Quote:
Originally Posted by brushlessboy16
What causes the diffs to fail, are the gears themselves weak or is it something else?
what about a rear spool?
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The cup is plastic as is the case. This allows for flex and then the gears strip. The ring gear screws are too small. At a minimum get an aluminum diff cup, the modified ring gear with 3 mm screws and an aluminum diff case. This at least theorecticly corrects the flaws of the 3906 diff.
...or you could spool it.