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RC Diff Oil Tuning (Simplified)

EASY – RC Diff Oil Tuning – Front, Center, and Rear Diff – Thick Vs Thin-oil – Most Important to each diff – Pro Tips – Successful Links and more…

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RC front differential adjustment
Front Diff

Red!!! = Most important to (Front Diff)

Thinner oil

  • More off-power steering!!!
  • Less on-power steering.
  • Less forward traction.

Thicker oil

  • Less off-power steering.
  • More on-power steering!!!
  • More forward traction.

Tip #1 Usually thicker is better unless you need more off-power steering. (More for on-power tuning)!!!

RC center diff tuning
Center Diff

Blue!!! = Most important to (Center Diff)

Thinner oil

  • More off-power steering.
  • Less forward traction.
  • More power to the front.
  • Better in bumps.
  • Easier to drive!!!

Thicker oil

  • More on-power steering.
  • More acceleration!!!

Tip #2 Overall thinner oil in the center makes the front end pull the car more. For this, it’s easier to drive on-power but at the cost of overall acceleration. So you want to make it as thick as possible without making the car too hard to drive. (More of an on-power adjustment)!!!

RC Diff Oil Tuning Rear Diff
Rear Diff

Green!!! = Most important to (Rear Diff)

Thinner oil

  • More off-power steering!!!
  • Less on-power steering.
  • Less forward traction.

Thicker oil

  • Less off-power steering!!!
  • More on-power steering.
  • More foward traction.

Tip #3 In this case, you will find thinner oil is better overall by helping the car turn off-power. But if you go too thin the rear-end might spin out off-power and not want to turn on-power. (More of an off-power adjustment)!!!

Tip #4 In most cases, you will want the front differential oil to be thicker than the rear differential oil and your center differential oil to be thickest.

Here is a list of other sites and channels that might be helpful to your quest to build and tune diffs.

escaperc.com – About Differential Oil Setup

liverc.com – Randy Pike’s tips for tuning gear diffs

site.petitrc.com – Gear Diff Tunner

radiocontrolinfo.com – Differential Oil Selection

sodialed.com – differential – RC Setup Guides

radiocontrolinfo.com – Differential Oil Selection – Radio Control Info

teknorc.com – Differentials and Gearing

rctalk.com – What diff oil is best to put in my RC car for both dirt, grass, road

rctech.net – Advice on 1/8 scale diff fluids

rctech.net – Thicker or lighter oil in your center diff and why?

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