Gents
I think you miss read me. There is a world of difference between wind milling and inertia keeping a propellor rotating.
Kingy, is this different props on the same engine? Same compression ratio?
I once trailored my aircraft, in its pre hangar days, without tying off the prop. At anything above 50mph road speed, it would wind mill. This is a wooden prop. I am 100% sure that a composite or metal prop would have wind milled almost as well, subject to sufficient airflow over their narrower blades. This has nothing to do with inertia.
When parked up after a flight and you switch off the mags. The time it takes the prop to stop has everything to do with inertia. Its not normally very long, certainly not long enough to mess about changing tanks.
