Yeah I am still on our side don’t worry. Just got to keep the bills paid in order to be on anyone’s side.
Money is not a driving factor for me, I am a pretty simple guy that likes toys. I always have what is best for the consumer at heart. After all I generally only work on lights that I want myself.
By working with the companies directly I am able to get BLF style tech into factory lights.
Yes, I do expect to be paid for that service, it takes a LOT of time to make production ready drivers / improvements to lights. The MT09R for example easily has well over 100+ hours of R&D at this point. I do not feel bad in the slightest for feeling that is worth something.
Some BLF members would like to have BLF Q8 PCB with soldered cold white 6500K Luxeon V LEDs, I'd like to know how many people would be interested,
if there is 40pcs+ interest, price would be the same (19,97€ soldered), if there is 20pcs+ interest, price would be 21,97€ soldered. Please express your interest.
Your numbers sound perfectly reasonable, my Q8 with Luxeon V ’s does almost 8000 at start-up, 7500 after 30 seconds.
9000 is not likely, that is 2250 lm per led, even the bare led at 9A does only 2300/2400 lm, substract at least 15% for reflector and lens gets you 7800 lm at most. That is if the light indeed reaches the 36A.
Tests of the new Luxeon V show it peaking at 2400-2500 lumen at about 10A. So when you add in the losses from the reflector and the lens, there’s pretty much no way you’re ever going to get 9000 lumen.
I would say your output scaled up just as it should since the Luxeon V is only capable of a couple hundred lumen brighter than the xpl. If your getting 1300 more lumen, then that’s 325 more lumen per emitter. This sounds about right.
Has anyone actually done and documented all the mods required to do XHP50? I dont think any of those 2s2p boards or any driver has ever been tested. I guess Lexel needs to buy this PCB?
Thanks for the answers, by “spacer” do you mean a “retaining washer” like this flat bar style djozz made?
(DIY washer+M4 screw)
I suppose it could be a round washer instead of a flat bar?
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Or maybe swap out the stock springs with these?
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I’d really like to know if the Luxeon V 4000K is overall more white (less yellow) compared to the 4000K Crees.
I think first I’ll order 1pc. Luxeon V and install it in a single emitter light and see how I like it compared to Cree XPL 5A.
2. Yes, even I plan to put these springs in my Q8 once I receive them. They are still not as good as a proper spring bypass. This is the only way you could get 7000 lumens+ out of a non XHP50.2 light.
Luxeon V 4000K has a better tint than all Cree 4000K leds, but the 4000K 80 CRI Cree leds (all types that I came across) still have a very good tint.
For the 7000K+ output you do need a spring bypass.
The reflector holes do not need to be adapted, the V’s fit in the holes. You do need to ream the plastic centerpieces, and because they are so thin and provide little grip it is not easy (and there is 4 of them :weary: )