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Old 06-14-2010, 03:31 PM   #1
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Default xray 808 diff bearing

Is there any one out there that can help me sole the problem off the diff bearing i can only do one heat with them before they break why is this?
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Old 06-14-2010, 06:07 PM   #2
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1- there already is a thread for Xray


2- if you are only getting one heat from your bearings then you obvoiusly have other issues causing the failure.
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Old 06-14-2010, 11:54 PM   #3
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Default Try this...

Originally Posted by glen hants View Post
Is there any one out there that can help me sole the problem off the diff bearing i can only do one heat with them before they break why is this?
When I was building my 808 for the first time I noticed there was play in the pinion assembly. So I put one medium sized silver shim on the pinion before I install the bearing, the one that touches the three retaining screws closest to the diff. that takes up the slack and reduces the impact on the bearings upon landing off a jump, in addition to closing the gap on the pinion diff contact and keeping the mesh consistent over the long haul. I then put one thin shim in between the bearing and the diff case, the plastic side, not the diff gear side, this prevents the mesh from closing too much. I hope this helps...you should get 4-5 race meets out of those bearings.
Mad Dog drives a Mugen MBX-7, Novarossi engines, Clockwork Racing, Futaba radio, AKA/Proline Tires
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