HPI Nitro RS4 MT w/ .21 Engine

I own a Nitro RS4 MT, just a little precaution to someone who is looking to convert yours to a .21 engine. you will strip differentials, i have also been having problems with the engine moving away from the spur gear and stripping that, but.... the upsides, there are many!, it goes at least 50 mph with road tires and sounds awsome, acceleration is killer. It has an O.S. engine (don't recall model number off hand) with a duratrax three shoe clutch and duratrax 18t clutch bell. titanium turnbuckels, rear MIP CVD's, a CVEC dual exhaust pipe, and some more, i don't really remember everything i've done to it.

some more problems are handling, it doesn't jump anything very well since the engine and pipe are kinda heavy, but i built it for speed, and thats what it does :bigthumb: i did this mod about 2 or 3 years ago, since then i turned 16 and got a real car, so i'm pretty much out of the hobby and maybe drive it once or twice a year.

i don't really have any new pics of it, though, if anyone is interested i can post old ones with the .21 engine in it, but otherwise....

you can fit shims in the differential to keep them from stripping, as they wear down the tollerances get wider and only the small tip of the teeth on the gears are gripping each other.

hey check out this site from this guy. http://www.kedar.itgo.com