Mailing List flyrotary@lancaironline.net Message #28400
From: Echo Lake Fishing Resort (Georges Boucher) <echolakeresort@telus.net>
Subject: Re: [FlyRotary] Re: Static Engine RPM
Date: Sun, 11 Dec 2005 17:53:52 -0800 (Pacific Standard Time)
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Hi! Ed
I guess I missed something, how can the P-factor be in the"opposite" direction after shortening the prop 2"?
Georges B. 
 
-------Original Message-------
 
Date: 12/10/05 14:54:00
Subject: [FlyRotary] Re: Static Engine RPM
 
 Hi Bernie,
 
Good point, Yes, you are correct the engine mount is still the same.  However, since it only causes 1/2 ball deflection in cruise, I not certain that the mount is that far offset in the wrong direction.  Guess I should add a few washers and find out - just kidding.  One of my numerous projects is to fabricate some new engine mounting brackets (keeping the same mounting frame) with the offset to the opposite side. 
 
Besides, its really the increased ROC that really tells the story.  I consistently get over 1500 fpm and even get up into the 1700 fpm range on cold days lightly loaded.  Previously it was in the 1000-1200 fpm range.
 
Ok on the prop, Bernie. 
 
I'm planning at this time to fly out to Bill Eslick flyin in Feb weather permitting - make a nice long flight for your 9.
 
Ed A
 
 
===========================================
Hi Ed,
 
Don't forget to add that the P-factor is now in the opposite direction and I believe you did not change angle of engine mount to offset this. I'm not questioning that you get more thrust with this set up, just questioning if your criteria of lack of rudder is a good indicator.
 
Took your prop and the sensenich to plant city and left both with them. Will probably be able to pick them up on the way home from Memphis after Christmas.
 
Cheers and Merry Christmas in NC,
Bernie
 
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