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  1. #1
    RC Enthusiast
    Join Date
    Jan 2006
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    Omaha, NE
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    41

    Belt hitting motor

    I just put my 27 motor in my 4-tec and i noticed the belt ir sitting on the motor and is rubbing on it. Is this bad or not a problem?
    I dont really see how to fix it since i have to sit the motor up that high to reach the gear.

  2. #2
    RC Turnbuckle Jr. razer's Avatar
    Join Date
    Oct 2002
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    Streetsboro, Ohio
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    15,087
    I wouldn't consider it a problem, but it is adding friction to the drivetrain. I used bigger spur gears so that I could also use bigger pinions & move the motor away from the belt.

  3. #3
    RC Competitor
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    Feb 2003
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    Portsmouth, Ohio.
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    76
    I've had several motors rub the belt. You could solve the problem by adding a different pinion gear. But that's entirely up to you.
    Current labor of love.
    Traxxas Summit 1/16 VXL

  4. #4
    RC poster
    Join Date
    May 2007
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    9
    Sorry to dig up an old thread, but I am having the same problem with the belt hitting the motor. I was just wondering how large a spur gear you needed to go up to in order to get the belt off the motor? Thanks.

    Ron

  5. #5
    RC Qualifier
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    Feb 2007
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    louisiana
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    449
    just adjust the motor,with the 2 screws that hold the motor in

  6. #6
    RC Qualifier
    Join Date
    Apr 2002
    Location
    Salinas,California
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    516
    Or, you could put a peice of teflon tape on the motor can.
    'Pede 7700Kv
    4-Tec 5700Kv
    Powered by Mamba Max

  7. #7
    RC poster
    Join Date
    May 2007
    Posts
    9
    Quote Originally Posted by 4tecowner
    just adjust the motor,with the 2 screws that hold the motor in
    I would, but the motor is adjusted as far as it can go. I found out from another board member that I can just use a larger spur gear (93-tooth or 96-tooth) to fix the problem. Have one on order now along with a new pinion to keep the gear ratio correct.

  8. #8
    RC poster
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    Sep 2006
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    Plattsburgh, New York (way upstate)
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    19
    I just installed a brushless system in mine and I'm trying to find the most efficient gearing set-up as well. I'm finding with the 96T spur I'm limited to using a 24T pinion or less. I'm thinking that a better way to go about this is to go with a mid-range spur gear which will allow for more adjustability with my pinion gears. I'm sure this isn't an original idea

  9. #9
    RC Competitor
    Join Date
    Feb 2003
    Location
    Portsmouth, Ohio.
    Posts
    76
    It's been a while since I've tinkered with my 'Tec. I cannot recall what I changed my gear ratio to. When I get home I'll check the ratio and post.
    Current labor of love.
    Traxxas Summit 1/16 VXL

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