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Thread: Can I drill into the aluminum base of my Curtis 1238R-7601 ?

              
   
   
  1. #1
    Senior Member Hugues's Avatar
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    Can I drill into the aluminum base of my Curtis 1238R-7601 ?

    I would like to screw my heat sink into the aluminum base of my Curtis controller. Anyone knows for sure how deep a hole I can drill ?
    Regards from Switzerland
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    Empulse R #24 frodus's Avatar
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    I'd avoid if at all possible and use the holes that are there.....

    The issue being that there are screws from the other side all along the base where the MOSFETs are as well as circuit board mounting points.

    I guess the worst that could happen is that you break the bit and maybe the die when you tap the hole. You don't need to go that deep if you're just mounting a plate.

    But it see if there's a way to use the 4 holes there if you can't find someone that knows the internal layout.
    Travis

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    Senior Member Hugues's Avatar
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    Ok thanks, I will find a way to re-use the 4 holes. It's just that my heatsink is a bit smaller than these.
    Regards from Switzerland
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    Electric Warrior CaptainKlapton's Avatar
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    The 1238-7501 I bought from ARC-EV was liquid cooled. They drilled and tapped 8 holes 1cm deep in the base. I can measure the locations of them if you would like.
    IMG_20141225_111026.jpg
    "Never let schooling interfere with your education."
    -Mark Twain

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    Empulse R #24 frodus's Avatar
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    I'd do that then if they've already done it... Get the measurements and post em. Maybe arc will post them?

    I bet they've taken it apart to find those hole locations.
    Travis

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    Electric Warrior CaptainKlapton's Avatar
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    It has definitely been taken apart.

    This is with the battery terminals at the top of the picture: IMG_20141228_205718.jpg

    and here are the measurements (x,y ordered pairs in mm as measured by a ruler)
    TOP
    Black: (64,79)
    Red: (103,52)
    Yellow: (100,52)
    Blue: (70,82)

    BOTTOM
    Black: (57,28)
    Red: (95,55)
    Yellow: (106,55)
    Blue: (75,26)
    "Never let schooling interfere with your education."
    -Mark Twain

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