Subject: thrust line
From: rotaryeng
Date: 11/26/2012, 7:39 PM
To: AAAA-rotaryeng




Paul,

I have the PSRU mounted, and started to place the lower cowl. I pulled the
string from the rudder down the centerline of the plane and verified that
my engine mount has about 2 degrees of right offset. I measured the engine
and confirmed that I mounted it center of the mount laterally, and aligned
with the end. The offset is built in presumably to counter the p factor
from the 300 HP continental that the viking had in her. And it did it well
too. I have been flying Arrows, Cherokees and 172s lately, and these
require much more right rudder than the viking did.

Question: What is the offset most of you guys are using in tractor
applications with high HP rotaries?

Kevin Alderman


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