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Old Jun 21, 2013, 06:36 PM
Why yes, I am an R/C addict!
flyrcehelis's Avatar
About 15 miles from Bristow, OK
Joined May 2009
650 Posts
Help!
Losi XXX-T differential problems

I have a Losi XXX-T I bought a couple years ago and I just now got around to building it. It worked for a while, but I had some problems with the way I had the motor mounted. So now i have fixed that, except now with it won't move, even with the motor and the gears all moving. However, if I lift it off the ground, the wheels spin like they're fine. Is this just a differential problem or is there something else causing it?
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Old Jun 21, 2013, 08:35 PM
Paul Onorato's Avatar
United States, CT, Brookfield
Joined Jun 2013
2,110 Posts
It sounds like the slipper clutch is too loose.
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Old Jun 22, 2013, 03:44 PM
Why yes, I am an R/C addict!
flyrcehelis's Avatar
About 15 miles from Bristow, OK
Joined May 2009
650 Posts
So how would I fix that?
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Old Jun 22, 2013, 03:59 PM
Did you check the FAQ already?
SoloProFan's Avatar
The Netherlands
Joined Jul 2010
13,304 Posts
Tighten the appropriate screw or nut. The manual should have a section about adjusting the slipper clutch properly. If not, there are quite a few tutorials about other cars, which will generally apply to your car as well.
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Old Jun 23, 2013, 10:02 AM
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wparsons's Avatar
Canada, ON, Whitby
Joined Aug 2008
8,919 Posts
It could be that the diff is too loose as well, it's a ball diff and needs some tension to function properly.

The way to test this is to hold one wheel and the spur gear solidly, then try to turn the other wheel. If it turns easily the diff is too loose.
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