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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I do remember a brushfire flying AMA
pattern back in the 80’s with a flying stab. I believe it was Stan
Rautkus’s plane and it used a Geizendaner (sp) flying stab
mechanism. Essentially a square aluminum rod with plastic sockets in the
stab halves running through two ball bearing supports mounted on either side of
the fuse, In the center of the aluminum rod in the fuse was a large
control horn that attached to the servo. I actually used the same mechanism
with a lock on the control horn to make an adjustable stab with standard
elevators back then, also on a brushfire.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Stan’s plane flew well until one day
at the Meroke pattern contest in NY when to the right of the flight line a loud
explosion was heard and Stan’s plane came to the ground in
pieces. Seems that the linkage let go and the stab rotated to 90
degrees. Effective air brake. 110 to 0 mph in nothing flat.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Stuart C.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
discussion-request@nsrca.org [mailto:discussion-request@nsrca.org] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Bob Richards<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, October 18, 2005
11:45 PM<br>
<b><span style='font-weight:bold'>To:</span></b> discussion<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: Stabs</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>It has been tried before, way back in the 70s as I recall. I think Bob
Violet might have sold some hardware to do it. I know he designed a
pattern plane that was featured in one of the magazines back then that had a
flying stab. I know the glider guys use full flying stabs a lot, but for drag
reduction mainly. Not sure why it would not work, but I suspect you would not
get the same "feel" as you would with a conventional stab/elevator.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>With a conventional setup, you are able to play with the camber of the
horizontal surfaces, which can be used to trim the downlines for hands off.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Someone correct me if I am wrong, but when wing tubes became prevalent,
I believe someone (I think Chip Hyde) experiemented with wings that rotated on
the tubes instead of using ailerons. That did not work well, from what I
understand.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Bob R.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
<br>
<br>
<b><i><span style='font-weight:bold;font-style:italic'>jeffghughes@comcast.net</span></i></b>
wrote:<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Now that a lot of 2M planes are going to removeable stabs, it seems a
short step to full flying stabs. Is there any advantage to this type of stab?
Seems like it almost would be easier set up, you wouldn't need to worry about
wing to stab incidence.<o:p></o:p></span></font></p>
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