FavreRunner

I have a question about the 4wd on my HPI RS4 18SS+. When I lift it off the ground and gas it, only the front wheels spin. When it kicks into 2nd the rears start spinning. This isnt normal is it? Im a noob.

SMOKESHOW86

iTrader: (2)

Check your rear diff.

FavreRunner

Okay. Thanks. Should I take it apart to see the gears? Is this common problem? Ive only ran this car 4 times in a parking lot.

Roelof

Also check the cups at the end of the the middle schaft, they can come loose

FavreRunner

Looks like the center diff was the problem. Tha set screw that locks the cup joint was loose. Thanks for the tips.

itchy b

iTrader: (2)

Always make sure that you check the set screws and all the screws on your car for that matter.