There is a very noticeable difference in temperature as the light is heating up between the light engine and the head after the threads on the GT. Proof of quite high thermal resistance. Much higher then I expected when we made the GT design to be honest.
In the GT’s case the upper area is not really used / needed for cooling as most of the fins and cooling happens on the light engine. So it is not a big deal.
This light is exactly the opposite with all of the fins being after the threads and with very thin walls / heat path on top of that.
And having fins closer to the LED just seems to be the better way of doing cooling.
Far at the front, large diameter of the head allows a lot of area. But this area it thermally the farthest part of the head and thus every gram spent on cooling here is a worse investment than nearer the LED. And what’s worse - every gram here has much bigger effect on making a light front-heavy.
Wow this light’s got more constructive technical input and discussion than any other light I’ve seen. Jason thanks for all your hard work on this and glad Sofirn is listening. Can’t wait to see the final product. Will surely be amazing.
Also the thought of a future version having 3x 70.2 emitters that throw much farther than the MT09R makes me drool. Maybe TA can come up with a driver for this that can squeeze 18k lumens with 1,000+ m throw
Yes, this is the first I’m hearing of it on the C8F. (BTW, Turbo should be 3500 lm).
I don’t know if they will want to implement that on the SP70 or not. I kind of don’t want it, unless I can adjust it myself, because it means you can no longer set the brightness where you want. I might want 4000 lumen and can’t access it because the ramp only goes up to 3000. See what I mean?
I don’t really want that on the C8F either.
With Anduril you can set your own top of the ramp. At least on the GT and GT mini the ramp is still pretty high, like 80%. That’s not a big deal on those lights.
I find there is very little use for the ramp over 50-60. With a proper ramp setup this takes less then a second for you to ramp from 50 to 100% and it is rare you would even stop in this range. If you did it would hardly be noticeably different then 50% or 100% (the difference from 50% to 100% is not nearly as much as you would think due to how our eyes work, it only appears maybe 40-50% brighter)
I have not heard of anyone with the MT09R’s complain about the 50% ramp, in fact most of them said they really like it and understand it once they see it themselves.
That said, it is more effective on more powerful lights but even on my “smaller” lights I still find I prefer it because they generally can not handle Turbo for very long and it is easier to be able to ramp it all the way up and know I am getting about the best combo of runtime and output without having to play with it. Turbo is only a double click away if I need more light.
Anduril is a good idea as well of course that way people can set it up after the fact.
I guess I like to be in control of the brightness level. That’s why I use ramping instead of discreet steps. I tell it what to do, not the other way around. Lol
I considered having Lexel program a NarsilM driver for me using a limited top of ramp, but I decided against it. What if it was set too high or too low? I would be bothered and would want it reflashed. So I’m okay with having the full ramp. I know how to go turbo, then ramp down just the right amount. As the voltage drops I ramp down less.
Anyway, I did not suggest a limited ramp to Sofirn, so if they do that, it would be an unpleasant surprise for me.
