[NSRCA-discussion] Guys I need help...

[Karl G. Mueller]

JLK,

Looks like you need to check out your incidence meter.
If it is the old style Robarts Meter your lucky if you can read
as close as 1º in accuracy.

Karl  G. Mueller

----- Original Message ----- 
From: "John Konneker" <jlkonn at hotmail.com>
To: <nsrca-discussion at lists.nsrca.org>
Sent: Wednesday, December 27, 2006 11:10 AM
Subject: [NSRCA-discussion] Guys I need help...


> I am working on my Focus II.
> I have the wing adjusters for one wing installed.
> In order to minimize the chances of a less than level table to affect the
> incidence I decided to -0- the plane to itself.  The fuse sides at the
> canopy are supposed to be level with the "water line" so I put a level on
it
> to check...bubble at -0-.  I then double checked against the fin bed and
it
> showed level.  I put a Robart incidence meter on the wing, set the panel
to
> +1/4 deg and glued the wing adjusters on that side.
> This morning I was getting ready to do the other wing panel when I decided
> to do some measuring.
> Here is where I ran in to the unexplainable...
> I measured the wing leading edge to the table top and then the trailing
edge
> to the table top.
> I show approx. .15 inches positive!
> I measured the leading and trailing edge to the piin stripe down the fuse
> side (this stripe appears close to the water line) same positve incidence
> shown.
> I then rechecked with my incidence meter and got +1/4 deg with the fuse
> level...I then "reversed" the incidence meter to check to see if swapping
> ends had any effect...very little...maybe 1/8 degree...I can't read it
that
> close.
> I then traced the leading and trailing edges on the fuse side with a felt
> tip pin and rechecked my measurements to the table top and pin
> stripe...same.
> I am at a loss.
> How can I seem to be off this much?
> I could just cry....
> Any ideas?
> Thanks!
> JLK
>
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