soyAnarchisto
MEMBER
Boulder, CO
Perhaps the Continental O470's have a different governor or a different behavior than the CC363i, which is what lycoming based? And what prop are we talking? the 80" trailblazer - two blade right?
I dunno. But if you would like a ride in a 180 with an 88" seaplane prop, you can see it demonstrated rather dramatically. Pull the prop back with the engine at idle and the drag reduction and extension to glide is tremendous. And of course, there's no mention of doing this in the engine out emergency procedure. Of course this is 1955 so the emergency check-list is pretty much non-existent.
I figured this out real quick in practicing my commercial maneuvers prepping for a check ride. A power off 180 with pulling/feathering the prop back is pretty normal landing. But if you leave the prop full fine, you will drop out of the sky like a brick... a mushing brick but a brick nonetheless. I assumed all airplanes were configured to go full fine when you lose oil pressure - but that sure is not good for best glide.
What's supposed to happen when you are "below governing speed" on the rpms? Does it go full fine, or full coarse? Or does it somehow magically stay in whatver position it was in when you pulled the manifold pressure back to idle?
If my governor is not working correctly, I'd sure like to know it. It is in annual and I flew it with my IA aboard noting this behavior during my annual. Seemed totally normal behavior to me. I admit I didn't get to do the exact same experiment in the FX3 I flew last summer.
I dunno. But if you would like a ride in a 180 with an 88" seaplane prop, you can see it demonstrated rather dramatically. Pull the prop back with the engine at idle and the drag reduction and extension to glide is tremendous. And of course, there's no mention of doing this in the engine out emergency procedure. Of course this is 1955 so the emergency check-list is pretty much non-existent.
I figured this out real quick in practicing my commercial maneuvers prepping for a check ride. A power off 180 with pulling/feathering the prop back is pretty normal landing. But if you leave the prop full fine, you will drop out of the sky like a brick... a mushing brick but a brick nonetheless. I assumed all airplanes were configured to go full fine when you lose oil pressure - but that sure is not good for best glide.
What's supposed to happen when you are "below governing speed" on the rpms? Does it go full fine, or full coarse? Or does it somehow magically stay in whatver position it was in when you pulled the manifold pressure back to idle?
If my governor is not working correctly, I'd sure like to know it. It is in annual and I flew it with my IA aboard noting this behavior during my annual. Seemed totally normal behavior to me. I admit I didn't get to do the exact same experiment in the FX3 I flew last summer.
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