Originally Posted by
kylejtuck
Hello I have a HPI wheely king with a castle brush less system and 2s lipo. I have bought the rc4wd metal gear kit for the gear box but was recommended not to use the metal spur gear. so i have been using the plastic 6990 spur gear that come stock on it. I have went through a couple and was wondering if there were any recommendations for a different spur gear or different gear ratio. The pinion gear i have on the motor is a 6928 48 pitch 28T gear. any recommendations would help
What motor are you running?
Originally Posted by
RustyUs
I'm sure you took HPI's (manual) advice on getting proper gear mesh?
Check bearings on drive shaft?
Picture from HPI's manual attached.
Besides checking the bearings, make sure to use a good steel pinion gear.