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  #11  
Old 06-07-2024, 09:55 PM
ghrocketman's Avatar
ghrocketman ghrocketman is offline
President, MAYHEM AGITATORS, Inc.
 
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Location: Nunya Bizznuss, Michigan
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For composites, grind up common fireworks sparkler material and mix with the Duco cement for a much hotter pyrogen dip. Has always worked for me.
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  #12  
Old 06-08-2024, 07:34 AM
NOLA_BAR NOLA_BAR is offline
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Quote:
Originally Posted by SolarYellow
I haven't had a BP failure yet, even with the clear-tipped Estes ignitors, on single-motor rockets. The early-teenage godson has messed up a couple installations, but mine have all gone well.

I'm thinking about up to 7-motor clusters, though, where it's not just critical to light them, but to light them all really close to the same time. Reckon anything simple and cheap that I can do to improve the odds is worth checking out.

I can definitely mix a bit of Duco + 4FG without spending another dime or very much time. Will try.


My procedure for BP cluster is to dip them in my pyrogen mix, check each ignitor with a multimeter for an ohm reading and use those that are the same or very close. Install the ignitor using the Estes plugs.

I use a clip whip/harness to hook up all the ignitors to the power leads. You can make your own, I purchased mine from Rocketarium.

Our club has a 12-volt relay launch controller, so plenty power. Pay attention to all the ignitor leads and all those clips. Keeping them apart so they don't short gets to be a problem. Also, a lot of heat and flame comes out the back, basically melting the harness wires.

Cluters are fun! Good luck!
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