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Old 02-13-2010, 09:52 AM   #1
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Default Ball diff tightness with a gear diff?

Hi guys, I recently bought a simple rtr car for our hobby class, and wanted to know which weight oil should I put in to diffs. They are gear differentials both front and rear, and they have no resistance.

I want to put in a diff oil so it can be tight enough like a ball diff, but I dont know where should I start.
The diffs are pretty small, so small amount of oil will be needed.
I dont care about front diff being too tight, most of the guys use solid axle afterall, but having a very tight rear diff can lead to serious oversteering problem at our track.

So, where should I start for the rear diff? 500-2000-10000-30000...?

Thanks for any replies and advises.
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Old 02-13-2010, 11:02 PM   #2
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Unless it's sealed the oil won't last-If its an open gear diff(no seals)grease will work better.I had an old Kyosho TC w/gear diffs and used red axle grease in the rear and 20000 oil in the front (to give it a spool feel).
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