New 7-up XPH35 build- Mtbr.com
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  1. #1
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    New 7-up XPH35 build

    So, after seeing kwarwick's triple mod here: http://forums.mtbr.com/lights-diy-do...35-993665.html, I decided that the XPH was the way forward for my new bar light.
    It'll be a 7-up board from Cutter wired in parallel and powered with a H6Flex @ 6.6a (if possible). Each LED should get just under an amp each so, theoretically, good for about 11k lumens.
    Managed to make a start on the housing yesterday and I think it should be OK for heat.
    A few pics:
    New 7-up XPH35 build-imag5096%5B1%5D.jpgNew 7-up XPH35 build-imag5097%5B1%5D.jpgNew 7-up XPH35 build-imag5098%5B1%5D.jpgNew 7-up XPH35 build-imag5090%5B1%5D.jpg
    Will update as the build progresses

  2. #2
    Drinkin' the 29er KoolAid
    Reputation: kwarwick's Avatar
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    Looks nice! I like the beefy heatsink fins. For a light of that power I'm curious why there is doesn't appear to be an integrated shelf for the LED plate? Are you going to have a screw in pill?

  3. #3
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    Quote Originally Posted by kwarwick View Post
    Looks nice! I like the beefy heatsink fins. For a light of that power I'm curious why there is doesn't appear to be an integrated shelf for the LED plate? Are you going to have a screw in pill?
    There's going to be a plate that sits, sandwiched, between the 2 halves. The LED's will sit on one side, the driver on the other.

  4. #4
    Drinkin' the 29er KoolAid
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    Quote Originally Posted by deesta View Post
    There's going to be a plate that sits, sandwiched, between the 2 halves. The LED's will sit on one side, the driver on the other.
    Ah, that makes sense. It will be important to have a very good interface between that plate and the body to ensure heat transfers efficiently... maybe some heatsink compound on the mating surfaces?

    Definitely looking forward to seeing your progress on this light.

  5. #5
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    Yeah, that's the plan. Will put some on all mating faces to make sure it's a good interface.

  6. #6
    RAKC
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    That case looks awesome, nice work.

    After doing some research for my stuff, found something important about dealing with heat issues:

    Raw aluminum is horrible at dissipating heat. Awesome direct transfer but radiating heat it sucks. So if you can, anodize the outside (remove it where your plate for the emitters will contact the housing) or simply use paint will decent emissivity. Will help alot with heat. Even clear anodizing will do as good as any other color.

  7. #7
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    Good tip mate. Luckily we get stuff anodised through work so these will be getting done..
    Just need to work out a colour..probably black to match the bike.

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