Biggest Boost Glider

The problem is the internats team wants a B2. Any innovative igniter ideas short of pre-install?

Reply to
Jerry Irvine
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For the small Apogee composites, I've used igniters made out of enameled magnet wire: I started with a length of wire, stretched it out straight, and folded it double. Then I put the loop over a fixed anchor point, clamped the other end in the chuck of a small electric drill, and spun it until I had a length of tightly-twisted pair. I cut off the looped end, and connected the other end to my DVM on the "ohms" setting. I pulled the free end through a small folded piece of sandpaper to remove some insulation from the outside of the twisted bundle, and then dipped this in Igniterman conductive primer. Cut off to convenient length, sand the end of the remaining twisted length, dip, and repeat. After conductive primer is dry, dip igniters in gray Igniterman pyrogen.

The DVM permits monitoring the process: if all goes well, it shows a brief short-circuit as each igniter is cut off the twisted length, then an open-circuit until I dip the new sanded end it into the primer. (The resistance of the dipped end starts high - a few hundred ohms or so - and then drops down to a few ohms as the solvent in the primer starts to dry). I didn't have any troubles with short circuits at the cut end, but if I had, I would have seen it on the meter before dipping.

-dave w

Reply to
David Weinshenker

You make the igniters and I'll make the motors and the NAR BOD will declare the operational system banned :)

Reply to
Jerry Irvine

Have you noticed the NAR president does not reply to messages I post here specifically addressed toward him?

Reply to
GCGassaway

And that you as a BOTmember also know you are illegally asking for LEUP from members, vendors, manufacturers, whether by actor by omission.

Reply to
Jerry Irvine

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