Very late look at the Zanflare F4

[beam0]

@DB Custom

I can’t budge the tail cap, I have large strap wrenches and gave it a pretty good go, got my neck hurting, but nothing doing. The springs on the tail pcb are large and long, would benefit substantially from bypasses I’m sure…

@DB Custom

On 4 cell parallel lights like this, I tend to completely remove the pcb with springs and solder better springs with bypasses directly to a thick copper disc, screw that back in for maximum ground. Don’t see the need for traces on a pcb at that junction, but that’s just me probably.

Sorry for off topic but do you remember what it took to get the tail cap removed on a BST? I haven’t tried anything yet but I’m hoping a heat gun and strap wrenches will do it. I need to run bypasses and also look into doing your copper disc mod.

[DB_Custom (Dale)]

beam0, I’ve had it off as the springs are bypassed but I can’t budge it now. Pre-surgery and post-surgery, guess I’m a wuss now.

[DB_Custom (Dale)]

David, I put a solid copper disc in my Q8 and soldered the springs on, then screwed it down with brass screws. Had it really singing! Sold it though, to fund something I really really wanted…. and so it goes.

Tested it with the cells that were sitting in it when I sold it, sent the cells with it, it was making 10,902 lumens out the front with SST-40’s.

[beam0]

@DB Custom

beam0, I’ve had it off as the springs are bypassed but I can’t budge it now. Pre-surgery and post-surgery, guess I’m a wuss now.

Thanks, at least I know it’s threaded.