WOOOO, thanks! I plan to upgrade my SL6 asap!
Converting SL4 Xenon > LED?
- Thread starter ChimChim75
- Start date
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ChimChim75
Contributor
I used a big o-ring to keep the spacer from moving around.
That's a good idea.
My problem seemed to be that the drop in was not making a good connection with the inside of the headset spacer. After all the adjustments for fit, the spacer was out of round and a little "off" for good contact. I opened it up a little and used some AL flashing to "shim" it. That seemed to work fine.
My problem seemed to be that the drop in was not making a good connection with the inside of the headset spacer. After all the adjustments for fit, the spacer was out of round and a little "off" for good contact. I opened it up a little and used some AL flashing to "shim" it. That seemed to work fine.
Anybody use the CREE R2 from dealextreme for this mod?
Specifically this one: DealExtreme: $9.10 Cree R2 Drop-In 1-Mode LED Module (3.7V~18V / 26.5mm x 29mm)
Any reason on going with the Q5 over the R2?
I just bought one intent on making it work in my mini Q40 and trying it with some rechargable NiZn batts.
Specifically this one: DealExtreme: $9.10 Cree R2 Drop-In 1-Mode LED Module (3.7V~18V / 26.5mm x 29mm)
Any reason on going with the Q5 over the R2?
I just bought one intent on making it work in my mini Q40 and trying it with some rechargable NiZn batts.
haibeis
Registered
Matey - thats pretty much the same one as the one i used...
the Q5's are a lower specced bin - and not as bright as an R2
the Q5's are a lower specced bin - and not as bright as an R2
Yah, I thought it was pretty much the same but read the R2 was brighter so was wondering why use the Q5. Thought maybe there was another reason.
These have a driver board on them correct? Does it limit the current/voltage going to the LED to maintain a constant current? For example if I use 6.6V will it drop the voltage/current down to run the LED at a specified wattage or does it just run at the max current for the given resistance of the ckt and applied voltage?
Asking as I'm curious if it'll effect brightness of the LED to use 4 NiZn batteries (6.6V) vs. trying to modify it a bit to use 2 18650's (7.4V). I think I could fit 2 with a small PCB inside the case if I tried.
Cool thread. I'll be giving this a try with an old SL6 I have. Anybody know if the same can be done to an old Ikelite PCa light I have?
haibeis
Registered
Matey - these units have current control in them - same brightness regardless of voltage.....they will draw more current at lower voltages to compensate.
Thanks, thats about what I had figured.
I got my R2 unit and from the looks of it there is no way it will fit in the UK mini Q40 without making a new head assembly or using a different reflector. The diameter of the copper heat sink and reflector is simply too large, even if ground down to 24mm to fit inside the head it won't fit with the xenon mini Q40's inside diameter of the plastic case.
Looks like I'll just buy a SL4 or SL6, maybe a used one that is burnt out.
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