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Lamp modding advice wanted

Discussion in 'Anything Airgun Related' started by bluemonkey, Dec 31, 2013.

  1. bluemonkey

    bluemonkey Busy Member

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    Location:
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    Hi guys a few months ago i was given an cree xm-l t6 with pressure switch, charger, spare battery and a mount and ive found it a reasonable little unit, however its got 2 main problems. 1 its a multi mode torch and i dont need it to strobe when im in the field and 2 its a white led and filtering it well kills the light output too much. So my question is, is it possible/cost effective to replace the led with a red one and some how make it a simple on/off switch? Thanks guys, oh keep it simple my electrical knowladge is that of a cave man right now! ps are there any other simple/cheap mods that would make it a better torch. Thanks again guys Happy new year!
     
  2. terry1001

    terry1001 Major Poster

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    It will need a new (coloured) led and a suitable driver. You would need to be able to solder small parts to install these and you would then have a bright torch with a simple on off operation.
    It may not be cost effective to buy the parts as one-offs. I can't be any more specific about this as there are so many versions of this type of torch and they are all slightly different. I buy quite a few torches using the Cree XML T6/U2 led and, even from the same supplier, there are often slight differences.
     
  3. bluemonkey

    bluemonkey Busy Member

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    Thanks terry, ignoring the modes for now how easy (or not) is it to change just the led and where would the best place to look be as i cant seem to find a red T6 listed on ebay or DX. thanks again.
     
  4. terry1001

    terry1001 Major Poster

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    OK, the leds and drivers need to be matched. The Cree XML T6 is a white led only and it runs at up to 2.8 amps for full power. The drivers supply a constant current within a limited voltage range so the led remains at the same brightness until the battery is almost fully discharged.
    For a red led the options are really either a Cree XPE or Oslon SSL, these run at 1 amp (some of the XPE only take 700ma) so you will need a different driver to the original XML. When I modify these I also take steps to improve the heat dissipation as well.
    Usually the torches come with a larger star for the led mount and it contacts the pill by about 1-2 mm all round. If you can't get a led on the same size star you will need to fill in the centre of the pill to take the smaller star - they are often 16mm.
    Leds on stars can usually be found at led tech in Germany or Fastech who do the drivers as well (led tech don't)
    There is another possible problem as well, the original drivers are about 20mm diameter but the replacements are nearly always 17mm so you need an adapter to fit them to the pill. If you can find a driver of the right diameter to fit they are crimped into the pill at the factory which isn't that easy to do yourself.
    So, it's not difficult but can be a bit fiddly.
    http://www.fasttech.com/products/16...ee-xp-e-1w-620-630nm-red-light-led-emitter-on
    http://www.fasttech.com/products/1612/10001706/1124400-2-amc7135-star-base-plate-pcb
    http://www.led-tech.de/de/High-Powe...slon-SSL-80-rot-auf-Star-LT-1972_206_207.html
    http://www.fasttech.com/products/16...-amc7135-5-mode-led-flashlight-driver-circuit
     
  5. bluemonkey

    bluemonkey Busy Member

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    cheers terry thats give me something to mull over, i have just seen a 4 colour cree t6 on the cree website, stupid question time, as only one colour is on at a time would each led have the same output as a single led? thanks
     
  6. Oscargrouch

    Oscargrouch Well-Known Member

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    Location:
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    Hi Bluemonkey ,

    Your link takes you to a four function mode, not a four color? And at the end of the day for shooting, you are talking about a lamp for less than £50. and not £300.....:D
     
  7. bluemonkey

    bluemonkey Busy Member

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    Dont take any notice of the link its just an automatic one that is built into the forum based on key words.
     

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