Do you mean shorty 26350 2 Cell tube? I’d be in for a one piece 3 Cell 26650 tube for sure.
It already stated as a 2 cell version. a 2/3 cell driver will raise the driver cost. If somebody need more runtime carry 2 extra battery and problem solved with even more runtime than 3 battery.
Two things.
1. Earlier you suggested high could be up to 4k lumens. Why have you changed your mind and now think it’s too much?
Btw, I did make the high setting a more ambiguous 2500lm to 4000lm (whatever is practical).
2. This is not using NarsilM v1.2. There is no ramp max below 100%. Sofirns ramping is not that sophisticated.
It may be a bit early to talk about different battery tubes. That is something that can easily be machined later on.
It would only raise the driver cost to the person who is buying a 9v buck driver from Lexel or Texas_Ace, etc…
I would not expect Sofirn to build a special driver for 9v use.
I didn’t changed my mind. that 4000 lumens I mentioned about my MF02 setted up but it is not a huge jump from there to 9000. So anything between 2500 and 4000 for high mode I will be happy. If in ramping they cannot make separate turbo it is also OK but it need thermal regulation.
I know Narsil is not on option sorry for mentioning it again.
Here is an updated “design concept”.
The side walls are thicker.
Cool, cool.
I don’t really know what Sofirn is able to program for thermal control. Their newer SP32A v2.0 is a FET driver and is labeled as having Advanced Temperature Regulation (ATR). The C8F is also a pocket rocket. Can someone comment on how it’s thermal protection works? Does it keep the light at safe temperatures, etc…?
And I see now it has a working driver because the led glows 
They sent me a new version SP32A 2.0 last week so I will try and tell it how it works when I get it.
The XHP70 is available in some nice tints at 90 CRI, e.g. the XHP70A-01-0000-0D0UJ445G I have in my Acebeam L30. I’d really like to see options like that rather than just focusing on power. There are plenty of lights on the market that have huge output, but not so many that produce really nice light, especially with higher output.
Looks much better. Is this one gonna be a single emitter or a triple??
Never mind that question… I found the answer in post #1. Single emitter first then possibly triple later. :+1:
Much better, I might make the bottom fin on the right side slightly less deep to improve heat transfer up the head but that is about all that could be done except closer tolerances to the reflector.
Going backwards to the older xhp70 (instead of the 70.2) would necessitate using an OP reflector to minimize the donut hole which means you loose a lot of throw. I don’t think we should go in that direction.
/\ . +70.2 . :+1: … Agreed.
Intensity loss from OP reflectors as I recall when comparisons have been available in the same light is usually less than 10%. The change in beam profile and output would have a much more significant impact on throw than an OP reflector would. I’m OK with that though. The XHP70.2 is ugly and I don’t like it. Of course, an OP reflector mitigates that a bit too, so I think it should have one either way.
On the L6 you loose 20% of the lux between SMO and OP. I have no plans on ever going back to the OP reflector on my light.
The 70.2 does have a somewhat ugly corona, but it doesn’t bother me much anymore. Being able to see much further than I ever could with the old xhp70 is worth the tradeoff.
It seems you would be more happy with a current S70s or L6. Just swap the driver for more output and you are set.
I’d choose extra throw and a yellow corona over less throw and a donut hole/or heavy OP reflector. Hint: the 80CRI versions of the XHP70.2 are not binned very much lower and produce a way more bearable corona, soft yellow instead of lime.
About developing a 9V driver (and about prematurely deciding for Sofirn what they are and are not capable of), as was communicated to me, Sofirn has recently attracted a few new engineers who worked for major flashlight companies before (I did not get more details than that) so tbey may be more capable than we assume.
Hope Sofirn consider the single XHP35 version as a budget 500+kcd after the XHp70.2.
It would have the potential. During the design phase, they just need to make the driver cavity big enough to later fit a 6v to 12v boost driver. The coils can be a bit tall on those.
Speaking of the driver, nothing has been confirmed. I like the goal of 5000+ lumen, but Sofirn hasn’t said much. Is 5000lm capable with a buck driver? I’m not sure. I know a FET driver can do it and more.
I suppose a 30mm driver would also be a good idea. You could make it smaller, but you limit yourself as far as future buck or boost designs.