Sunday, September 21, 2014
Onan gets an ignition box installed
Installed a Crane HI6-N ignition box on the Onan generator. The HI6-N was an Ebay bargain and uses a magnetic trigger, same one we had triggering an HEI module previous. I have it driving a GM DIS style wasted spark coil with the spark gap set at .045. We found the Ford crank sensor had a very high output and a pair of 47K resistors one on each leg of the sensors output tamed it down to where the Crane box would trigger. I think the high output is because of the diameter of the trigger wheel (flywheel pin) which is much larger than its original application. Relative velocity difference and all of that.
Movie of it starting and running. Seems to be smoother running, or maybe just my imagination.