12v Glow Plugs?

[Keith Medlkock]

Hey guys, I was static testing a new motor. I had a few Estes igniters laying around so I soldered one to some lead wire(so it could make it to the back of the motor), and encapsulated it in a section of straw with .1g of smokeless powder.

Watching the slow motion replay of the test, I noticed the Estes igniter exiting the nozzle intact. Apparently, it took less to less heat to light the smokeless powder than would destroy the nichrome wire.

On to my point, this got me wondering if any of you use a reusable glow plug to light your motors instead of disposable igniters. Obviously, this would be very easy with 120vac line, but what about 12vdc?

 

[ksaves2]

Glow plugs cost a lot and the filament might get mechanically destroyed. There was an ejection device out there for awhile that used a glow plug to light the BP for a deployment charge. I don't think they sold very many of them.
Kurt