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  1. #1
    RC poster
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    Apr 2012
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    Broken Spur Gear

    Today I was running my revo 3.3 and my engine revved up really high while applying brake until i squeezed the fuel line and shut it off. I checked the spur gear and it was stripped. Was that the problem or could it also be a broken clutch?

  2. #2
    RC Qualifier
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    Mar 2011
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    Most likely it was due to improper gear mesh - too loose. Go on youtube and watch some video on "how to set nitro gear mesh" with your new spur gear. Some people use a strip of paper to get it right. Or you can do it by feel as well after you get the hang of it.

  3. #3
    RC Racer
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    gear mesh could have changed if you had abit of a stack and knocked/moved your motor..

    or if you pulled the truck down or not and didnt put it back together with correct mesh.


    ... or maybe there was drivetrain shock (landed on the tires at WOT or something), or got bogged down in long grass for example.
    OkGo Performance, RC Division.

  4. #4
    RC poster
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    Thanks for the replies!

  5. #5
    RC poster
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    Oct 2011
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    Hey

    Same thing happened to me once, and my clutch spring got ruined that day so yeah check your clutch bell

  6. #6
    RC Racer
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    Jan 2012
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    It could also be a bent chassis or broken or cracked engine mount.

  7. #7
    RC poster
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    Apr 2012
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    Turned out to be broken clutch shoes. Thanks for the replies!

  8. #8
    RC Champion
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    Slipper could be to tight that is a big one that many people forget about.

  9. #9
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    Quote Originally Posted by 96motorhead View Post
    Slipper could be to tight that is a big one that many people forget about.
    what is slipper and how do you know how tight to put it?

  10. #10
    RC Turnbuckle Jr. fallonguy's Avatar
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    May 2006
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    Quote Originally Posted by jeryd720 View Post
    what is slipper and how do you know how tight to put it?

    The slipper right behind the spur gear. instruction on how to adjust is in the manual page 34 if you have the new revo.
    I wanted to put a really cool signature but I ran

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