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From: jeffrey rienzi <ptjetpilot@hotmail.com>
Subject: RE: [LML] Single Seat Lancair 320 Flight Controls
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Thank You Rob=2C Creative Imput ! I was asked previously why I would want t=
o do such a thing=2C but I can't  think of another fuel efficient=2C Fast=
=2C "ROOMY" aircraft that would be this economical to operate. I had a lega=
cy=2C which was nice=2C but a little pricey to operate. Then a Lancair 360=
=2C which was way to cramped for me on long flights. I thought a 235 or 360=
 single seat would make a Great Aircraft=2C Comfortable=2C Roomy Cockpit=2C=
 with the speed and economy I was looking for. Do you know of anything else=
 the would fit that description for the Price=2C Speed=2C Comfort=2C and ec=
onomy? Again thanks for the creative input

Jeff

To: lml@lancaironline.net
Date: Thu=2C 31 May 2012 15:17:31 -0400
From: rwolf99@aol.com
Subject: [LML] Single Seat Lancair 320 Flight Controls


Jeffrey -


=20


It would not be too difficult to adapt a 320/360 to a single seat.  "All yo=
u gotta do is..." =20


=20


1)  You need to move the forward elevator pushrod to the side.  Obviously y=
ou can't run it thru your body=2C and there will not be room under the seat=
.


=20


2)  To accomplish this=2C you will have to make a new forward weldment to w=
hich the control stick attaches.  I would use the same attach points to the=
 front spar.  Extend the new weldment to one side and attach the forward el=
evator pushrod to that end.  You will have to have the same distance betwee=
n the pushrod attach point and the axis of rotation.  (Duplicate the tabs w=
hich are presently at the center of the weldment at the new attach point at=
 the end.)  Have the stick pivot at the same distance from the axis of rota=
tion also.  This is not a good explanation=2C but the redesign of this weld=
ment is something you will have to figure out.  One complication -- present=
ly the sticks attach at the ends of the weldment -- now it will attach in t=
he middle -- so some creativity is required.  The key point is to have the =
distances between the pivot points and the attach points of pushrods identi=
cal=2C so that the handling qualities don't change.  (Note that the existin=
g stops in the aileron system are at the stick.  You will have to provide f=
or this in your new design.)


=20


3)  You will need to install longer aileron pushrods from the inner idlers =
to the stick. =20


=20


4)  I would not change the hardward aft of the baggage bay=2C where the pre=
sent idler and bobweight are located.  You can accomplish this by installin=
g an idler to the forward face of the baggage bulkhead.  I have attached a =
crude sketch of such an arrangement.  This will be much simpler than the fo=
rward weldment=2C as it simply translates the fore-aft pushrod motion back =
to the vehicle centerline.  You should probably install a phenolic hard poi=
nt where these loads are applied to the baggage bulkhead.


=20


5)  Make a short pushrod to connect this idler to the existing idler/bobwei=
ght contraption aft of the bagage bulkhead.


=20


Once you get this all built=2C do a structural integrity test to make sure =
the pitch control structure is robust.  Apply full aft stick and then incre=
ase the applied force to 167 pounds (FAR 23.397) and make sure it holds tog=
ether.  Do the same with forward stick.  For ailerons=2C use 67 pounds.  Lo=
ok for things like aileron pushrod bowing and front weldment bending.  Oh=
=2C and disbonding of the structure from the baggage bulkhead.


=20


My drawing does not show the pushrod displace all the way to the side of th=
e vehicle.  If you do that=2C it will not align with the vehicle centerline=
.  However=2C I think it will be okay if you do that.


=20


I don't get the feeling that this is a huge undertaking.  I'm not sure why =
you'd want to do it=2C but as long as the distances between the appropriate=
 pivot points are maintained=2C you should do fine.


=20


Enjoy!


=20


- Rob Wolf


=20

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<body class=3D'hmmessage'><div dir=3D'ltr'>
Thank You Rob=2C Creative Imput ! I was asked previously why I would want t=
o do such a thing=2C but I can't&nbsp=3B think of another fuel efficient=2C=
 Fast=2C "ROOMY" aircraft that would be this economical to operate. I had a=
 legacy=2C which was nice=2C but a little pricey to operate. Then a Lancair=
 360=2C which was way to cramped for me on long flights. I thought a 235 or=
 360 single seat would make a Great Aircraft=2C Comfortable=2C Roomy Cockpi=
t=2C with the speed and economy I was looking for. Do you know of anything =
else the would fit that description for the Price=2C Speed=2C Comfort=2C an=
d economy? Again thanks for the creative input<br><br>Jeff<br><br><div><div=
 id=3D"SkyDrivePlaceholder"></div><hr id=3D"stopSpelling">To: lml@lancairon=
line.net<br>Date: Thu=2C 31 May 2012 15:17:31 -0400<br>From: rwolf99@aol.co=
m<br>Subject: [LML] Single Seat Lancair 320 Flight Controls<br><br><font si=
ze=3D"2" color=3D"black" face=3D"arial">
<div>Jeffrey -</div>


