secondary helix question

[jsenske]

I have a few questions about the effects of the ramp and springs in the secondary and how they effect the rpm and performance. Is a higher number a steeper helix and hat does a steeper angle do, make it harder to shift out. Mine seems like it shifts out too fast. I would just like someone to give me a good explanation on how to get the right helix for my style.

Please help

 

[jsenske]

Somebody has got to have some tips. If the helix angle is more straight up and down dors this put more pinch on a belt vs a more flat angle. Help i need to get tuned. Really hard to get rpm up mid range i have messed with weights and springs in primary what helix would help. Like shape of it i want to understand.

 

[kviper]

A 40* will resist up shift more (quicker backshift) than a 50*. So a 40 will apply more side force on the belt under load than a 50. A driven spring has two factor's, torsional twist and compresion. Both apply side force on the belt to control belt slip and torque sensing.
You generally build a driven clutch to do two thing's, deliver the beck shift you want and control belt slip.
You generally tune shift RPM with primary weight's and primary spring.
So if I am understanding you correctly you want a shallower cam so it will recover RPM quicker when you nail it?