Originally Posted by
celt
Fenix gear differential on the way from the good folks at CRC...so stoked to try it!
I have had the diff for a while, (5 months). It works great but with the lower HP of the WGT-R car it isn't as significant a help as it is in a F1 car. Really reduces your maintenance though. One kicker, the threads for the wheel on the diff side were 3mm on mine. The head of a 3mm shcs is larger than a 4-40 and will not go into the counter bore on the crc wheel. I took a set of 3mm shcs and ground them down with my Dremel and belt sander.
Do not try and run diff fluid in these as they are not sealed. A film of medium to thick grease on the side gears is all you need. Building resistance in the diff reduces the cars ability to rotate in the corner. All of my racing is on carpet. If you are setting it up for asphalt the game is different.