When I did my SST-40 mod, the Q8 reflector didn’t even fit properly over the emitter packages without reaming. They might have fit singly, but there was enough slop in the reflow of the emitters on the board, and perhaps the boring of the reflector that it wasn’t possible to get it to fit over all four at once without opening the holes up.
[quote=djozz]
[quote=hcanning]
I’m looking at this board, and feel tempted. Did you do any other mods besides the spring bypass to get 7000 lm?
I wonder, can I get a Q8 host for reasonable price so that I won’t have to throw away the stock LED board?
[quote=Alexium]
[quote=djozz]
There’s no Q8 host sofar and I’m not sure about the demand for such a host, it will not be that cheaper than a full light.
The luxeon V mod is a while ago and I’m sure I did everything to get the resistence down, but the most significant measure is still bypassing the springs. I must have cleaned and tinned the screw-connections to the battery tube at the tailboard, and probably shortened the ledwires a bit. I think the stock ledwires were already 18AWG, but if not I changed to 18 AWG.
I modded my Q8 with Luxeon MZ, bypassed springs and DC-Fix foil.
I get around 10,000 lumen on the start and 8800 after 30 seconds.
Here are some details: What did you mod today? - #6984 by Wieselflinkpro
Questions:
Did you do anything to the stock driver or leave it be?
Did you set the emitters off center to reduce the dead spot in the center of the beam?
Do you have more beamshots comparing the unmodded Q8 to the Q8 with the Luxeon MZ emitters?
Great work btw, cheers.
Here are 2 new pictures comparing stock XP-L LED with and without DC-Fix. https://www.taschenlampen-forum.de/media/albums/blf-q8.2372/
All Pictures (Luxeon MZ and XP-L) in automatic mode and with different output levels of the flashlight. But you will see the differences in beam pattern.
From What did you mod today? - #6986 by contactcr
Stock lens about 6100 Lumen and DC-Fix lens about 6000 Lumen at startup. … with different batteries as on my former measurements. And I did Turbo-Beamshots between the todays measurements (with and without DC-Fix).
First time modding a flashlight today.
Emitter swap to some 5000K LH351Ds, swapped the switch LEDs to orange, and flashed Anduril.
The nicer tint has made this a light I’ll enjoy using far more than with the stock emitters.
Cool. You did all that as a first mod? I’m still not up to reflashing mcu’s. Lol
I liked the 5000K LH351D myself until I compared them to the 5000K Nichia 319AT, then they looked a bit green/yellow. The only problem is the 319AT doesn’t put out the high lumens like the LH351D do. Decisions decisions.
Quick and dirty pocket/belt clip for mine. The bump around the bolt head helps retention a little bit.
Well done! :+1:
Could you share some details about your build process?
Its just a strip of SS, allen head bolt with a aluminum “cup” I machined to go around it and help material slide through. Its sturdy but not low profile or anything. Didnt harden the SS so I can bend it to make it tighter or easier to slide. The Q8 is a heavy pig to hang on my belt but its better than it swinging around on a lanyard in the shop. Hangs on my backpack pretty nicely while hiking or on the motorcycle. Only took me about 30 minutes with basic tools to bang out.
Thanks for the details. I was wondering about the cap around the bolt’s head.
I like the idea of a clip rather than a holster while hiking.
[quote=junkyardbiker]
Its just a strip of SS, allen head bolt with a aluminum “cup” I machined to go around it and help material slide through. Its sturdy but not low profile or anything. Didnt harden the SS so I can bend it to make it tighter or easier to slide. The Q8 is a heavy pig to hang on my belt but its better than it swinging around on a lanyard in the shop. Hangs on my backpack pretty nicely while hiking or on the motorcycle. Only took me about 30 minutes with basic tools to bang out.
What stops it from rotating?
Nice clip!
Love the clip jyb. Made me smile. It’s also a good anti roll feature. Nice work.
The end of the clip where it screws to the light is firmly butted against the raised fin in front of the flat spot, so it has something to kinda brace against.
Ok, so I ordered replacement copper/brass round top screws, as well as some wire, and copper caps to use for spring bypass, I was curious… so any of you think it would be an issue to use a little of this: Loctite 466863 C5A Paste Anti-Seize Lubricant on the copper screws. It is a copper based anti-seize that should help with power transfer through the threads (at least it wont hurt) and should prevent stripping the screws if they ever need to be removed.
What do you guys think?
Is this the same stuff? It would help if you included a link:
https://www.amazon.com/Loctite-466863-Anti-Seize-Lubricant-Temperature/dp/B002A64RLA
I have to buy some of this after reading this Amazon review of it 
:
4.0 out of 5 stars Lubricant, I like the way that sounds.
September 26, 2018
Verified Purchase
I used like a boogers worth, and it is slicker than snot so that should be enough. Just not sure what I'm going to put the rest on? Think I'll leave it in the Will for the grandkids.
It all sound real good, though I have no experience with it. It doesn't say it's conductive - that would be important to me, depending on what screws it goes on. Thermally, it's probably excellent.
Per Loctite is has “good electrical and thermal conductivity”.
Typical Applications: Spark plug threads installed in aluminum, exhaust manifold bolts, engine bolts, oxygen sensors, knock sensors, thermostat housing bolts, fuel filter fittings, and battery cable connections.
I am not sure what “good” is - but I would imagine that it most likely wouldn’t cause any issues.
Today i received my first ever Q8. The screws are very nice at first glance. The thing i did to the light after i got assured that it works, was that i sanded the tube a little to align the tube and the head correctly. The misalignment felt very bad when holding the light. So far i played with the light for an hour and already love the Narsil fw 
More to come probably…