Originally Posted by
fredswain
I started playing with the FGX and so far I'm not impressed with the Chinese quality of it. It's got a long way to go before I get it out on the track. First things first, the diff. I tried the ball diff. It's junk pure and simple. It feels like a pepper grinder. It's either too loose or too tight with no middle balance and horribly rough no matter what. I'm tempted to take it apart and rebuild it but I'm not sure if it's worth the effort. I built the gear diff last night. It's just the gear equivalent of it's ball diff pos cousin. I have no oil in it and it doesn't turn very freely due to the o-ring tightness. I'm sure this loosens up after running a bit though but so far I don't see a usable diff in unmodified stock form.
So what's the trick? Are you guys taking these things apart to tweak them or is everyone just content with running pure junk for a diff?
Fred,
I dont know of any serious racer who simply puts a factory assembled ball diff in their car without first rebuilding it and checking the diff plates etc.
As for the gear diff, did you raed the article on the 3 Racing website on how to build the gear diff. Did you grease the O rings before putting them in? All gear diffs drag on the Orings ... they have to otherwise the oil will leak out