How Many Joules Through The Coil?

Moderator: Mike Everman

Post Reply
Mike Kirney
Posts: 517
Joined: Fri Oct 03, 2003 11:11 pm
Antipspambot question: 0
Location: Round Lake Centre, Ontario, Canada

How Many Joules Through The Coil?

Post by Mike Kirney » Wed Dec 06, 2006 5:45 am

So I have all this black powder and I have been thinking about building a small rocket with some. I would like to create an electical ignition system using perhaps a battery, a capacitor, and some sort of resistance-type heating element. Has anybody built something like this?
Trig IS fun.

Posts: 187
Joined: Thu Nov 11, 2004 12:48 am
Antipspambot question: 0
Location: Washington State, USA

re: How Many Joules Through The Coil?

Post by Ray » Wed Dec 06, 2006 1:42 pm

Estes has...minus the capacitor.

BP is tough to make into a rocket motor. It needs to be very finely ground and packed at a high pressure. All of this makes it rather dangerous to do. Shocks aren't good for it, it can ignite. Once the motor is made there is a high likelihood that it'll have voids in the grain and it will CATO.

If you store the motor, watch for temperature cycling, it can crack the grain.

Post Reply