[BRS]

Bought a Cat SX off the RC TV guy Nick to play with whilst my nitro fun is underwater...

I have a Castle Sidewinder brushless combo coming with their CMS5700 motor
can someone advise me on a pinion size please?


When people state i have a So&so 5.5 motor is that 5.5 the motor kv rating does that make this Castle one a 5.7?

Help a thicky

cheers