Results 1 to 18 of 18
  1. #1
    mtbr member
    Reputation:
    Join Date
    Mar 2011
    Posts
    6

    Hope Vision 2 mk1 upgrade help

    i have a complete hope vision 2 mk1 set of lights with a dead micro switch on the board

    i was not very satisfied by the output of my light before the switch packed up (lumen envy) so i want to upgrade the unit whilst repairing it.

    my plan is to use

    2x http://ledsupply.com/creexpg-w417.php - LED's
    2x http://ledsupply.com/10507.php - optics

    i want to drive these (or similar) from the hope 7.4v li-ion batteries.

    can anybody recommend the the right PCB to do this ?

    the PCB does not have to fit inside the unit as I am planning an addition to the back of the led mount board / heat sink.

    is there a better LED set-up to use Lumen wise?

    I'm in the United Kingdom which may affect supply and so component decisions

    any help / opinions / suggestions appreciated

  2. #2
    mtbr member
    Reputation: HEY HEY ITS HENDO's Avatar
    Join Date
    Feb 2008
    Posts
    713
    did you take into account shipping costs
    import charges/vat if buying from the states??
    try here, ....http://www.led-tech.de/en/index.html
    .
    .
    ...Scun.thorpe, UK

  3. #3
    mtbr member
    Reputation:
    Join Date
    Jul 2008
    Posts
    167
    hi
    you will get stung ordering from led supplys well not them selfs but fedx shipping.
    thwang

  4. #4
    mtbr member
    Reputation:
    Join Date
    May 2010
    Posts
    333
    What about a twin XM-L conversion?

  5. #5
    mtbr member
    Reputation:
    Join Date
    Mar 2011
    Posts
    6
    thanks guys

    latest plan revision

    avoid buying from the states!

    use a pair of cree XM-L

    http://www.led-tech.de/en/High-Power...4_120_170.html

    i think i can use the original optics with these which is great

    now to best drive these from the 7.4v li-ion battery what should I use current regulating device should i use ?

  6. #6
    mtbr member
    Reputation:
    Join Date
    Apr 2010
    Posts
    488
    Try lflex, but keep it cooled.

  7. #7
    mtbr member
    Reputation: HEY HEY ITS HENDO's Avatar
    Join Date
    Feb 2008
    Posts
    713
    maybe a helpful link for our new forum member mr Toaster!

    here it is... http://www.taskled.com/index.html
    ...Scun.thorpe, UK

  8. #8
    mtbr member
    Reputation:
    Join Date
    Apr 2010
    Posts
    488
    Sorry! Haven't noticed it was his first post :S

  9. #9
    mtbr member
    Reputation: yetibetty's Avatar
    Join Date
    Dec 2007
    Posts
    1,781
    IRONCROFT, don't forget good old lumitronix, they never let me down and I'm in the UK.

    http://www.leds.de/en/High-Power-LED...gh-Power-LEDs/

  10. #10
    mtbr member
    Reputation:
    Join Date
    Mar 2011
    Posts
    6
    cheers folks

    As much as I can gather the lflex driver seems to have everything I'm looking for so.........

    just to check

    if I use 2 X cree XM-L wired in series I can drive them using a lflex driver ( http://www.taskled.com/techlflex.html )


    has anyone in the UK bought one of these lflex drivers?

    what do we think about an old computer CPU finned heat sink in full airstream on the handle bars for the driver? got to be more than enough right?


    yetibetty, do leds.de supply with the LED mounted to the star PCB or just with them?

    if they don't come pre-mounted then I'll get the LEDS from led-tech.de as it states that they can be supplied mounted on the star PCB's

    I'm all for minimising soldering if possible.


    and finally thermal glue

    should i get ArcticSilver thermal glue?
    ( http://www.leds.de/en/High-Power-LED...e-2x-3-5g.html )

    or is there something better / just as good and cheaper?



    once again much thanks for any help

  11. #11
    mtbr member
    Reputation:
    Join Date
    May 2010
    Posts
    333
    Would there be an advantage of using say a h6flex instead?

  12. #12
    mtbr member
    Reputation:
    Join Date
    Oct 2009
    Posts
    179
    H6flex is a nice driver but its bloody huge and a fair bit more expensive. Using 7.4v battery with 2 x XPGs/XMLs the Lflex will be great.

    Ironcroft, I'm in the UK and I've got a couple of Lflex's. Got one driving a 2 x XML helmet light from 7.4v using Ledil LXP RS lenses.

    Lots of light but overheats my housing at anything over 2A. Might re-deploy the XMLs to a bar light (which is what they were originally bought for) and replace with a pair of XPGs driven at 1.5A originally bought for the job.

    From memory the Hope 2 is a neat little lamp but doesn't have huge surface area so you might have to be realistic about how much power the heatsink can dissipate. However, even 2 x XPGs at 1.5A will be a big improvement.

  13. #13
    mtbr member
    Reputation: yetibetty's Avatar
    Join Date
    Dec 2007
    Posts
    1,781
    yetibetty, do leds.de supply with the LED mounted to the star PCB or just with them?
    The last time I bought from Lumitronix they had various mounted on MCPCB options. When you find the LED you want then click on" shape".
    Last edited by yetibetty; 03-14-2011 at 07:07 PM.

  14. #14
    mtbr member
    Reputation:
    Join Date
    Mar 2011
    Posts
    6
    Thanks for all your pointers


    Ordered the XML's + consumables from the Germans

    emailed TASKLED

    Going to knock out a heat sink extension for the LED mount on the lathe tomoz lunchtime in preparation. I'm planning on using thermal compound at every joint all the way to the bars to loose a wee bit of heat that way, and if (when) all this fails to lower the heat enough there's nothing stopping me TIGing an extension on the back of the light.

    Contemplating a nice ali housing for the lflex and switch too watch this space........

    Thanks again

  15. #15
    mtbr member
    Reputation:
    Join Date
    Mar 2011
    Posts
    6
    I'm now the proud owner of a 1950 lumen (theoretical) bike light

    Lflex is programmed in UIB2 multimode


    The light housing gets warm fairly quickly if left on high when stationary but is fine if pressed down to a low setting when stopped.

    really impressed with the user friendly-ness of driver operation and programming.

    a photo of the set-up before final tiger seal waterproofing,

    compleated unit not seal yet

    and after when installed on the bike.

    setup on bike

    I've only got a phone camera but i'll be posting in the beamshot thread when i can get a friend with a nice SLR out in the dark.

  16. #16
    mtbr member
    Reputation: HEY HEY ITS HENDO's Avatar
    Join Date
    Feb 2008
    Posts
    713
    ...nice one!! turned out pretty neat
    am liking the Lflex housing, does it get warm at all?
    ...Scun.thorpe, UK

  17. #17
    mtbr member
    Reputation: yetibetty's Avatar
    Join Date
    Dec 2007
    Posts
    1,781
    Nice one.

    I have always loved the Hope Vision 2 MK1 housing, good to see it going to good use.

  18. #18
    mtbr member
    Reputation:
    Join Date
    Mar 2011
    Posts
    6
    Cheers folks,

    hendo the Lflex housing stays pretty cool the whole time.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •