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Date: Tue, 06 Jul 2010 22:27:25 -0400
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Subject: Various 326/360 issues
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Scott -

Your statement was very interesting -- "check the fuselage flap filets at=
 the trailing edge.  if these are not level, the wing TE (and thus the cho=
rd) may not be equal from side to side"

I had no idea that this was a possibility.  I assumed that the fuselage fi=
llets were always level.  I did know that the tailcones have a twist -- in=
 fact some guys adjust their rudder cables so that they are level with res=
pect to each other, and other guys (like me) leave them alone.  Next time=
 I have the water level out I'll go look at the fillets on my (not yet flo=
wn) airplane.

With respect to your comments about the variability of pitch response betw=
een different 320/360 aircraft, I learned there as well.  I did not know=
 that 235s did not have a bobweight.  I had also forgotten about the long=
 engine mount.

My personal experience is limited.  I have flown in two 360s.  One was hor=
rible (very pitch sensitive with very low stick forces and low pitch dampi=
ng) and the other was a pure delight to fly.  I do not know what the diffe=
rences were.  The nice airplane was Orin Riddell's and I know it had a big=
 tail and a very far forward CG.  On the other one, I do not know what the=
 CG was or whether it had a big or small tail or whether the bellcrank arm=
 was the long or short location.  I just know that it was rather scary to=
 fly, and that I was not the only one at the field who thought it was a pr=
oblem.  So your basic point -- that there can be significant differences=
 between flying qualities of seemingly identical aircraft -- is definitely=
 correct.  It also suggests that we may be able to improve the handling qu=
alities of our own aircraft perhaps even after they are built (without cut=
ting off the tail, I mean).

Along those lines, has anyone installed a heavier bobweight on their 320/3=
60?

- Rob Wolf


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<font color=3D'black' size=3D'2' face=3D'arial'>
<div>Scott -</div>


<div>&nbsp;</div>


<div>Your statement was very interesting -- "check the fuselage flap filet=
s at the trailing edge.&nbsp; if these are not level, the wing TE (and thu=
s the chord)&nbsp;may not be equal from side to side"</div>


<div>&nbsp;</div>


<div>I had no idea that this was a possibility.&nbsp; I assumed that the=
 fuselage fillets were always level.&nbsp; I did know that the tailcones=
 have a twist -- in fact some guys adjust their rudder cables so that they=
 are level with respect to each other, and other guys (like me) leave them=
 alone.&nbsp; Next time I have the water level out I'll go look at the fil=
lets on my (not yet flown) airplane.</div>


<div>&nbsp;</div>


<div>With respect to your comments about the variability of pitch response=
 between different 320/360 aircraft, I learned there as well.&nbsp; I did=
 not know that 235s did not have a bobweight.&nbsp; I had also&nbsp;forgot=
ten about the long engine mount.</div>


<div>&nbsp;</div>


<div>My personal experience is limited.&nbsp; I have flown in two 360s.&nb=
sp; One was horrible (very pitch sensitive with very low stick forces and=
 low pitch damping) and the other was a pure delight to fly.&nbsp; I do no=
t know what the differences were.&nbsp; The nice airplane was Orin Riddell=
's and I know it had a big tail and a very far forward CG.&nbsp; On the ot=
her one, I do not know what the CG was or whether it had a big or small ta=
il or whether the bellcrank arm was the long or short location.&nbsp; I ju=
st know that it was rather scary to fly, and that I was not the only one=
 at the field who thought it was a problem.&nbsp; So your basic point --=
 that there can be significant differences between flying qualities of see=
mingly identical aircraft -- is definitely correct.&nbsp; It also suggests=
 that we may be able to improve the handling qualities of our own aircraft=
 perhaps even after they are built (without cutting off the tail, I mean).=
</div>


<div>&nbsp;</div>


<div>Along those lines, has anyone installed a heavier bobweight on their=
 320/360?</div>


<div>&nbsp;</div>


<div>- Rob Wolf<br>
<br>
</div>


<div style=3D"CLEAR: both"></div>
</font>

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