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STRIPPING spur gear when revo shifts to 2nd
- Thread starter brygod69
- Start date
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Again, check your mesh and make sure that the bolts are using either lock nuts or Blue LocTite.
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Are you using a hardened clutchbell? If so, then you'll need to use a hardened spur as well.
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According to your explanation, it instantly strips the spur when it shifts to second.
If that's the case, it's something INSIDE the transmission that locks up while everything is spinning at a high RPM.
It also sounds like it NEVER gets into second because the spur strips instantly. Is that right?
Does it strip a short span of the spur or does it strip all the teeth off it?
If that's the case, it's something INSIDE the transmission that locks up while everything is spinning at a high RPM.
It also sounds like it NEVER gets into second because the spur strips instantly. Is that right?
Does it strip a short span of the spur or does it strip all the teeth off it?
- Thread starter
- #9
yes, pretty much...you can hear it shift then strip. It flattens teeth all around the gear, I took tranny apart but didn't see anything wrong but I don't know much about them. Is it easier to rebuild one or just buy new?
I agree with Rolex... something in the transmission is at play here. However if the spur is stripping all the way around its hard to say the trans is locking up completely. Could something in the trans throw the mesh out of wack when it shifts into second?
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Your title and your problem don't quite match, so I'm going to change the thread title to STRIPPING instead of SLIPPING, and hopefully give it more attention.
Snook Man
Hardcore RCTalk User
It’s possible but… If you haven’t stripped any internal gears its doubtful the tranny is locking up and causing the issue.
Look for a broken/cracked engine mount or even a loose transmission that’s allowing the mesh to move when the shift occurs.
When a tranny locks up at the shift point it usually causes an instant front endo and major gear damage on the inside.
If you disconnect the front/rear center shafts you can test the transmission by blowing compressed air on the spur. You will be able to feel and hear it shift.
If it locks up at the shift, you know it’s internal; if not, look elsewhere.
Look for a broken/cracked engine mount or even a loose transmission that’s allowing the mesh to move when the shift occurs.
When a tranny locks up at the shift point it usually causes an instant front endo and major gear damage on the inside.
If you disconnect the front/rear center shafts you can test the transmission by blowing compressed air on the spur. You will be able to feel and hear it shift.
If it locks up at the shift, you know it’s internal; if not, look elsewhere.