ORIGINAL: flyrc100
This is to W8ye's Post-I agree the timing (total at WOT) should be around 30 degrees, but that does not mean you should set it up there, does it? Should it not idle at 4 degrees (or so) and automatically advance to 30 degrees as RPM increases?
It depends on what kind of ignition unit you have, some are auto advancing, and some are auto retarding. Most of the EI setups I have are auto retarding, so the base timing is set at 28 degrees. I think my ZDZ engine is auto advancing, it is the only engine I have like that.