They ran the old battery ignition racing outboards on a 7-1/2 volt Hot Shot battery. (five 1-½ volt cells ) You have to remember to turn off the ignition if the motor stops by retarding the timing. If when stoped one of the points happens to be closed, the battery will discharge through the coil and may burn it up. The Elto’s Atwater Kent ignition won’t do that. It only fires when the crankshaft is turning.
