Revo gearing question

[Overdriven]

A little more info like what motor and voltage youre running would be helpful. Also how fast do you want to go? Going from 68t to 60t is a pretty big change though. To do your own gearing calculations check out BrianG's calculator here: http://scriptasylum.com/rc_speed/_top_speed.html

Sorry about not giving you enough info. I go from 4s to 6s my 4s is running at 5200mah and my 6s is running 5000mah. Its on the brushless revo with the castle motor with the mmm esc.