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  1. #1
    RC Turnbuckle Jr. Briber's Avatar
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    Pinion not staying set on motor shaft.

    My pinion is moving towards motor on shaft to where it doesn't engage spur anymore. It tore up last spur now I don't want it to tear up new spur. I'm cranking it down w/loctite. Any suggestions?
    Just need one more rc, then Ill be done...

  2. #2
    RC Qualifier
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    Is the screw on the flat part of the motor shaft?
    Chances make champions!

  3. #3
    RC Racer
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    I was going to suggest a little loctite, maybe put a drop on the shaft too?

  4. #4
    RC Qualifier
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    What kind of tools you using? Thought I was tightening mine as much as possible with my Craftsman allen wrench until I got my MIP set. Got another half a turn or so it on it, hasn't loosened up since.

  5. #5
    RC Turnbuckle Jr. Briber's Avatar
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    I'm using loctite on sets screw but I can definitely try it on shaft.

    Yes it is on flat of motor shaft.

    I'm using my own allen from one of those flip out sets. It fits nice and snug so I'm assuming it's grabbing screw good enough. I was looking in to those I will bite the bullet and order some.

    What do you think about using dremel and making a slight notch for screw to catch on motor shaft. Maybe it just can't handle 3s???
    Just need one more rc, then Ill be done...

  6. #6
    RC Racer
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    I wouldn't be afraid to notch the shaft a smidge. As long as it's not too deep then it will not be a balance problem. I used to do that for my old cars when I didn't have any lock tight.

  7. #7
    RC Turnbuckle Jr. Briber's Avatar
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    Cool I appreciate the input everyone...
    Just need one more rc, then Ill be done...

  8. #8
    RC Qualifier
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    Remove the pinion and make sure your set screw threads smoothly all the way through. Sometimes there is a burr on the inside of the threads that prevents the set screw from threading down tightly on the shaft.

    Blue locktite on the set screw, let it set overnight. Crank the set screw down very tight, tighter than you think you can
    Slash 4x4, E-Revo, Stampede 2wd (3 of them)

  9. #9
    RC Turnbuckle Jr. Briber's Avatar
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    Did it again today, I put a new set screw in it, I'm going to invest in MIP drivers because I tightened it down so much it spiraled the allen wrench and it slipped one time in set screw.
    Just need one more rc, then Ill be done...

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