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Choosing the right differental oil

Choosing the right differental oil

Old 06-05-2007, 05:11 AM
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Default Choosing the right differental oil

I own a HPI R40 and have 4 geared differentials on the front and back.

In theory, what would be a good default setup for the oils?

I currently have 5,000K in the front and 50,000k in the back. I am rather unsure how the different oil weights work together and how it ties into understeer (push) and oversteer (loose).

Can anyone please explain to me how it works?
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Old 06-05-2007, 02:58 PM
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heavier diff oil = more friction on diff gears = diff closer to being a spool (solid axle)

not sure how it affects understeer or oversteer though, but i have a feeling that the heavier the fluid, the less power you lose during cornering but the more understeer you gain (just a guess)
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Old 06-06-2007, 06:03 PM
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A good starting point is 10,000 in the rear.and 30,000 in front.the loser the track the lighter oil you should use.(not writen in stone)many variables,setup makes a difference.but this is a good starting point.
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