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  1. #1
    RC poster
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    Aug 2013
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    Spur gear tips!!

    I have a 1/16 summit with a 2s lipo and my spur gear stripped out the other day and I just wanted to know what would have caused this. Could it be hitting the throttle to hard or little debries getting inside. Im new to this and it real fun but I just want to prevent any types of mishaps that a bad spur gear could cause. Thanks

  2. #2
    RC Turnbuckle Jr. Jimmie Neutron's Avatar
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    Oct 2009
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    There are very few causes to a stripped spur:
    1) Improper mesh
    2) Debris
    3) Too loose of a slipper resulting in a soft center and causing the spur to squish away from the pinion.
    Whatever it is I just said... I could be wrong.

  3. #3
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    Thank you Jimmie Neutron..

  4. #4
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    @Jimmie Neutron

    What exactly do you mean by that third one? If the slipper is too loose wouldn't the spur & pinion just spin together until the slipper engages, so if the mesh was sent properly why would it wear?

    I mean, you're prob right, I just wonder why that would strip out a spur?

  5. #5
    RC Turnbuckle Jr. Jimmie Neutron's Avatar
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    A loose slipper can melt the center of the spur, making it soft and unable to withstand the forces of the pinion against it which it will then be forced to unmesh causing it to strip.

    EDIT:
    Here are some pictures of what I am talking about...

    Last edited by Jimmie Neutron; 09-02-2013 at 10:40 AM.
    Whatever it is I just said... I could be wrong.

  6. #6
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    Wow! I didn't know a spur gear could melt out like that, I guess there's a tremendous amount of heat buildup on a spinning clutch

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