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Old 10-14-2021, 10:23 AM
Ranger Ranger is offline
Join Date: Aug 2009
Location: La Grande, Oregon
Posts: 34
Default Prop Orientation 0-290 D2

Rich Pulman,
Page 7-1 of the Lycoming Manual for the 0-290 says this about prop orientation:
"Propeller Installation Consult the airframe manufacturer for information relative to propeller installation."
Ranger Craig
RV-9A N214DX
Flying since 7/26/13
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Old 10-15-2021, 07:17 AM
Rich Pulman Rich Pulman is offline
Join Date: Oct 2018
Location: CYQA Canada
Posts: 78
Default Thanks

Thanks for all the replies.

I contacted WW and they said it didn't matter how the propeller was oriented but suggested it be attached for ease of hand propping as some of you have mentioned.
RV-3A (C-FARV) bought
RV-8 (C-FRAP) building

Donated 2021
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Old 10-15-2021, 08:00 AM
pa38112 pa38112 is offline
Join Date: Mar 2008
Location: Clarksboro, NJ
Posts: 1,001

If you research this more you will find out the the orientation for Hand Propping is NOT the best orientation for vibration minimization. A Whirlwind is very light, so it is not a big deal. Props have been oriented that way for 50 years; however, with my metal Sensenich I decided to forgo hand propping and orient it the best for vibration. If you have electronic ignition, you won't be able to hand prop anyway.
2004 RV6A Flying
2002 RV6A Flying
1978 PA38-112
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