<div>&nbsp=3B</div>


<div>It would not be too difficult to adapt a 320/360 to a single seat.&nbs=
p=3B "All you gotta do is..."&nbsp=3B </div>


<div>&nbsp=3B</div>


<div>1)&nbsp=3B You need to move the forward elevator pushrod to the side.&=
nbsp=3B Obviously you can't run it thru your body=2C and there will not be =
room under the seat.</div>


<div>&nbsp=3B</div>


<div>2)&nbsp=3B To accomplish this=2C you will have to make a new forward w=
eldment to which the control stick attaches.&nbsp=3B I would use the same a=
ttach points to the front spar.&nbsp=3B Extend the new weldment to one side=
 and attach the forward elevator pushrod to that end.&nbsp=3B You will have=
 to have the same distance between the pushrod attach point and the axis of=
 rotation.&nbsp=3B (Duplicate the tabs which are presently at the center of=
 the weldment at the new attach point at the end.)&nbsp=3B Have the stick p=
ivot at the same distance from the axis of rotation also.&nbsp=3B This is n=
ot a good explanation=2C but the redesign of this weldment is something you=
 will have to figure out.&nbsp=3B One complication -- presently the sticks =
attach at the ends of the weldment -- now it will attach in the middle -- s=
o some creativity is required.&nbsp=3B The key point is to have the distanc=
es between the pivot points and the attach points of pushrods identical=2C =
so that the handling qualities don't change.&nbsp=3B (Note that the existin=
g stops in the aileron system are at the stick.&nbsp=3B You will have to pr=
ovide for this in your new design.)</div>


<div>&nbsp=3B</div>


<div>3)&nbsp=3B You will need to install longer aileron pushrods from the i=
nner idlers to the stick.&nbsp=3B </div>


<div>&nbsp=3B</div>


<div>4)&nbsp=3B I would not change the hardward aft of the baggage bay=2C w=
here the present idler and bobweight are located.&nbsp=3B You can accomplis=
h this by installing an idler to the forward face of the baggage bulkhead.&=
nbsp=3B I have attached a crude sketch of such an arrangement.&nbsp=3B&nbsp=
=3BThis will be much simpler than the forward weldment=2C as it simply tran=
slates the fore-aft pushrod motion back to the vehicle centerline.&nbsp=3B =
You should probably install a phenolic hard point where these loads are app=
lied to the baggage bulkhead.</div>


<div>&nbsp=3B</div>


<div>5)&nbsp=3B Make a short pushrod to connect this idler to the existing =
idler/bobweight contraption aft of the bagage bulkhead.</div>


<div>&nbsp=3B</div>


<div>Once you get this all built=2C do a structural integrity test to make =
sure the pitch control structure is robust.&nbsp=3B Apply full aft stick an=
d then increase the applied force to 167 pounds (FAR 23.397) and make sure =
it holds together.&nbsp=3B Do the same with forward stick.&nbsp=3B For aile=
rons=2C use 67 pounds.&nbsp=3B Look for things like aileron pushrod bowing =
and front weldment bending.&nbsp=3B Oh=2C and disbonding of the structure f=
rom the baggage bulkhead.</div>


<div>&nbsp=3B</div>


<div>My drawing does not show the pushrod displace all the way to the side =
of the vehicle.&nbsp=3B If you do that=2C it will not align with the vehicl=
e centerline.&nbsp=3B However=2C I think it will be okay if you do that.</d=
iv>


<div>&nbsp=3B</div>


<div>I don't get the feeling that this is a huge undertaking.&nbsp=3B I'm n=
ot sure why you'd want to do it=2C but as long as the distances between the=
 appropriate pivot points&nbsp=3Bare maintained=2C you should do fine.</div=
>


<div>&nbsp=3B</div>


<div>Enjoy!</div>


<div>&nbsp=3B</div>


<div>- Rob Wolf</div>


<div>&nbsp=3B</div>
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