Outrunner to diff in SCX10

[TexasSP]

Tire size 4.2-4.5 inches depending on what I go with. Diff ratio is different for front and rear since front is over driven. 36/14 front and 38/13 rear. It can go faster, and I can do 3-6s as I have the packs for that. Already have the pro which is why I am going with it.

[jhautz]

If the front and rear dif ratios are different you are gonna need to keep the center dif somewhere in the equation. Replacing the center dif with the solid center shaft of an outrunner you are gonna be scrubbing tires just to drive straight. The reason that an overdriven front dif works is because the center diff absorbs the ratio difference.

I have nothing to add to the outrunner side of things sorry. But just to clarify for jhautz, crawlers run no true 'diffs'. I.E if you move one tire every other tire moves exactly the same amount. The overdrive is used to help torque twist, steering and having the front pull a little keeps the wheels on the ground in steep climbs. At such low speeds in crawlers you don't notice the tire scrub side of things anyway.

Cheers
Kieren