30 series driven clutch...tightening.

[ForceFed86]

So my driven pulley seems to engage way to quickly. I tried installation on the third hole... even drilled a 4th! I spin around 7k. Looming down at my pulley it seems to me fully actuated by 3500 or so.

Im racing mini bikes to 300ft. So id like to keep it higher gear longer. I ordered a yellow spring to try. But was curious what others have done.

Seems like when I install the sheaves and rotate counter clocl wise 1 "valley" the spring is essentially unwinding to greater degree. Shouldnt the spring tighten? Ie get smaller around the shaft? Wondering if i have the spring in back wards. It appears to be preloaded against the stop....just seems back wards to me.

 

[Brianator]

Yes it should tighten and get smaller in diameter, the cam looks like it sitting on the right stop(s) also... maybe you have a reverse wound spring? Out of curiosity what's your gear ratio and the outer diameter of your rear tire?

 

[ForceFed86]

When I go counter clockwise the spring gets larger... tho it is difficult to do and ors preload it against the lug. Maybe the spring is upside down. Ill play with it tom. 80t 15" tire.

Thanks!

 

[Brianator]

And the front sprocket? Are you turning the cam or the pulley CCW? Either way make sure the spring is tightening then giver a go and see what happens

 

[karl]

And the front sprocket? Are you turning the cam or the pulley CCW? Either way make sure the spring is tightening then giver a go and see what happens

Yup, it should be difficult to assemble, and when together, should snap back to resting position , if its mushy, no good.

When twisting the driven open, the spring should get tighter.

 

[ForceFed86]

There is def a bunch of tension on the lug. Not essy to rotste when assembled. And yes, its a pain to get together! But in my mind the spring should be wrapping tighter against the center hub. Hard to explain. Ill pull it now and try flipping the spring. Thanks all!

 

[ForceFed86]

See if i set it up to preload the spring so it tightens around the shaft, Its on the wrong side of the lug?

So reverse winding the spring would be the only way to get it to preload against the fwd side of the lug?

Its like the spring i have is wound backwards...

 

[Brianator]

Just roll with it and see what happens! It should still open, I'd start in the original middle hole (#2) and play around from there. I'm going to look at mine and compare to yours, be back in a few

 

[Brianator]

So yours LOOKS like it's all going the same way and set up the same as mine, heres a pic for reference where you can clearly see which way the spring is wound.

 

[ForceFed86]

It works, just wanting it to tighten up and work at a later rpm. Thanks! I think i must have a wimpy spring. The yellow firm spring is on order.

 

[Brianator]

Still waiting to hear your front sprocket size to calculate gear ratio, if its TOO low that could be part of the issue you're having

 

[ForceFed86]

Ha! Im not crazy! Pulled out my old 20 series with a red spring. Its wound the opposite way! What the ****!

 

[ForceFed86]

Sry its the 12t up front. 80 in rear. 15" tire.

 

[Brianator]

Well heck look at that! Lol. I'm far from an expert on these so hopefully someone else will chime in but I THINK it'll still work the same with a reverse wound spring and the cam outboard, someone please correct me if I'm wrong! Gear ratio (6.66:1) is great for a 15" tire.