Australia and New Zealand · Public discussion

Cree XR-E LED bicycle light

Started by Russell Lang · · Last activity · 7 posts · 890 views

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Australia and New Zealand
Published
17 February 2007
Last activity
14 April 2007
Original author
Russell Lang
Posts
7
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Public discussion
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  1. My previous bike light used a Luxeon III LED,
    http://www.ghostgum.com.au/misc/BikeLightV1.htm
    and was based on Suzy's design
    http://www.littlefishbicycles.com/bikelight/index.html

    Since then, Cree released the XR-E LED with twice the efficiency of the older Luxeon LED. It was
    time for a simple upgrade by replacing the LED and optics.

    The results can be seen at
    http://www.ghostgum.com.au/misc/BikeLightV1_5.htm

    Old light was 80 lumens, new light is 170 lumens. The new beam has a bright spot in the middle, 4
    times as bright as the old beam. I confirmed the improvement - I can see the spot on the road under
    street lights.

    Another method suggested for a bike light is to strap one of the Fenix torches (L1D CE or L2D CE) to
    the handlebar or helmet.
    http://www.torchworld.com.au/catalog/index.php?main_page=product_info&cPath=96&products_id=371
    http://www.torchworld.com.au/catalog/index.php?main_page=product_info&cPath=96&products_id=370
    These give 90 - 135 lumens on turbo power setting using one or two NiMH AA cells.

  2. In article <[email hidden]>,
    [email hidden] says...

    Quoted message said:

    My previous bike light used a Luxeon III LED,
    http://www.ghostgum.com.au/misc/BikeLightV1.htm
    and was based on Suzy's design
    http://www.littlefishbicycles.com/bikelight/index.html

    Since then, Cree released the XR-E LED with twice the efficiency of the older Luxeon LED. It was
    time for a simple upgrade by replacing the LED and optics.

    The results can be seen at
    http://www.ghostgum.com.au/misc/BikeLightV1_5.htm

    Old light was 80 lumens, new light is 170 lumens. The new beam has a bright spot in the middle, 4
    times as bright as the old beam. I confirmed the improvement - I can see the spot on the road under
    street lights.

    Another method suggested for a bike light is to strap one of the Fenix torches (L1D CE or L2D CE) to
    the handlebar or helmet.
    http://www.torchworld.com.au/catalog/index.php?main_page=product_info&cPath=96&products_id=371
    http://www.torchworld.com.au/catalog/index.php?main_page=product_info&cPath=96&products_id=370
    These give 90 - 135 lumens on turbo power setting using one or two NiMH AA cells.


    Hi Russell,

    I have my LEDs, but still find it impossible to source FCG optics, which
    would be a drop in replacement for my lights, upgrading from Lux III's.

    Did you just give up on getting FCG's, and went the smaller lens route
    in sheer frustration?

    Ray

  3. Ray,

    Quoted message said:

    I have my LEDs, but still find it impossible to source FCG optics, which
    would be a drop in replacement for my lights, upgrading from Lux III's.

    Did you just give up on getting FCG's, and went the smaller lens route
    in sheer frustration?

    I tried to get whatever optics were available from the supplier, Cutter Electronics. I tried to get
    the Fraen FC and Khatod PL265, because these suited the XR-E and would fit in my existing light.
    The Fraen FCG would not fit. In the end, the Fraen FC was the only suitable lens I received. There
    is another optic (from a manufacturer whose name escapes me) which is even smaller and one user
    didn't like the result.

    I'm happy with the result. I'll give it a more serious test on Monday night when I need to use the
    light on short trip.

  4. Hi,
    I read this thread when I was searching for info on bike lights. I've
    moved to the country and need lights for night riding on unlit roads.
    In the past I have used a halogen headlamp and a lead acid battery
    which was OK but bulky. I read a whole lot of stuff about types of
    lights and in the end I ordered a couple of Fenix L2D CE. I received
    them today and I think maybe one would be enough but hey 2 of the
    Fenix torches costs less than the high power halogen lamps with
    rechargeables and they are very compact and I can use them for other
    stuff.
    Thanks for the suggestion Russell. I'm impressed with your light
    building info.

    Peter.

  5. I have been using my Fenix L1D for commuting over the last couple of weeks and am very happy with it. I can run it on high for the one hour trip on a 2500 mAh NiMH cell with no noticable dimming and it is bright enough for urban commuting. The major issue I have, and this may be due to the way I attach it to the bars (using a Nite Ize Lite Ride), is that it tends to reset itself to "low" output mode if I hit a large bump, but this only happens a couple of times per trip. It can be tricky to alter the power settings while riding, since this needs a precise touch on the end cap.

  6. On Apr 13, 10:38 pm, roshea <roshea.2oz...@no-

    mx.forums.cyclingforums.com said:

    I have been using my Fenix L1D for commuting over the last couple of
    weeks and am very happy with it. I can run it on high for the one hour
    trip on a 2500 mAh NiMH cell with no noticable dimming and it is bright
    enough for urban commuting. The major issue I have, and this may be due
    to the way I attach it to the bars (using a Nite Ize 'Lite Ride'
    (http://www.niteize.com/productdetail.php?category_id=28&product_id=79)),
    is that it tends to reset itself to "low" output mode if I hit a large
    bump, but this only happens a couple of times per trip. It can be
    tricky to alter the power settings while riding, since this needs a
    precise touch on the end cap.

    --
    roshea

    Maybe you could put a lump of foam between the bars and the torch -
    the damping might stop the reset.

    donga

  7. Donga said:

    On Apr 13, 10:38 pm, roshea <roshea.2oz...@no-

    mx.forums.cyclingforums.com said:

    I have been using my Fenix L1D for commuting over the last couple of
    weeks and am very happy with it. I can run it on high for the one hour
    trip on a 2500 mAh NiMH cell with no noticable dimming and it is bright
    enough for urban commuting. The major issue I have, and this may be due
    to the way I attach it to the bars (using a Nite Ize 'Lite Ride'
    (niteize.comproductdetail.php)),
    is that it tends to reset itself to "low" output mode if I hit a large
    bump, but this only happens a couple of times per trip. It can be
    tricky to alter the power settings while riding, since this needs a
    precise touch on the end cap.

    --
    roshea

    Maybe you could put a lump of foam between the bars and the torch -
    the damping might stop the reset.

    donga

    Worth a try, and I have some foam from my previous version of torch mounting hardware. The "Lite Ride" wraps around the torch and the bars, holding the front and back of the torch (link in my earlier post). It is a real stretch to fit it around oversized handlebars, so I attached a Minoura "Swing Grip", which unfortunately adds some vibration to the system.

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