Increasing clutch cable transaxle pulley diameter Options

[HalfMoon]

Has anyone ever experimented with increasing the diameter of the transaxle clutch cable pulley?
Obviously the housing would have to be modified that much goes without saying.
My wondering on this idea would be to shorten the "throw" at the pedal with the hope of increasing shift speed (I've converted to a cable shift).
Direct experience with this modification very much sought.

[Mikey914]

Hey guys , just a thought. You are effectively shortening the cable length, so why not just tighten the cable to preload the clutch to the point you desire. Anything you would do would have a diminished rate of return.

[HalfMoon]

Hey guys , just a thought. You are effectively shortening the cable length, so why not just tighten the cable to preload the clutch to the point you desire. Anything you would do would have a diminished rate of return.

True!
I tried this by adding a spacer between the adjuster and the fork rod end but unfortunately, any preload (in this sbc application) was disallowing the clutch to fully disengage thus making for a clutch slip under hard acceleration.
That said, more tinkering (size changes) may yield a result. Would it ultimately shorten the throw? I have doubts it would be noticable.

[Superhawk996]

That said, more tinkering (size changes) may yield a result. Would it ultimately shorten the throw? I have doubts it would be noticable.

I think you're missing the point.

Whether the pulley is 1" in diameter of 2' in diameter the cable movement will remain unaffected. The cable travel is determined by the pedal lever ratio. As BillC and Bdstone914 stated correctly early in this post, you'll need to modify the pedal ratio to affect the cable travel.

I think you're somehow confusing a single wheel pulley which simply changes the direction of the cable with a multi-wheel pulley that is capable of changing mechanical advantage at the espense of travel.

Here is a basic link I'd suggest before tinkering with pulley size which will never yield a result based on the physics involved.

https://www.explainthatstuff.com/pulleys.html

Hopefully this helps.

Another item that needs to be considered is that making the pulley diameter smaller will force a smaller radius on the cable which will increase the strain internal to the steel wires of the cable. In turn, that increased strain will fatigue the cable quicker than if a larger diameter pulley were used.