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Thread: New build!

  1. #1
    MHC
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    New build!

    I had an old Hope HID kicking around so ordered a 7up XPG3 board & narrow optic to breath new life in to it.

    https://www.led-tech.de/en/7x-CREE-X...35mm-round-PCB

    Strip out HID parts

    New build!-img_20190202_123604.jpg

    Fix LED board to home made heat pill with M3 screws

    New build!-img_20190202_123407.jpg

    New build!-img_20190205_135803.jpg

    Fit HBflex from Taskled

    New build!-img_20190211_142843.jpg

    Wire up to power socket

    New build!-img_20190208_142700.jpg

    Capable of 5075 lumens!

    New build!-img_20190208_142648.jpg

    Programmed in Duo mode for approx 900 lumens on dipped beam & 4400 on main (5075 gets hot & pulls over 4A from 4S Li battery) very pleased with the result for around 60

    Dip switch is attached via the yellow plug & mounted near my right thumb

    New build!-img_20190227_083126.jpg

    New build!-img_20190227_083202.jpg
    Last edited by MHC; 02-27-2019 at 01:20 PM.

  2. #2
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    Nice re-purpose! What is the beam like? Seems like 5 emitters in a 35mm 5 up optic is going to be pretty wide. I've used 3 up XPG-2 in the 35 mm size and it was OK but too wide for my preference.
    GoPro adapters for bike lights http://www.pacifier.com/~kevinb/index.html

  3. #3
    MHC
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    Beam is ok, there's so much light in the near ground that its difficult to tell how much more there is over my previous light,
    7up xpg R4 @ 1000mA maxflex3 25 degree optic, about 2250 lumens in an old Trailtech HID that I built about 6 years ago, but definitely a lot more with a bit more throw.

    New build!-img_20170507_151715.jpg

  4. #4
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    Thanks. I always enjoy people describing what they've done.

    Tim

  5. #5
    MHC
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    I've been using the light for a few weeks & have been very happy with the results, I'm liking the new programmable strobe modes on the HBflex - I'm using an always on at level one with a bright 50 millisecond pulse every 0.5 second for daytime riding (like Exposure daybright lights)
    Heat seems well managed from the LED & control boards but the front end of the light gets hotter, I've polished the anodizing off the inside of the housing - there must be a point at which the amount of light lost in the lens due to its less than 100% efficiency gets critical.
    Do any of the optic makers state a maximum lumen value?

  6. #6
    Drinkin' the 29er KoolAid
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    Nice work with that conversion! How tightly does your homemade pill fit with the casing? Did you set thermal protection to ensure things don't get too hot?

  7. #7
    z1r
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    Wow, very impressive. I have an old niterider light from the 90's. I wonder if a similar upgrade is possible? Back in the day I replaced the batteries with some rechargeable RC Car batteries from Radio Shack mostly for increased run time. We could ride for up to four hours instead of 1.5 on the factory batteries.

    It would be cool to resurrect the light if possible.

  8. #8
    MHC
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    The pill is a nice snug fit & generous smear of thermal compound keeps things cool.
    It trips the 50C thermal setting after 2 minutes on full indoors at 20C ambient.

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