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Dial-in your diffs for peak cornering performance

Three-differential drivetrains are more popular than ever. Once used exclusively by 1/8-scale buggies, rugged gear-diff systems have trickled down to 4X4 short-course trucks and other 1/10-scale machines. In addition to coping better with high power output, the ability to tune diff action by changing the viscosity of the fluid inside is a valuable tuning aid. How can you exploit it to tailor traction and turn faster laps? Here’s what you need to know. Changing the...

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