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  1. #1
    RC Competitor
    Join Date
    Oct 2018
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    CA
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    85

    VXL strange sound.. something slipping?

    All of a sudden, I'm not able to go fast anymore. It makes an unusual sound. I checked the slipper. No issue there. Have you ever experienced this, if so, what could it be?

    Thank you for the insight.

    Bandit issues https://imgur.com/a/MHbSb2P


    This video is full throttle, as you can see, it's not going anywhere.

    Sent from my GM1915 using Tapatalk

  2. #2
    RC Racer
    Join Date
    Aug 2020
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    Kansas City
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    129
    Do you have any videos with sound? Have you checked all of the gears for alignment and missing teeth, starting with the spur and pinion?

  3. #3
    RC Competitor
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    Quote Originally Posted by Spechal View Post
    Do you have any videos with sound? Have you checked all of the gears for alignment and missing teeth, starting with the spur and pinion?
    Hello, in the video I attached in my original post, you could hear the sound by clicking unmute in the top right corner. No missing teeth, gears are aligned.

    Sent from my GM1915 using Tapatalk

  4. #4
    RC Turnbuckle Jr.
    Join Date
    Oct 2016
    Posts
    4,809
    Thatís the slipper clutch. 100%. Itís loose and may be too worn. Try tightening the nut.


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  5. #5
    RC Champion
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    Jun 2003
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    If it’s not the slipper, it might be the top shaft roll pin, which can break with too much power and grip and not enough slip in the clutch all at once. Here’s the part in question, if that’s the problem.


    https://traxxas.com/products/parts/3793

    For a while I was having a problem on my Pede where the shaft was sliding back and forth in the gear, causing that roll pin to come out of the slots in gear and do that. I ended up shimming the shaft and gear on the pin side bearing. I’ve put the correct gear and washers below as well, just in case.

    Gear https://traxxas.com/products/parts/2794
    5x8 washers https://traxxas.com/products/parts/1985
    5x11 washers https://traxxas.com/products/parts/1685

    I’d still look over the slipper first, those can wear and/or glaze up and slip. I just freshened the slipper on my Stampede since the plate and pads were probably the same ones I installed in ‘07 when the VXL trans parts became available (bought the truck 2nd hand in ‘99) and has seen everything from brushed power with 7.2v to VXL-3s brushless power on 3s over the last 13 years.

    Here’s what came off the truck for the last time last weekend.


    We’ve replaced brake rotors on our 1:1 cars and trucks that had less wear on them than that plate does
    Last edited by bjoehandley; 09-26-2020 at 04:31 PM.
    https://www.instagram.com/greenjeep1998/?hl=en

  6. #6
    RC Competitor
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    Quote Originally Posted by Gripdog7205 View Post
    Thatís the slipper clutch. 100%. Itís loose and may be too worn. Try tightening the nut.


    Sent from my iPhone using Tapatalk
    It's very tight.

    Sent from my GM1915 using Tapatalk

  7. #7
    RC Turnbuckle Jr.
    Join Date
    Oct 2016
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    4,809
    Quote Originally Posted by CountOmar63 View Post
    It's very tight.

    Sent from my GM1915 using Tapatalk
    Then the pads are shot. Thatís the sound.


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  8. #8
    RC Champion
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    Jun 2003
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    Try to pull it apart to see if it looks like mine Did, but before taking things apart, hold the spur still while pushing it on a high grip surface. If all the parts in the slipper stay still, but the tires still turn, then it’s the roll pin broke or the top shaft has moved and the roll pin disengaged from slots in the gear. If you see the slipper plate on the pressure plate ( the cast piece that the slipper plate sits on and engages with the top shaft outside of the case) move with the tires, you may need to replace the same parts I did last weekend.

    Since I forgot to post that kit earlier, here that slipper rebuild kit.
    https://traxxas.com/products/parts/5552X
    https://www.instagram.com/greenjeep1998/?hl=en

  9. #9
    RC Competitor
    Join Date
    Oct 2018
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    CA
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    Unfortunately none of your guys' solutions helped. Thanks for the effort though

    Sent from my GM1915 using Tapatalk

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