. S. Bach 21:10:16 07/31/15 (1)

Mark is so smart,... - Lew 08:30:48 08/01/15 (0)

RE: Belt Creep - unclestu 15:30:34 07/31/15 (0)

Follow Ups

RE: "do the driven and non-driven sides of a film belt have essentially the same tension?" ... - andyr 02:48:23 08/01/15 (0)

RE: "do the driven and non-driven sides of a film belt have essentially the same tension?" ...

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