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  1. #1
    RC poster
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    TRX 3.3 Plastic carb destroyed.




    My T-MAXX engine's rpm goes up and down, so i washed carb with alcohol.

    Then, end cap screw thread is melted.

    I bought new one(carb body), but when I tight the screw, same thing happend.

    So i glued them together... ;;;


    Why did traxxas make carb with plastic? Because they are cheap?
    Last edited by MARIO128; 03-20-2013 at 11:22 AM.

  2. #2
    RC Champion
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    By using plastic, they can make precise molds. That means components with closer tolerances than a metal carb. Closer tolerances mean more power.

    You should learn how to tune an engine before bashing the #1 RC car manufacturer on Earth.
    Make it idiot-proof and along comes a better idiot

  3. #3
    RC Qualifier
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    The process is exactly the same regardless of the material used. You make A mold of what you want, then pore in the molten material in and let it cool. Take what ever tool they choose to use, clean it up and there you go a finished product. The cheapest metals will always have tighter tolerances than plastic.

  4. #4
    RC Champion
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    Traxxas uses composite carbs because they don't conduct heat as well as metal.
    Matthew 7:7

  5. #5
    RC Turnbuckle Jr. Wildman4910's Avatar
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    That's what happens when you over tighten metal fasteners in plastic, it doesn't take much to pull the threads out.
    Look out for the tree/crunch!

    LiPo? Naw NITRO!!

  6. #6
    RC Turnbuckle Jr. Nitronaught's Avatar
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    Quote Originally Posted by Wildman4910 View Post
    That's what happens when you over tighten metal fasteners in plastic, it doesn't take much to pull the threads out.
    OVertighten or cross threaded or both... That carb is a high temp composite... If it had anything melted on it, petty sure the piston would be a pile of molten goo as well.

    As far as tolerances are concerned, that is a blanket statement. Tolerances are only as giid as the designer and mfr process. I've seen plenty on both sides to say you can't justify a statement like that either way....
    Robin Williams
    He will be greatly missed...

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