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  #1  
Old 02-04-2017, 01:18 PM
Bush Dog Bush Dog is offline
 
Join Date: Jan 2017
Location: USA
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Default Hand Proping 14A/IO390

The cold engine pre-start was completed, key to start but the prop barley moved on several attempts. Low battery charge. With brakes held and switch OFF, Co-Pilot pulled the prop through several times from front of aircraft. With key to both, brakes held and Co-pilot BEHIND the prop, the prop was pulled downward and immediately started. If you get stuck, Its worth a try!
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  #2  
Old 02-04-2017, 02:57 PM
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Mel Mel is offline
 
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Location: Dallas area
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Default CAREFUL!!!!

Quote:
Originally Posted by Bush Dog View Post
The cold engine pre-start was completed, key to start but the prop barley moved on several attempts. Low battery charge. With brakes held and switch OFF, Co-Pilot pulled the prop through several times from front of aircraft. With key to both, brakes held and Co-pilot BEHIND the prop, the prop was pulled downward and immediately started. If you get stuck, Its worth a try!
Before you try this make sure you understand the ignition system. This works fine with 2 impulse mags. BUT, if one mag is NON-impulse type, the engine can easily fire before top dead center causing the prop to kick back and severely injure your hand. On a "typical" system where only the left mag is impulse, the switch should be in the "left" position.
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EAA Flight Advisor/Tech Counselor, Friend of the RV-1
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RV-6 Flying since 1993 (sold)
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  #3  
Old 02-04-2017, 03:14 PM
luddite42 luddite42 is offline
 
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Location: USA
Posts: 454
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If this post was intended to inform those who have never thought about, learned about, or attempted hand propping of the fact that hand propping is indeed possible, then a very strong dose of caution is needed. Thank you Mel for the post. And there is much more. The most dangerous hand propping situation is that of becoming stranded with little knowledge or experience with hand propping. Please learn about hand propping safety before considering an attempt.
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  #4  
Old 02-04-2017, 03:57 PM
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Mel Mel is offline
 
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Location: Dallas area
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Like Rick says; I put hand propping in the same category as aerobatics. Neither should be attempted without proper training.
My first airplane was a 1941 T-Craft where hand propping was the norm.
Most propping accidents happen to inexperienced people, and the airplane has a starter.
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Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>

Last edited by Mel : 02-04-2017 at 04:00 PM.
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  #5  
Old 02-04-2017, 08:59 PM
RVmaniac RVmaniac is offline
 
Join Date: Aug 2015
Location: Boca Raton, FL
Posts: 7
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A few people have died from hand propping after they lunged forward into the prop putting too much effort into it. Please be careful.
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  #6  
Old 02-04-2017, 09:04 PM
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N941WR N941WR is offline
 
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I might add that if the plane has a three bladed prop, just don't do it!

Not that I would prop an "A" with any type of prop!
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