Up testing still some problems

[vollender]

I am testing today. I have gotten bog pretty good. But now my pipes are rpm out. I have tried town to a 3-2 twist 50. and still rpmd out. the 3-3 worked best but rpm went to high. I have a 48-40 helix. what is the next step to keep rpm down.

Thanks Ray

 

[rj21]

Add to the tip of your weights, use a lower top rate primary spring, there are so many variables I don't have, sled type, engine size, stock or mod parts, weight of driver with all race gear on, clutch weight profile, carb parts, etc. sorry, don't mean to get picky, but all this counts.

 

[Kaw550]

keep the secondary tight to hold the belt, add more weight to bring the rpms down, how many rpms are you turning, what sled is this??