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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.
 

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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.
 

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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..
 

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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.
 
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