pic: Delrin Poly Cord Pulleys

[R.C.]

Originally Posted by artdutra04

If you can, go with a much larger OD and use round hollow tube for the roller material.

1.5" diameter x 0.040" to 0.063" wall thickness aluminum tube works great for polycord rollers.

Agreed, in the 1.5" range you can find very nice rubber tubing to slide over the Tube to act as grip as well!

Such as McMaster: http://www.mcmaster.com/#87235K34 (comes in black btw )

We used 1.25 OD X .060 wall. It allowed us to press in a FR8 Bearings. So we drove one roller and made the rest dead/pressed in bearings.

-RC