[MBrennan]

What formula do you use to caculate your gears to find out what your max mph should be. My stock gears are 18/40, and now with reverse I have 19/40. Trying to figure out how many mph i will be losing.

 

[spazr]

Sorry i dont have the formula, but 19-40 is stock gearing. 18-40 would lower your top end but give better hole shot . Im surprised the F5 is pulling such good top end numbers with that darn green secondary. Im sure when D&D or Dakota comes out with a clutch kit we will see more consistant top end numbers.

 

[Hermanator2]

i just put the 20/40 gears in my F5... i havent had time to see what kind of changes it made... i know i will need to adjust my clutching..

 

[morrisond]

There should be about a 5 mph difference from the 18/40 to 19/40 with 18/40 have less top end.

 

[sledder]

Hey hermanator, if you cant get the right rpm's or your clutches aren't going into overdrive then try a flatter helix(lower #) or a dual angle helix.