You stated in another thread,to never attempt to start a mechanical advance gasser at full throttle.I assume this is because full throttle=full advance,which defeats the purpose of having retarded advance for easier starting in the first place.In the case of an electronic advance ,lets say ZDZ, does the throttle position have any bearing on initial starting ease?Before everybody jumps on me yelling safety,I am referring to the full choke,full throttle,ign.on flip til it fires,choke off,throttle to high idle flip til it runs,method of starting.

All electronic systems start in the retarded position regardless of the throttle position..Pro Spark and Reichmuth are timed from retarded to start and then advance..All systems with the syncro spark module are timed at 28 BTDC, and electronically retard for starting, then advance according to the rpm of the crank..when the crank speeds up the ignition advances, like the tail wagging the dog..The carb transition has to be set correctly for fast advance..It all happens in microseconds to there is usually no lag...Don't know about the foreign systems, but they are probably like the ones here, set for 28 BTDC static and retarding with the first few flips....
Full choke is relatively safe, because the engine won't run very long with the choke on, although it will choke just as well at just above idle...

Anothe tip Kevin
You state "FULL throttle" when flipping with the choke on. Instead try - Switch OFF, full throttle, choke on, turn over or flip engine til fuel starts to run out of carb - THEN - fast idle, Switch ON, choke on, flip til it sputters, take off choke, set throttle at idle or a little above, flip to start. Never flip with the switch ON and throttle at full.

I read an explanation of the CH ignition operation on the GSAL list. The CH synchro spark is full advance if the rpm is less than some minimum value (150 rpm, I believe). This way you can set the timing at 28 degrees BTDC - statically. But, it also means you shouldn't slowly move the prop when the magnet is near the Hall sensor with the engine ready to run. You'll get full advance.

The Falkon ignitions on the ZDZ, are set up in the full retarded position statically. These igntions advance only with increasing rpm, so slow turning of the prop will not cause full advance.

The DA and 3W ignitions use a pickup coil (not a Hall sensor) and will not spark at all below a certain critical rpm as a safety feature. So, you need a healthy flip or you won't get any spark. If the ignition box is working properly, the timing will always be retarded during starting.

Thanks for the input as it confirmed what I thought to be the case.
The Falcon ignition has one other little wrinkle to catch the unwary,and that is an automatic shutdown of the black box if the switch is on and there is no movement past the sensor for one minute approx.You must then close and re-open the switch to reset the unit.

Minor correction: SS is still in full retard at ~150 RPM. From ~150 RPM on down it increases in advance until at 1 RPM it is at full advance. Your caution is valid, nevertheless.

Anytime an engine ignition is ON it should be treated with the same awareness as a running chain saw.

-ed