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  1. #1
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    Help with transmission

    Hi all!! What would cause this problem? The gears seem to turn fine but the car will just not go. Thanks for any help. This is an older Nitro Sport, bought new in 2001-02 ish. Thanks for any help. VOLUME WARNING!!


  2. #2
    Marshal Double G's Avatar
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    How's the slipper? Do you have the pegs in the spur gear?
    The Super Derecho

  3. #3
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    Hi, thanks for the reply. This is an older model. I don't think it has the slipper clutch. There is no spring behind the nut on the spur gear.
    Last edited by shanelintc; 05-11-2014 at 02:00 PM.

  4. #4
    RC Turnbuckle Jr. mike-susieq1's Avatar
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    Idler gear inside tranny case might be stripped. Common problem too being plastic.
    DEU 8:18 ESV

  5. #5
    RC Racer
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    idler gear ,get one for the nitro slash ,its a metal one and its like a dollar more than the plastic one.

  6. #6
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    Quote Originally Posted by shanelintc View Post
    Hi, thanks for the reply. This is an older model. I don't think it has the slipper clutch. There is no spring behind the nut on the spur gear.
    it has a weird clutch on the spur. Remove the nut and make sure the disk didnt spin a groove in the slipper. Maybe even check the clutchbell. I tore so many things down to realise I overlooked a simpl we easy fix!
    Last edited by Chubaka; 05-11-2014 at 10:05 PM.
    People Eating Tasty Animals

  7. #7
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    Wow!! Thanks for all the replies and advice!! I am going to start the tear-down in just a few minutes. I 'll post back what I find. Thanks again!!

    There is what looks like string wrapped around the left rear axle. Between the wheel and the bushing. Hmmm.

    Will be uploading poics to Dropbox

    https://www.dropbox.com/sh/sz274sejr...WfPeRpMTjBb8sa

    Just noticed a cracked output yolk
    Last edited by Double G; 05-12-2014 at 10:29 AM. Reason: merge

  8. #8
    Marshal Double G's Avatar
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    Flip the spur and take a picture. I do not believe those screws should be there.

    http://traxxas.com/explodedviews/Nit...ssion-Assembly

    Plus, you should fill all the holes with pegs.

    Looked at the exploded views again, and it appears that is correct as it may be a model not originally equipped with a slipper. If that is the case, then the damage is internal.
    Last edited by Double G; 05-12-2014 at 10:34 AM.
    The Super Derecho

  9. #9
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    Got the transmission off. I feel the need to give the case a real good cleaning before I disassemble it, though. Any suggestions on the best way to clean it?

    Hmmm, the idler looks in really good shape. All the teeth are sharp and it shows no damage.

    Differential gears all look good and operates smoothly

    I guess I will put it back together and see what happens.
    Last edited by cooleocool; 05-12-2014 at 03:16 PM. Reason: merge

  10. #10
    Traxxas Marshal cooleocool's Avatar
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    I bet removing the string will do the trick. From what I can tell, your transmission appears to be functioning properly and there are no clicking sounds indicating that something is stripped. It simply looks like something is causing a lot of drag, and a string tightly wrapped around something in the drive train could certainly cause that.

    As for cleaning the transmission case, I just use paper towel, cue-tips, and a multipurpose cleaner (usually some sort of Windex that I stole from under my kitchen sink--don't tell my wife!).

    Good luck!
    "Happiness depends upon ourselves." -Aristotle

  11. #11
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    Cleaned everything up real good and reassembled the rear end. Took it out and ran 4 tanks through it and it ran like a champ. Thanks for all the suggestions and advice!!

  12. #12
    Traxxas Marshal cooleocool's Avatar
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    That's great news! Have fun!
    "Happiness depends upon ourselves." -Aristotle

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