Cool vid VOB!!
Yes let me clarify the cells and carriers for the GT
With a head this big and heavy it needed balancing. like if you pick up a long heavy tool like a sledge hammer, holding it while walking to the place you want to use it, easiest is to carryit in such a way the weight is balanced, holding it at the end far away from the heavy metal hammering part makes if very hard to carry.
So we needed 4 cells to get to the desired voltage.
And now the carriers connect in parallel, meaning one can use it with 1 carrier empty, preferably the on closest to the head and the GT has a nice balanced weight.
If one needs maximum runtimes it can work with 2 times 4 cells doubling the time one has to play with it between charging.
About comparison with TN42 (vn or not)
It is really cool, a lot of smart people did a lot of calculations for the reflector.
Based on the simple spec 120mm at the widest.
In the end the ideal depth was calculated via different methods (and we needed to know the depth in order to design the head around it)
It is less then 0.5% the same ratio as the TN42 reflector IIRC
Very cool IMHO that a bunch of enthusiasts calculate and get this close to the reflector the reigning LED reflector based throw king (at that time
) had.
The GT used in the video is a prototype with a prototype reflector, Lumintop has smoothened the reflector surface more, so the throw we see on the prototype is less then on actual production.
I think it is safe to say, there is no way a TN42, K70 or BK-FA09S can beat the GT in throw with just their reflector.
And for longer time use, the TN42 is too unbalanced for me. I had to do things I needed light at greater distances, I wanted to dump the TN42 for a modded Courui D01. it is easier to carry, the TN4 is too front heavy for anything longer then half an hour, so even on that regard I think the GT might be more practical.
I ended up hanging a S2+ at the tailcap of the TN42 to balance it out better, which worked out OK