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02-04-2017, 01:18 PM
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Join Date: Jan 2017
Location: USA
Posts: 1
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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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02-04-2017, 02:57 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,769
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CAREFUL!!!!
Quote:
Originally Posted by Bush Dog
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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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.
__________________
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>
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02-04-2017, 03:14 PM
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Join Date: Mar 2010
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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02-04-2017, 03:57 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,769
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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.
__________________
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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02-04-2017, 08:59 PM
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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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02-04-2017, 09:04 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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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!
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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