My first host has xp-l2's doing over 5k running NarsilM of course, DEL 17mm driver. Had a short problem but coated the shelf with epoxy -- fixed it
My vote is 26700 - accommodate both 26650 and 21700. The 30T is the real deal. Incredible in a modded SD26 - over 2300 lumens.
Hey TomE… What is the “DEL” 17mm driver? Also, do you recall the emitter bin, etc. ? I have two more of these to build (I have six total)
— and have used Arrow’s XP-L2 V6 (E2 i think) and shaved XP-Ls (also from arrow) on these first four.
Thx
Also, TomE… did your short problem cause your driver to not ramp down by chance??? I have a few drivers from Lexel I’m having problems in this host with— they won’t turn off or ramp below about 25% (or so) output; so we are wondering why still. Just a long shot to ask you here. Thanks again.
Hey, Tom E is back!
It’s been like 3 or 4 months. What have you been up to?
Sorry bout this...
You can find DEL's 17 mm OSHPark driver in DEL's driver thread - always bookmarked by me, best drivers, he's the one originally coming up with the driver designs used in the Q8, GT, used by TexacAce, Harley, Lexel, etc, etc.... DDm-17 driver here: https://budgetlightforum.com/t/-/44006
Ye - think I'm using the same LED's from Arrow.
Hhmm, no. With the short problem, just wouldn't turn on only when mounted. Worked fine dangling in air. The clearances are extremely tight cause the driver's ledge is a bit too wide, or the driver SMD's mounted too close to the edge, one or the other or combo of both. The retaining ring provides solid contact so the underside ground ring connecting to the shelf is not needed.
Sounds to me like the 7135 is always ON. Weird - dunno enough bout the driver design, build, or exact firmware rev so can't help much.
Dunno - looked on OSHPark for Lexel's drivers - no hits. Either he doesn't make them public or is using another service - dunno.
Does anyone know where I can get an original (1st gen) C8F with the mechanical tail switch?
Thanks,
Caleb
Ohhh - I'd suggest un-doing the driver retaining ring, pulling out the driver and see if it runs ok when dangling loose - rig up a battery. If so, then the problem is related to the mounting. At first I tried kapton tape but it was a total pain to get it situated and to stay in place, so that's why I went with the epoxy. The epoxy I use is 5 mins fast drying and can take heat well.
Super thanks for the thoughts and ideas TomE :+1:
Hey Tom, if you don’t mind, go back through your old PMs and find the ones I sent you. It’s about that q8 of mine that I sent you to modify way back in October of last year. Back then you sent a pm saying you were finished with it and the output was excellent and you even fixed that fluctuation of output amounts (which I knew nothing about since I don’t have access to anything able to test output). I know your life is likely every bit as hectic and unpredictable as mine is and it’s very easy to overlook things(especially since in your mind those mods were finished and you started something else and forgot to ship it back to me. Thanks for your time. Cheers
Well its depend. If we are going to use 21700, we should make this light powerful. Max power… because we have a great 21700.
Huh I didn’t think about this.
If we use a 30T in the light, what kind of emitters are we going to use so they do not get burned with very low resistance connections and a 40A cell?
Or, are we waiting for a 50W boost driver in the works to boost to 9V and put the emitters in series :smiling_imp: ?
Would be quite nice in a 17mm form factor too.
DB CUSTOM said these 3 xpl will survive with a 30T. See here.
The 40T might be the better choice for this light, though since we don’t need that much current. The higher capacity should give longer run time.
- 21700
- dual switch
- aggressive knurling on tube
- no flats on tube to allow for thinner tube
- big deep single emitter reflector
- thick LED mounting shelf for good heatsink
- compatible with stainless convoy bezel
- tailcap with 3 thumb recesses instead of 2
- optional all stainless tailcap
- finned head
Hold on, they are not asking for suggestions for a whole new light. Lol
Sounds like a regression to the mean, cncyana, with a couple extra large cup-holders thrown in.
There are a fair number of options for single emitter hosts. True, most of those aren’t for 21700 hosts, but at this point, there are more single emitter 21700 hosts than there are three emitter 21700. Besides, what set the C8F apart in the first place was that it was a triple.
Quite frankly, the head could be pretty much left intact except to bore it out where the battery-tube screws into it.
Then, just make the tube ever so slightly wider to fit a 20 or 21, and widen and bore out the tailcap to match. Done. It’ll now take a 20 or 21 instead of an 18.
I reported Sofirn all the suggestiopns a few weeks ago so now it is only up to them what they coming up with.
Hi all!
I got a message today from Sofirn. 21700 chosen. That is confirmed. And the driver size will be bigger to make modding easier. They want dual switch but it is not decided yet. Maybe it will be dual switch or switched tailcap can be bought separately. They told me there will be some changes in UI but I don’t know exactly the changes yet.
:+1: … Thanks for the update. 