Thanks guys!
Steven - I guess your gearing is what you run with the 6.5 LRP?
Jay - Ironically I had a 24tooth pinion in mind as seemingly being what would work ok, but my 24t pinion is one of the old Losi ones (& I mean REALLY old!) that is about as wide as the RW spur gear & I just can't squeeze it on when the motor is in place - so its currently got a 23 fitted. As I'm not going to run any boost I wonder if my 25 would be OK?
