[PART 1] Official BLF GT Group Buy thread. Group buy officially closed! Lights shipping.

Either way you would still need to have custom battery holders made…. in which case you should just make them parallel anyway.
Being able to put all 4 at the back is why people want a double long tube in the first place, for balance.

Possibly wouldn’t even need carriers. Bore the battery tube with 2x ~26.5mm wide openings side-by-side. Have a rotating tailcap (Olight x7 style) so the springs stay in the correct place.

Not sure if I’m right but running 4 would be 4s1p,
running 8 you’d have 4s2p???

If you look at the weight of the head you are probably right. With the 3D CAD program it’s possible to calculate the weights of the pieces. The battery weight of one 18650 is between 44 and 48 gram.

That sounds overly complicated for a budget light…
The tube would also need to start as a solid chunk of aluminum rather than just an aluminum tube which is cheaper and easier to finish.
Also, added weight.

Dunno about complicated as such, but yeah I agree on the aluminium thing. It’d take a huge chunk to make each one - but think Courui D01 - they must have been chunks bored out. And their price point isn’t premium

Being able to put all 4 at the back is why people want a double long tube in the first place, for balance.

What people? Need to get the facts straight, this was never voted on or polled - but dictated to us BLF member’s.

Or am I wrong?

100% right. I was almost going to say exactly what you said.

Sure,the big reflector is forcing me :beer:

Regards Xandre

I hear ya it’s gonna be sweet :+1:
And the fact it’s designed by peeps on here - that’s awesome

“Make things as simple as possible, but not simpler.”

Also add me to the interest list

OP updated

Yes thatBoss1 has a nice beam profile and a scaled up reflector like that would fit the render of ar right?
Didn’t hear back from the reflector software peple, but o course t is holida season in the US so all things like that will probably be taken to next week.

Please put me down as interested, cause I surely am. :+1:

:wink:

will do later!

Here the boss with XHP 35 ca 400 Meter:

but I want more.

Regards Xandre

I really think we should go with a buck driver or a linear driver like the ld-2.
Do we know what happens when you hook a xhp35 up to a 4s2p setup using a fet driver?
Will it kill the led?
Though I’m not sure if a buck driver has enough voltage overhead to work properly when the cells discharge?

XHP35HD (E21A 6500k IIRC) De-domed- Mtn Max 4S special built driver, 4SK70 carrier, 4 VTC5’s burn in at 1 minute mark….

The set-up

Sweating bullets! :person_facepalming:

I just awoke thinking/dreaming this question:

Two 4s1p high drain 18650 carriers in parallel becomes 4s2p. One carrier is fully charged (16.8 volts) and the other is depleted (12 volts). If these two carriers are installed in the GT, the voltage would try to equalize as quickly as possible.

Is this safe?

Lets be serious here, nobody will use it with 8 cells.

8 cells are too much i think .
weight (with cells inside) and charging 8 cells , are the 2 things i think most (as an “issue” for me) .

People keep whining about wanting a short tube yet when we showed you want it looks like it was unanimous that it was stupid looking and horribly unbalanced.

The only fixes for this that people had while keeping it a hand held light was to extend the handle to improve balance both cosmetically and weight wise.

Thus putting us right back where we started. If the handle will be extended for balance anyways, why the heck would we not allow it to be used with 8 cells?