Search results

  1. S

    making normal LED waterproof by "potting" in polyurethane resin?

    Ah i thought you meant something like this: http://www.candlepowerforums.com/vb/showthread.php?237323-Modified-MTE-SSC-P7-900-Lumen-2-Mode This method is now obsolete as you can buy a ready-made one for about the same price.... the same guy does something similar to what i think you are...
  2. S

    making normal LED waterproof by "potting" in polyurethane resin?

    I'd say its possible.... But it is also a way of ruining a perfectly good flashlight.... These days, there are a raft of cheap dive lights available - probably cheaper than buying a pot of glue ;-) cheers,
  3. S

    Using a cheap Chinese bike light as a canister light head?

    Upadate! (sort of) due to the performance/price equation i bought another one of these lights to make a video light for a small underwater HD camera. i went with an ebay deal that came with a torch body, charger and 2 26650 batteries. After a few uses, both the new torch and the old one...
  4. S

    thinking of upgrading to u3 - opinions sought!

    Folks - i have a couple of dive lights that might benefit from some newer technology.... One is a magicshine with an SSC-P7 driven by 2x 18650 in series , and the others are a cree T6 and U2 respectively ,driven by a single 18650. I was thinking of getting me 3 Cree u3's and swaping them in...
  5. S

    Help Needed! Possible to convert Trustfire 8500 LED to a Dive Light?

    .....you could try something like this: http://www.candlepowerforums.com/vb/showthread.php?237323-Modified-MTE-SSC-P7-900-Lumen-2-Mode .... But unless you already have the trustfire, and are willing to risk trashing it - (having modded and flooded a few lights over the years i speak from...
  6. S

    DIY PressureTesting of lights

    2nd that... also - if it happens to fail the pressure test - since you are likely to have used fresh water, the electronics will probably survive the dunking !!!!
  7. S

    Help me I am looking for a LED flashlight for a new

    matey - try here: http://dx.com/p/2200lm-white-light-3-led-5-mode-flashlight-drop-in-module-silver-golden-3-5-8-4v-2-8a-126121#.Uyuu5M7PvfQ this has the driver and reflector already built in. or here: https://www.cutter.com.au/proddetail.php?prod=cut890 if you really want to do it all...
  8. S

    Smooth vs Orange Peel Reflector for diving light modification

    Matey - try here and see if you can get one that fits... http://www.kaidomain.com/Category.228 cheers,
  9. S

    Using a cheap Chinese bike light as a canister light head?

    No worries - you should find a way to measure the voltage while the battery is under load - i.e. when the light is shining - the batteries will have a different voltage with no load. cheers,
  10. S

    Using a cheap Chinese bike light as a canister light head?

    My AUD$0.02... The LED's themselves need "around" 3.6 volts to fire up properly - some more, some less depending on manufacturing tolerances... the batteries start out at around 4 volts and drop to 3.6 before the protection circuit cuts in... this does not leave much for the driver to work...
  11. S

    Using a cheap Chinese bike light as a canister light head?

    You can - but both solutions will waste power.... you could also replace the existing driver with one that can handle 12v.....BUT this particular light has a driver integral to the housing, and also has an internal set of reed switches so that it can be switched on and off via a magnet hidden...
  12. S

    Using a cheap Chinese bike light as a canister light head?

    i don't care much for "woulds" and "Probablies"..... I own one of these units and have used it underwater ....for the type of diving i do - nowhere near caves or wrecks, or anywhere else that actually needs a full burn for 3 hours - i don't notice the difference..... for the odd night dive...
  13. S

    Using a cheap Chinese bike light as a canister light head?

    That was what i was going to do as well.....only i was going to make a 3.7v battery pack.....i'm tipping that 11.8v will result in smoke.....having killed a similar cheap light attempting the same thing......and killed that one with a mere 7.4 volts..... i was going to use 9 x 2500mAh AA nimh...
  14. S

    Using a cheap Chinese bike light as a canister light head?

    Having just bought one of these with the intention of making a canister light.....i can confirm they would be a good starting point... brighter than a 10W HID..... Although......seeing as the burn time is around 2-3 hrs with a 26650....and they are a tiny little unit.... i am no longer going to...
  15. S

    Wet plugs for charging

    !!!!! http://en.wikipedia.org/wiki/Diode_bridge !!!!!
  16. S

    Wet plugs for charging

    Always thought this would be a good idea, and will now give it a try... Although my idea was a single diode - not a rectifier.... (you'd have to wire it up the right way to charge, but would result in only half the voltage drop) You could put the charging cct inside the canister as...
  17. S

    PVC / ABS Canister Questions

    Matey - not sure about canadian fittings, but here in aus i have used 50mm threaded end caps. (brand is called "ipex") they work fine as long as you replace the one that came with the cap....its too hard and too small.... i got some 3mm thickness nitrile ones and lubed them heavily - they have...
  18. S

    LED conversion on UK SL4 getting really hot

    Variable indeed! I also tried this mod with a SSC P7 module....let me be the first to say that 12watts inside a plastic housing will not work....and i have the burned fingertips to prove it!
  19. S

    LED conversion on UK SL4 getting really hot

    Packhorse - firstly thank you as i got so upset i decided to put this to the test...and noticed my Nimh are flat so i am charging them now for this weekends dive! I got my XPG and XRE drop ins and measured the current they draw at various voltages.... raw results tabled below: Applied Volts...
  20. S

    LED conversion on UK SL4 getting really hot

    "The AMC 7135 driver is a linear driver." Dude - i know nothing about the 7135 driver of which you speak....and of course if you use such a driver you will waste power... i offfered my advice based on having built a few SL4 conversions with P60 modules....and the OP was specifically asking...
Top