Al, I did read about the mod on the optical kill switch after you mentioned it in your post. At the stage I'm at with the parts that I have already purchased for the plane and engine I am building now, I don't see a benifit. If I understand correctly, the mod would allow me to only need one manual switch and one battery. Wouldn't I then need a larger capacity battery if it is then supplying two circuits?
If you think my setup for now won't work, please let me know.
I have one last question. I thought that I read in Gas Engines for Newbees, that the ignition battery couldn't exceed 4.8 volts unless you had a voltage regulator. My Rexel ignition unit shows a voltage range of 4.8/ 8.4 DC volts. Does that mean the newer units have changed? My new engine came with the Rexel ignition, but no manual
Lamar