Originally Posted by Taffyjnr5
Guys,
I have had a look at the 0.8 gear options for the GPX-4 and can't seem to get the right combo and rules of thumb for the split and do any other 0.8 gears fit the GPX-4 like Mugen,K factory,Kyosho etc. I run a small medium grip twisty tight track with 65m main straight.
Taffyjnr5
You can start off with 21/27 pinion and 60/54. If you want more top speed and maintain the low end change your spur gears to 59/53. I think the 6 tooth max split is a rule of thumb due to ratio to maintain a smooth and effective transition from 1st to 2nd gear. As for your other question about do other gears fit, I personally run both GPX4 and Mugen gears, as well as 1st and 2nd gear housings with no problems.