Originally posted by billmi
How much voltage/amperage should I use to drive the glow-plug? I'd just clipped on my model rocket launcher (9v battery source) since it was near my workbench and had aligator clips.
Step away from the 9v batteries! The Cox glow heads are designed for 1.5 volts. If your 9v was any good, that glow head is now toast and you'll have to get another....sorry!
You can get a couple of D-size flashlight batteries and wire them in parallel (pos. to pos., neg. to neg.) to make a good starting batt. I use a 5AH nicad D battery so I can recharge as needed. The Coxes require a good bit of amperage to fire up; especially in cold weather.