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<DIV><SPAN class=120062513-25012004><FONT face=Arial size=2>I use an old surface
gage with a dial indicator to check the leading and trailing edges on my planes.
I doubt that my bench, a large, thick, wood covered steel door is that accurate.
So everything is just a compromise at best.</FONT></SPAN></DIV>
<DIV><SPAN class=120062513-25012004><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=120062513-25012004><FONT face=Arial size=2>Tom
W.</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> discussion-request@nsrca.org
[mailto:discussion-request@nsrca.org]<B>On Behalf Of </B>Kenneth
Blackwell<BR><B>Sent:</B> Sunday, January 25, 2004 6:16 AM<BR><B>To:</B>
discussion@nsrca.org<BR><B>Subject:</B> Re: Urgent ! Incidence Meter
Question<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>Scott,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Incidence meters of all types are generally not
accurate enough for pattern use. You need an accuracy of 0.1 deg. I have
an electronic digital level that will read to 0.1 deg and I only use it for
cross checks. Although the readout is good to 0.1 deg, the overall accuracy
isn't that good. </FONT><FONT face=Arial size=2>If you have a good flat
table...the very <STRONG>best way</STRONG> is to set the fuse on the table and
measure up to the centers of wing/stab LE/TE then with trig calculate the
incidence angle. To do this you need an accurate vertical measurementwith
an accuracy of 1/64" or better. On the Focus I and II the bottom of the
fuselage is zero incidence. Both wing and stab should be set to specifications
provided by Piedmont from this reference.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Cheers,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Ken Blackwell</FONT></DIV>
<DIV><FONT face=Arial size=2>Precision Model Design</FONT></DIV>
<DIV><FONT face=Arial size=2><A
href="mailto:blackwellk@snowhill.com">blackwellk@snowhill.com</A></FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=F3AFlyer7@comcast.net href="mailto:F3AFlyer7@comcast.net">Scott
Pavlock</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">NSRCA Discussion Page</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, January 24, 2004 7:20
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Urgent ! Incidence Meter
Question</DIV>
<DIV><BR></DIV>
<BLOCKQUOTE id=0><LABEL id=HbSession SessionId="2549741479"></LABEL>
<DIV><FONT face=Arial size=2>I am currently installing my wing adusters on
my Focus 2 and I am trying to calibrate my Great Planes Incidence Meter. I
placed the meter on a perfectly level table and set it for Zero Degrees. I
decided to rotate the device 180 to see if it would still be level (the
laser was roughly facing north and now is facing south).
The degrees changed positive 1/2 degree. I thought I might have moved the
placement of the laser so I secured everything possible with tape and
rotated it again. Same thing. Does anyone know what might be the
problem???</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks in advance!</FONT></DIV>
<DIV><FONT face=Arial
size=2>_______________________________________________________________<BR>Scott
Pavlock</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial
size=2>photos.yahoo.com/f3aflyer7</FONT></DIV></BLOCKQUOTE>
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