ORIGINAL: DarkWingDuck
Thanks, Milton. Yes, I am aware of the CH timing instructions. Where the confusion comes in is that the instructions that I have for my setup has the timing is set at a whopping 40 degs advance. However, once the engine starts it runs well and shows no sign of preignition.
Just onto another subject, how do these (RCEXL and CH ignition) units handle the automatic spark advance? Am I correct in my thinking that after the first flip the ignition goes back to perhaps 2 to 3 degs advance for starting and then goes to a full 28 to 30 degs after about 4000 rpm?
Even with a heavy glove, I am getting tired of getting whacked. My little pinkie still hurts.
Dave G.
My test results:
The ignition measures the time the magnet is under the sensor to set the ignition delay.
Above 500 rpm, delay is a full 22 degrees up to 1500 rpm, when delay tapers of to NIL at 4000 rpm
Of course, when turned over slowly, there is no delay to speak of.
Set your ignition anaywhere between 25 and 30 degrees for good engine power.
Do not lazily flip the prop. It WILL kick back due to full advance.
When you flip, you have to mean business, and it will not need a glove, because timing is reduced.