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How was the gear diff of vintage pan car adjusted?
Posted: Wed Dec 19, 2012 10:55 pm
by polarbear
Before the ball diff era (RC300BD, CK800SJ, Serpent MK3), was there any design or tech to adjust the gear diff , (say AMP, PB, SG etc)on 1/8 pan cars??
There was no super thick silicone oil then??
Re: How was the gear diff of vintage pan car adjusted?
Posted: Thu Dec 20, 2012 3:48 am
by Lonestar
You could always use non-silicone mechanical grease, there's some thick stuff out there. But given the tire quality bitd I kind of suspect people were looking for a free diff rather than a stiff one
Some of the conical-gear diffs had a setscrew to adjust the "pressure" of the planetary gears that would actually "bind" the diff. A bit anti-mechanical, but it worked. I know this technique was still used in the early 90's on some 8th scale offroaders too, but it has disappeared since then afaik
Paul