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Thread: e-cruiser version 2.5 upgrade - build thread

              
   
   
  1. #11
    Senior Member Hugues's Avatar
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    Just to tease you a little, he he,

    i'm gonna delete the pictures after a few hours because it's not final yet, i told you, just to tease,...
    Last edited by Hugues; 23 May 2016 at 1928.
    Regards from Switzerland
    My 2.5 Upgrade Thread

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  3. #12
    Senior Member Hugues's Avatar
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    Quote Originally Posted by Hugues View Post
    ...

    - I have yet to receive the copper filled PLA i bought on kickstarter. When i get it, i need to design and print a heatsink for my motor.

    ...
    I finally received my 3D printing PLA-Copper filament, it contains 87% copper according to supplier.

    So i started to design the heat sink around my AC-20 motor, which i scan, pictures below.

    There will be a standard 1 inch thick square fan in the square opening on the heat sink to push fresh air into the fins.

    I might add some cover across the fins, maybe at mid height, so the air is forced to go at the bottom of the fins and out on the sides, instead of blowing back at the top. Could have been difficult to machine, but with 3d printing it's easy to add complexity.

    What do you guys think ? Any suggestions ? to improve it ? If it works, i might add a similar module under the motor, where i have space. I don't have space on each side of the motor (wheel and batteries).

    Now, before you ask, the filament is meant to be sintered in a kiln at 1'100 C after the part is printed so the PLA is eliminated and the copper sintered. Then you end up with almost pure copper according to supplier. Copper is actually a better conductor than aluminum, so very good for heat sink.

    we'll see how it goes, just experimenting.

    Heat sink AC-20.jpgHeat sink AC-20 cut.jpg
    Regards from Switzerland
    My 2.5 Upgrade Thread

  4. #13
    Senior Member tomdb's Avatar
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    I would say add they heat sink under the motor, cleaner I flow compared to on top. I would look into ducting both the in and outlet air by making some fiberglass ducts using foam. Air management is key If you want to have i on top of the engine behind covers.

  5. #14
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    Hugues, have you seen this product: http://www.rhdjapan.com/arc-cool-fin.html

    Also, I was in a salvage yard the other day and noticed a scrap motor with the same diameter as yours with extruded finned and curved Al segments attached to the outer case with screws. Sorry no pics, and I so far haven't found a source, but they must be out there.

  6. #15
    Senior Member Hugues's Avatar
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    Hey, thanks a lot for the link, looks interesting, and not expensive.

    I will investigate
    Regards from Switzerland
    My 2.5 Upgrade Thread

  7. #16
    Senior Member Hugues's Avatar
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    Hey guys, long time I haven't posted anything.
    Just updating my build thread with the latest look
    bike2020_2.jpg
    bike2020.jpg
    Not sure why the picture is so small, bigger format here:
    https://www.facebook.com/zvexx.motor...type=3&theater
    Last edited by Hugues; 3 Weeks Ago at 0954.
    Regards from Switzerland
    My 2.5 Upgrade Thread

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