Originally Posted by
WorkingHard
Duncan -"has the battery been disconnected on this ac etc...?"
The engine runs from MAGNETOS therefore does not need a battery.
Correct, BUT....
The battery is wot powers the starter motor wot turns the prop. A turning prop, going over compression even without firing is likely to give the recipient's head a nasty lump. It would take a faulty relay to cause it to motor over by itself, a pretty unlikely scenario.
I wouldn't personally get my pants bunched up my bottom over the photo.
P.S. ~ Instructed on that type for a few years.