Just to revisit this thread, thanks for all the advice guys. Ran the car on grass a couple of weeks ago, all was good, although i still felt like i was i little low on rear end traction.
So, i've rebuild the ball diff with b-fast balls and rings, and refitted. I've also done the high rear wing mod.
My (not so) scientific test was to run the car in front of my workshop which is covered in shingle. With the gear diff it would break traction, mainly when the turbo came in, but would just rotate. I've fitted the ball diff and ran it again today on the same surface and its 1000 times better! it now pulls straight if it tries to kick out.
Not sure how much the wing mod helps? But the diff is certainly waaaay better. Im not convinced that its because its the ball instead of gear diff, but more that i was running too thin gear oil in it....
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Yokomo. Nemo Racing
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