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Old 09-19-2022, 07:37 AM
Blastfromthepast Blastfromthepast is offline
'nother Old Fart BAR....
 
Join Date: Dec 2011
Location: Castle Rock, Colorado
Posts: 381
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Hi, Jeff,
Thanks,
I can answer a few of your questions.
Jim Gazur was the only one who used the MJG starters. The preflight photo shows that the leads for all 7 motors were twisted together into two harnesses, one for each battery pole.

My Canopus-2 model (red and yellow) used standard Estes starters. By the way, that model is my own design and was published in a 1987 issue of The Model Rocketeer magazine.

The launch controller built by Brock Wood uses a relay system connected to a standard controller. The relay activates a secondary system that consists of a small 12v motorcycle wet cel running through a short section of wire terminated with a four-lead-set clip whip.

As for the gap staging, my Cherokee/Icarus has three vent holes punched in the front of the booster tube. They are in the black section and might not be visible in the photos.

I'm not certain how Jim's upscale modified Alpha is vented, but I suspect the presence of vent holes in the booster motor centering rings
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