Spring pretension to weight relationship?

[Icefishr]

hey i was wondering if anyone could explain the relationship between the pretension on the primary clutch spring and the amount of weight you can run to get a certain amount of RPMs or faster engagement.

I know in my sled it is runnin an aftermarket primary spring and it seems that the previous owner was running more weight with it than the charts reccomend with stock spring.

I have a solid yellow spring that i believe is polaris make in the primary, stock secondary and helix. the weights i have for the mountains are 58g weights.

should this setup work for 9000-11000 ft? or what would the aftermarket spring do for my clutching?

 

[2XM3]

Order Aaens clutching book, read it like 4 times and all questions will be answered, best 30 bucks you will ever spend...

Simple version, primary spring preload sets enguagement rpm, total pressure regulates shiftout point, weights control max rpm and shift curve.

More preload = higher enguage RPM, lighter weights = more total rpm i'd check the gearing as well, try a 19/42 to start

 

[Icefishr]

Awesome thanks. i will have to check that book out. im interested now in how this all works and how i can manipulate it to adjust the performance of my sled.

i appreciate the help!

Alex