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  #11  
Old 05-20-2017, 05:15 PM
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Fearless Fearless is offline
 
Join Date: Aug 2006
Location: Crestwood, KY
Posts: 848
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Just trying to be vigilant on all the items before I commit to the air. Now I just need to find a day where the wind gods will be kind.
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RV-9A Based K6I2
Flying - out of Phase 1
Building RV-12 with brother
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  #12  
Old 05-20-2017, 06:22 PM
Robert Anglin Robert Anglin is offline
 
Join Date: Mar 2008
Location: houston, texas
Posts: 900
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You are very close with these numbers. Don't sweet 50-100 RPM's for now. I don't remember the recommendation from Lycon right now as it has been a long time. The figure I think is 2200 or 2300 plus or minus 50 RPM's by the book. You will need to fly your aircraft for a while and get used to it. Then the real place you want to fined is up at 7500" D-Alt., where you should be getting your rated max RPM for that engine with full power and leaned to best power.
With some engines that is 2650 others 2700 or 2750 as with the one we fly. If you are this close to these numbers now you will have plenty of time to look up the specs. After all you have the magic leaver in your hand to moderate this. I think the best article I have seen was in one of the old Tonnie Bingulas books on fixed pitch props and flat 4ers' . Look in the arcives under fixed pitch props, you may find that stuff in there somewhere.
Hope this helps, Yours, R.E.A. III #80888
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