Hi,
Made a batck of simple igniters with a firestar kit just for some Estes motors. Used some of the Ted Pella nichrome wire and was using some of the leftover colored Estes igniter retainers. I actually gobbed the pyrogen on thickly. It makes for an impressive igniter test but they are actually turning out as duds for me! What I think is happening is that the pyrogen starts to ignite, the plastic retainer melts and the engines fail to fire! I am going to try masking tape next time. I didn't have any when I launched last weekend so I used up some of the stock igniters for launching. I notice on the stock igniters that there isn't that much pyrogen on the wire and they work just fine. Am going to dip a batch to resemble the stock ones and see if that eliminates the problem. Does this sound right?
Kurt Savegnago