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05-14-2012, 07:20 PM

#14778

T-BirdJunkie

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Location: Norwood, OH...and CCRCR and The OhioRCFactory

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Quote:

Originally Posted by mhall

Has anyone had problems with their differential thrust bolt breaking? I have now broken two in the last week and I can not figure out why. Please help!! Thanks! Oh, I am running a 17.5t Tekin motor with a Tekin RS ESC. Gearing is 72t spur gear with a 31t pinion.

Quote:

Originally Posted by LOSIRACER77

HOLY-S417!!!!! U THE MAN !!!!!!!!
THAT PUZZLES MY MIND, WHAT IS LEFT AFTER YRS OF S3X DRUGS AN BEER!!!!

WHERE IS IT BREAKING AT?

Quote:

Originally Posted by mhall

I don't think it's from tightening the bolt, but I will check the washer and see what I find.

Quote:

Originally Posted by J_Bone

Replace them every rebuild or every other and you should be good. Make sure you buy both new bolt and washer.
http://miponline.com/store/mip09151.html
http://miponline.com/store/mip09135.html
I have 2 rebuilds on mine and I haven't broken one yet. I did just replace the bolt and washer since the washer had groves in both sides.

The screw is breaking right at the bottom of the head. ThunderbirdJunkie's been going through a diff screw every race weekend or two...four have broken so far. It looks like there's a bubble underneath the head that developed during casting, presuming that's how these screws are made. He's been running AE cars for a long time and never had this happen, so it's probably just a bad run of them...but it sucks. Gonna try running the diff a bit looser, but ThunderbirdJunkie honestly doesn't believe this will help.

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