The Murphy Builders Site

I just finished re-measuring and weighing N52GG this past
weekend and after doing so, I decided to look at W&B emails
in the Murphy Rebel builders section. I came across the
following email which now bothers me from several days ago.
______________________________________________
On Date: 2/3/2011 4:33 PM the following email was posted by
Charlie E

Jesse
A couple years back I asked a similar question to MAM.
The answer I got from Darryl Murphy was:

Hello Charlie
I think the confusion is that the data point (center of axle)
is approximately 1.15" aft of the leading edge. 20% of 60" = 12",
12" - 1.15" = 10.85" A.O.D. (aft of datum).
Hope this helps.
Cheers Darryl"
_________________________________

The concern is that is 1.25" ahead of the leading edge of
the wing, not 1.15" aft of the leading edge. That is a difference
of 2.45". WOW. I had 2 certified aircraft mechanics doing the
measurements and they were done twice with almost (less than .2")
when the other person did his measurements. So did Darryl make a
mistake in his response??? My plane was built to the manual so
I do not understand that there could be that much difference.

Anyway this should promote an interesting discussion.

Gary G




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