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Thread: Cooters tip... just the tip

  1. #1
    Senior Member Cooter's Avatar
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    Cooters tip... just the tip

    Bought a bike that came with a Hawk exhaust. Its a fine enough unit and I'll keep it for now but I just couldn't stand the tiny thin exits and (IMO) bubblegum welds. I don't mean to talk trash, I'm sure theres plenty of Hawk fans around and I think it would hold together, but I'm just not happy with mine

    Off they go! I hope you appreciate the action shot, I was by myself.
    F4BE1325-E6D4-4174-B9BE-4BDE610A8FCA.jpg

    That didn't really work cleanly enough so the porta-band got the call
    1BB46FCE-CCDB-45A3-A6E2-4D3253822204.jpg

    Look Ma. Nothing. I do like the valve still in there. We'll see...
    3123C371-D336-45AC-BFAE-34C8CBC3E48D.jpg

    shudder
    6CCF8B9C-8661-4625-89C9-96D4E5E832BC.jpg

  2. #2
    Senior Member Cooter's Avatar
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    So. What to put there. Hmm. Something shiney!
    BE38942C-6C5D-4A85-AD06-854528BF8D3D.jpg

    Making one is easy. Making a second one, by hand, that matches is a little harder. Mark and cut a little big:
    8BBCA97F-5BDF-4387-94A1-7FDD4B27B2FB.jpg

    Trust your eyeballs
    E162FF90-4C70-4388-9E2A-6A2767C33F5E.jpg

    Flatten to the same:
    65E66BED-4CE1-460D-8D15-EC76C3BF5D28.jpg

    creep up on it and keep checking:
    E6D528C7-EEAB-4E7C-85AB-9EFE5A5BB23C.jpg

  3. #3
    Senior Member Cooter's Avatar
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    Do a wire wheel 'polish' while you still have some material to hold on too:
    D0FE26CC-AA2E-4D45-84FE-87F7C1389158.jpg

    and cut to length.
    03EC2F72-989C-4A32-A471-7ED43005A0C2.jpg

    Now what to do with them crooked fugly holes? I could have ground them all the way with a carbide tip, but cheated for time a little with the Plazma cutter. My favorite tool! (behind a hammer of course).
    EAE30E00-D3F5-4E94-B4B6-30150607DC78.jpg

    and after marking mostly symmetrical circles, used the bit for a smooth edge.
    54F6F160-3A30-4B78-A076-F44928823E4B.jpg

  4. #4
    Senior Member Cooter's Avatar
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    Its important to have smooth transitions in exhaust systems, especially at the tip. Not for any performance reasons, but you can get a snappy pop when the exhaust pulses hit it. Think about how fishtails sound on a Harley

    I want this to sound as deep and mellow as I can so I opened the holes up to the new 2.25" tip size.

    Tack
    F63F3DB8-B044-4B51-9B88-39445C05A18F.jpg

    check
    4AA46D98-27C3-49DF-B795-3A43945DBE5D.jpg

    With so many weird angles and shapes, sometimes you just gotta eyeball it.
    87793CDF-9661-45B9-8FC6-292639709409.jpg

    BBQ paint:
    947A8899-B630-4C14-B270-1CD54455CD96.jpg

  5. #5
    Senior Member Cooter's Avatar
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    And ride off into the sunset


    WOW! It has a MUCH deeper tone and a bit louder too. To me it's sounds like a much bigger H-D engine and people totally expect a cruiser to come roaring by, lol.

  6. #6
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    I like those wheel. They look good that color.

  7. #7
    Senior Member Cooter's Avatar
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    Thanks man Had them done the same color as Josephine Dirté.


  8. #8
    Senior Member 34nineteen's Avatar
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    Nice work Scotty Kilmer.



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