One thing that has always confused me though is why you should run a ball diff on low traction surfaces? You could run a gear diff with shock oil if if you wanted to to get loads of grip but with a ball diff you have to have it pretty tight to stop it slipping.
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Durango, Novarossi, Losi, Sanwa, Savox, AKA, Optifuel, Tamiya, Kyosho and lots of mods
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