platine motor with nylon thread

There will be less transfer of motor vibration the looser the thread is, so looser is better, until it isn't. Too loose you'll lose speed.

"Gonners'"-- Those of you using thread drive might want to try making a belt using 30 lb. test Spyder Wire, braided not monofilament, WITHOUT teflon coating. Tie a single SQUARE knot and bond it with a drop of super glue off the tip of a hat pin. According to the manufacturer it stretches about 3/4 of 1% in length. Unless you have some type of vernier adjustment on the motor's position, or a very steady hand, it may be difficult to optimise the tension on the belt.

$15 will buy the smallest roll available, a ten lifetime supply. Any good sporting goods store will have it

Ken

Ken

I've used monofilament line for a couple of years now and it works very well. I use a very fine light weight line and then double the loop. The liter the line the smaller the knot. Can you tell us the reason for the woven line vs the mono? I have also wondered whether a no stretch line like Spider Wire would transfer more vibrations as compared to a line that has a lot of stretch.

George

Ken,

On the Spider Line website it lists the Spider Wire original braid 125 foot spool for $20 (freshwater or saltwater, superfine). Is this what you are referring to? The Stealth and Ultracast versions are braided but appear to use teflon.

George,

Any woven line will transmit more vibration than a mono type. If the vibration in the drive system is sufficiently high, a lighter, more elastic drive belt will certainly lower the transmitted vibration to the platter. At the same time the belt will act as a spring system as it passes around the drive pulley. It will be under tension as a point on the belt is travelling from the platter to the drive pulley and in a more relaxed state after it goes around the drive pulley and travels toward the platter.

I suppose that if the flywheel effect of the platter is great enough, the spring effect may be minute enough to be unimportant.

In my case I'm driving the platter from 3 flywheels that each weigh as much as the platter itself. I'm looking for as much driving power as possible. The woven texture of the belt not only yields better traction but also enables the super glue to get a better grip on the knot.

Looking at the many different table-drive systems we can see how a designer can use the many variables at his disposal to attain the performance level he is seeking for the price point he's aiming for.

Ken