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| | Joined: Feb 2004 Posts: 5,975 Member/5000+posts! | | Member/5000+posts! Joined: Feb 2004 Posts: 5,975 | | | | | | Joined: Dec 2003 Posts: 14,789 Likes: 546 Member/10,000+ posts! | | Member/10,000+ posts! Joined: Dec 2003 Posts: 14,789 Likes: 546 | The Cessna Aerobat Spin video raised a question. I take it that stopping the engine during a spin is not SOP. Would you mind explaining what happened? It's actually in the POH. Words to the effect that 'during prolonged spins with half tanks or less, engine stoppage may occur. But this does not adversely affect spin recovery.' What happens is the fuel slugs outboard, uncovering the pickups in the tanks. I think Catherine said it takes about 13 turns before the engine will stop.
-Kirk Wennerstrom
President, Cessna 150-152 Fly-In Foundation
1976 Cessna Cardinal RG N7556V
Hangar D1, Bridgeport, CT KBDR
| | | | | Joined: Jun 2006 Posts: 7,145 Likes: 204 Member/5000+posts! | | Member/5000+posts! Joined: Jun 2006 Posts: 7,145 Likes: 204 | The engine in a 150 tends to stop after 5-6ish turns. In a 152, it tends to be in the 13-16 range. | | | | | Joined: Aug 2010 Posts: 5,193 Likes: 258 Member/5000+posts! | | Member/5000+posts! Joined: Aug 2010 Posts: 5,193 Likes: 258 | Facts I would never ever have known! My limit is 1/2 a spin. Is 1/2 a spin technically a spin??
Does "prop windmilling" restart the engine?
Good wife, good friends & a Cessna 150. Life is good.
Terry Monday
1976 C150M N9463U
Greenville, NC
| | | | | Joined: Nov 2014 Posts: 195 Member/100+posts | | Member/100+posts Joined: Nov 2014 Posts: 195 | Facts I would never ever have known! My limit is 1/2 a spin. Is 1/2 a spin technically a spin??
Does "prop windmilling" restart the engine? It sure does! The cylinder doesn't know or care if the stater motor is turning the crank, some meat bag pulling on the prop, or the wind rushing past the prop. | | | | | Joined: Jul 2004 Posts: 21,771 Likes: 2272 Member/20,000 posts | | Member/20,000 posts Joined: Jul 2004 Posts: 21,771 Likes: 2272 | My limit is 1/2 a spin. Is 1/2 a spin technically a spin?? One needs to direct that question to someone with experience.......I'd ask Poobs.  Jim
Cessna 150/150, N2259M - Mighty Mouse
| | | | | Joined: Jun 2004 Posts: 35,570 Likes: 565 DA POOBS Member with 30,000+ posts!! | | DA POOBS Member with 30,000+ posts!! Joined: Jun 2004 Posts: 35,570 Likes: 565 | My limit is 1/2 a spin. Is 1/2 a spin technically a spin?? One needs to direct that question to someone with experience.......I'd ask Poobs. Jim The answer is a (screaming) yes.
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Join the Popular Front for the Reunification of Gondwanaland. | | | | | Joined: Aug 2010 Posts: 5,193 Likes: 258 Member/5000+posts! | | Member/5000+posts! Joined: Aug 2010 Posts: 5,193 Likes: 258 | So the prop continues to turn after the 13th (that's unnatural) spin but the engine dies due to lack of fuel. The engine re-starts when fuel flows to the engine once the spinning has stopped?
Good wife, good friends & a Cessna 150. Life is good.
Terry Monday
1976 C150M N9463U
Greenville, NC
| | | | | Joined: Dec 2003 Posts: 14,789 Likes: 546 Member/10,000+ posts! | | Member/10,000+ posts! Joined: Dec 2003 Posts: 14,789 Likes: 546 | So the prop continues to turn after the 13th (that's unnatural) spin but the engine dies due to lack of fuel. The engine re-starts when fuel flows to the engine once the spinning has stopped? Usually. Sometimes the prop stops windmilling since a spin is a relatively low-speed event. Diving after the spin recovery gets the prop spinning again.
Last edited by Kirk; 12/05/15 11:04 PM.
-Kirk Wennerstrom
President, Cessna 150-152 Fly-In Foundation
1976 Cessna Cardinal RG N7556V
Hangar D1, Bridgeport, CT KBDR
| | | | | Joined: Nov 2014 Posts: 195 Member/100+posts | | Member/100+posts Joined: Nov 2014 Posts: 195 | Sold!
On the way to Paraguay, in the southern hemisphere the direction of spins will be opposite my video. | | |
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