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  1. #1
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    Exclamation Spur Wobble Possible Reason

    After replacing my stock spur today with a 90t I noticed the wobble some have been experiencing.

    I began to slowly spin the spur and noticed the bearing was not seated correctly. I removed the spur, bearing and slipper pad plate. I placed the bearing in place until flush on the outside, gently placed the slipper pad plate in place and began to tighten the 3 screws until snug. I then reinstalled the assembly on the shaft, tightened the spring and NO WOBBLE.

    This may not be the "end all-fix all" for the spur gear wobble issue, but it worked for me.

  2. #2
    RC Turnbuckle Jr. Carbonrevo33's Avatar
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    ah, cool. Sounds like a good possible reason on why the wobble is occuring. Let's hope it stays like that.

  3. #3
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    Quote Originally Posted by rugruner
    After replacing my stock spur today with a 90t I noticed the wobble some have been experiencing.

    I began to slowly spin the spur and noticed the bearing was not seated correctly. I removed the spur, bearing and slipper pad plate. I placed the bearing in place until flush on the outside, gently placed the slipper pad plate in place and began to tighten the 3 screws until snug. I then reinstalled the assembly on the shaft, tightened the spring and NO WOBBLE.

    This may not be the "end all-fix all" for the spur gear wobble issue, but it worked for me.
    cool now i know if that happens i know what to do
    Race-bred SSC 4x4
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  4. #4
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    Thanks for sharing! Very interesting. I'll give that a try as mine wobbles but both of my spur gears don't lay completely flat on a flat surface.

    Also, how much do you loosen the nut and spring after fully tightening it for a Velineon System? This is my first time removing the Spur gear and slipper.

  5. #5
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    Quote Originally Posted by Dialed_in
    Thanks for sharing! Very interesting. I'll give that a try as mine wobbles but both of my spur gears don't lay completely flat on a flat surface.

    Also, how much do you loosen the nut and spring after fully tightening it for a Velineon System? This is my first time removing the Spur gear and slipper.
    I do not have a Velineon System, I run a Reedy Challenger 19T Spec on Maxamps 5000mAh 7 cell. I can keep up with my buddies brushless Slash on the track, but a bit slower on the street.

    As for the slipper; I'm always adjusting to suit traction needs.

  6. #6
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    Quote Originally Posted by rugruner
    I do not have a Velineon System, I run a Reedy Challenger 19T Spec on Maxamps 5000mAh 7 cell. I can keep up with my buddies brushless Slash on the track, but a bit slower on the street.

    As for the slipper; I'm always adjusting to suit traction needs.
    Thanks rugruner. I just checked the Slash manual and it said the minimum would be to loosen 1/2 turn and a good starting point would be 1 turn.

  7. #7
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    I really dig these kinds of posts and find them useful for everyone, myself included. I hadn't thought of checking the bearing alignment within the spur - good eye.

    I found another reason for the wobble is that when new, those three slipper pads aren't seated properly. Out of the box, the clutch spring was compressed all the way and I saw a considerable wobble. Backed it off one full turn as advised in the manual, ran a pack and wobble gone.

    Love it when a plan comes together.

    Quote Originally Posted by rugruner
    After replacing my stock spur today with a 90t I noticed the wobble some have been experiencing.

    I began to slowly spin the spur and noticed the bearing was not seated correctly. I removed the spur, bearing and slipper pad plate. I placed the bearing in place until flush on the outside, gently placed the slipper pad plate in place and began to tighten the 3 screws until snug. I then reinstalled the assembly on the shaft, tightened the spring and NO WOBBLE.

    This may not be the "end all-fix all" for the spur gear wobble issue, but it worked for me.

  8. #8
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    Quote Originally Posted by celt
    I really dig these kinds of posts and find them useful for everyone, myself included. I hadn't thought of checking the bearing alignment within the spur - good eye.

    I found another reason for the wobble is that when new, those three slipper pads aren't seated properly. Out of the box, the clutch spring was compressed all the way and I saw a considerable wobble. Backed it off one full turn as advised in the manual, ran a pack and wobble gone.

    Love it when a plan comes together.
    You mentioned about the slipper pads not being seated properly. I brought this up in a thread some time ago.

    I hope this works for those having the wobble problem. I'm just happy I had the eye to notice the culprit.

  9. #9
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    Which brings another question...

    Would it make sense to use a washer between the bearing and the slipper spring with the hopes of providing more even pressure?

    Anyone try this?

    Quote Originally Posted by rugruner
    You mentioned about the slipper pads not being seated properly. I brought this up in a thread some time ago.

    I hope this works for those having the wobble problem. I'm just happy I had the eye to notice the culprit.

  10. #10
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    Quote Originally Posted by celt
    Which brings another question...

    Would it make sense to use a washer between the bearing and the slipper spring with the hopes of providing more even pressure?

    Anyone try this?
    Its funny you bring this up, I was thinking about that last evening. In theory it will work, man.....I need a washer now.

    *NOTE*
    Careful when vocalizing the fact you need a washer, my wife heard me and said "( I've been saying that for 4 months)"

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