I have a real fear of rotating propellers and blood. I read an article describing an on-board battery used to start a glow engine. The author claimed he left the battery on all the time when flying.

Then I did some searching and found three commercial (Glowlite 103, MX-9900 by Hobby Racer and one by Nelson Hobby) systems that turn the battery on when required. The prices start at $39.95 but when you add in all the stuff you really need it is a lot more.

Then I found a "do it yourself" article using a switch driven by the throttle servo. It looks easy???

I would like input, positive or negative from anybody that has "been there done that"