Here is the deal: went from 15 tooth clutch bell to 17 tooth, so it is 13% more teeth, or 13% faster. Also, went from 60 tooth spur to 56 tooth, so 7 % difference there, or 7 %faster. So is it safe to assume the total difference of gearing now is 13%+7% = 20% faster????
The truck is an Nitro Evader, not that that will matter, the original speed I guessed at 38 MPH, so with 20% more top end speed will it now run 45.6 MPH?
Thanks, Joe

Haven't ran it yet, plan on having some "me" time tomorrow and run it to see if I notice a difference, or to see if it will even move off the line without a push from me with the new gearing.