revo pinion
 

I am converting my revo 3.3 to brushless and want to know what pinion to use, i am a newbie to electric, but not to rc's. I have ordered a feigao 7xl, and i am going to use a mmm v3, and zipp-h lipos ( 5000mah, 5s, 20-30c ). I will lock second gear, and the spur is a 38t. what pinion should i use if im going to race at a medium size track, and want to bash with some buddies. I can order a couple if i need.:mdr:

I'm currently using a 38/17 combo on my converted 3.3.

Did u lock second gear and what is the top speed?

o i also have a question for BrianG hehe how do i attach a fan to the motor, and what is the biggest one i can install on it.

I installed the single speed conversion plate. I have not gps'ed it yet.

In order to get the best runtime out a truck what is the best way to gear it. Is it best to make it so the motor is undergeared, overgeared, or about perfect?

It's best to have it in between. Undergearing and overgearing can be inefficient and can also cause high operating temps.

the feigao will run pretty hot on 5s, I would suggest a 10XL

will that 17/38 gearing about right for my revo then, or will i need a different one. will a 5s 5000 mah 20-30c last longer than the 4s version in my truch?

sorry didnt see your post, i dont want to switch motors i already have the 7xl, i will pob swith it out later though

Feigao 7XL will run hot in a Revo geared that high, you might want to run closer to 15/40, the Neu and Medusa motors have a much better design and will produce less heat

yeah i will prob switch do a nue after awhile, but 15/40 should be perfect for the 7xl , and will make it run as cool as a feigao can?