- Feb 3, 2003
- Reaction score
How exactly do flashbulbs work? Do they explode or just create a lot of heat? Thanks!
Just don't try this with composite motors.Originally posted by powderburner
I stand the motor (I use BP motors) bottom-up on a workbench, fill the nozzle with loose blackpowder or aluminized flash powder (one firecracker's worth is just about perfect) and place the flashbulb directly on that. Then I cover the whole bottom of the motor with masking tape, leaving the leads to the flashbulb sticking out. Reliability, for me, has been 100% in several dozen tries----works well to get clusters triggered simultaneously, especially if the launcher's ignition system does not have an auto battery to ensure lots of amps. Biggest problem is finding usable flashbulbs.
Absolutely.Originally posted by Ray Dunakin
Just don't try this with composite motors.
If you mean removing the bulb from the plastic cube/packaging, it's OK to remove the reflector from behind the bulb.Originally posted by Elapid
i assume you break away the plastic covering the Magnesium?
"Back in the Day" (8-12 years ago when I was active in HPR) we used flashbulbs extensively to ignite ejection charges, though I never used them for ignitors. They were definately not the "cube" type flashbulbs, but looked alot like a small flashlight bulb.Originally posted by Stewart32
but, are we talkintg the instamatic style flashcube flashbulbs here (ie Bluedot)
That's what I thought - but I wanted someone to re-assure that. Thanks!!!!!!!Originally posted by PopRocket
Fore Check, they are single use ejection charge canisters. To use them you simply pour the appropriate amount of black powder (based upon tube volume) into the cardboard tube and then push one of the sticky paper discs down on top of the powder using the little wooden rod that should be included with the kit. The idea is to seal the tube and keep the black powder in contact with the flash bulb which is installed in the bottom of the tube.
I have used these extensively in the past with a 100% success rate.