I had a 6S battery. I can't remember the other details but the smoke only ran for 4 minutes. I recently switched to a 2S and while the smoke is much thinner, it runs for 40min.
I'm very interested in how you added the flame. I like that there is no lighter fluid involved I've worked with flash paper before in theatre, so I'm curious what is igniting it and how it's all rigged up. Are you planning on making it more accessible for reloads? One shot is cool. More than one shot is cooler
Hey DP, the charges are fired from these little dolls, https://www.amazon.com/HOODDEAL-prin.../dp/B01EX5F6WE called electric matches. I made a bundle of flash paper wrapped gun cotton with one of those at the base which then slip into the flamethrower nozzles. You can see two primed for loading in this shot:
The wires pass through a home made cork that seals the back of the nozzle (that's the real secret to not setting my arm aflame), then the ends clip to alligator connectors inside the housing to deliver the power. I have the circuit "armed" when the red light on the gauntlet is activated, but I'm currently stuck launching both since I wired them to fire simultaneously from both of the switches on the housing (need to press both down to fire, a "safety" feature). So the charges can be premade and carried for reloading, but then the wires need to be passed through the corks, and that requires complete removal of the gauntlet and removing the housing's bottom to access the corks in the backs of the nozzles (at least until I can train my handler properly ).
When firing, I found in several tests before my final assembly that the effect is super dependent on the packing of the gun cotton. Loose, even without the flash paper sleeve, gives a nice flame burst from the nozzles, but it's pretty short. Very tight, using probably double the amount as seen in the video above, and the charge actually shoots out quite a ways (maybe 6 feet) before combusting, but it's much less like a flamethrower at that point.