Today's Message Index:
----------------------
1. 02:59 PM - wing incidence (Oscar Zuniga)
2. 03:46 PM - Re: wing incidence (DJ Vegh)
3. 04:32 PM - Re: wing incidence (Jim Markle)
Message 1
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--> Pietenpol-List message posted by: "Oscar Zuniga" <taildrags@hotmail.com>
Howdy, Pieters-
Actually, I intended this post as a test just to see if it's only me or the
list is unusually quiet... but as long as I'm here writing, I'll ask this
question. The front cabane struts are to be made 1" longer than the rear
ones to provide wing incidence. I believe I saw something in the notes from
Don Pietenpol that the 1" differential provides roughly 3 degrees incidence.
I have drawn it up in CAD and it works out to more like 2 degrees.
Anybody know what it is or should be? I've had to remake my front cabane
struts to replace the damaged ones and I made them 1" longer than the rear
ones but am curious as to the wing incidence that is supposed to result.
My plan when I get ready to re-rig the wings is to set the fuselage level
(based on the upper longerons), measure the incidence of the wing center
section by using a template of the wing's upper camber and a smart level,
then use that angle and the template to adjust the wing struts and brace
wires to set the outer wing panel incidence uniformly. I also plan to rig
it as Don recommends, with the wingtips about 1" high so that when the
supports are removed, the wings will "settle" to level or zero dihedral.
I'll go back and search the archives for posts on rigging the wings. As I
said, this post was mostly intended to test the Matronics server to see if
it's been really quiet the last few days or what.
Oscar Zuniga
San Antonio, TX
mailto: taildrags@hotmail.com
website at http://www.flysquirrel.net
Message 2
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| Subject: | Re: wing incidence |
--> Pietenpol-List message posted by: "DJ Vegh" <djv@imagedv.com>
mine is set to 1.8
DJ
----- Original Message -----
From: "Oscar Zuniga" <taildrags@hotmail.com>
Subject: Pietenpol-List: wing incidence
> --> Pietenpol-List message posted by: "Oscar Zuniga"
> <taildrags@hotmail.com>
>
> Howdy, Pieters-
>
> Actually, I intended this post as a test just to see if it's only me or
> the list is unusually quiet... but as long as I'm here writing, I'll ask
> this question. The front cabane struts are to be made 1" longer than the
> rear ones to provide wing incidence. I believe I saw something in the
> notes from Don Pietenpol that the 1" differential provides roughly 3
> degrees incidence. I have drawn it up in CAD and it works out to more like
> 2 degrees. Anybody know what it is or should be? I've had to remake my
> front cabane struts to replace the damaged ones and I made them 1" longer
> than the rear ones but am curious as to the wing incidence that is
> supposed to result.
>
> My plan when I get ready to re-rig the wings is to set the fuselage level
> (based on the upper longerons), measure the incidence of the wing center
> section by using a template of the wing's upper camber and a smart level,
> then use that angle and the template to adjust the wing struts and brace
> wires to set the outer wing panel incidence uniformly. I also plan to rig
> it as Don recommends, with the wingtips about 1" high so that when the
> supports are removed, the wings will "settle" to level or zero dihedral.
>
> I'll go back and search the archives for posts on rigging the wings. As I
> said, this post was mostly intended to test the Matronics server to see if
> it's been really quiet the last few days or what.
>
> Oscar Zuniga
> San Antonio, TX
> mailto: taildrags@hotmail.com
> website at http://www.flysquirrel.net
>
>
>
Message 3
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| Subject: | Re: wing incidence |
--> Pietenpol-List message posted by: "Jim Markle" <jim_markle@mindspring.com>
The angle of incidence and the angle between the two top cabane holes is not
the same thing. The angle created by two points, 1" higher than the other,
spaced at 28 3/4" (the Pietenpol plans show 27 3/4" between the 1" spars),
is 1.99 degrees.....and if the chord line in the airfoil was "flat"...that
would be the angle of incidence. But the airfoil's chord line is tilted up
from a line that would be drawn between these two holes.....so I believe you
would add that 1.99 to the airfoil's actual (and tilted up) angle of
incidence.....
Jim Markle
Plano, TX
214.505.6101
----- Original Message -----
From: "DJ Vegh" <djv@imagedv.com>
Subject: Re: Pietenpol-List: wing incidence
> --> Pietenpol-List message posted by: "DJ Vegh" <djv@imagedv.com>
>
> mine is set to 1.8
>
> DJ
>
> ----- Original Message -----
> From: "Oscar Zuniga" <taildrags@hotmail.com>
> To: <pietenpol-list@matronics.com>
> Sent: Monday, April 18, 2005 2:56 PM
> Subject: Pietenpol-List: wing incidence
>
>
>> --> Pietenpol-List message posted by: "Oscar Zuniga"
>> <taildrags@hotmail.com>
>>
>> Howdy, Pieters-
>>
>> Actually, I intended this post as a test just to see if it's only me or
>> the list is unusually quiet... but as long as I'm here writing, I'll ask
>> this question. The front cabane struts are to be made 1" longer than the
>> rear ones to provide wing incidence. I believe I saw something in the
>> notes from Don Pietenpol that the 1" differential provides roughly 3
>> degrees incidence. I have drawn it up in CAD and it works out to more
>> like 2 degrees. Anybody know what it is or should be? I've had to
>> remake my front cabane struts to replace the damaged ones and I made them
>> 1" longer than the rear ones but am curious as to the wing incidence that
>> is supposed to result.
>>
>> My plan when I get ready to re-rig the wings is to set the fuselage level
>> (based on the upper longerons), measure the incidence of the wing center
>> section by using a template of the wing's upper camber and a smart level,
>> then use that angle and the template to adjust the wing struts and brace
>> wires to set the outer wing panel incidence uniformly. I also plan to
>> rig it as Don recommends, with the wingtips about 1" high so that when
>> the supports are removed, the wings will "settle" to level or zero
>> dihedral.
>>
>> I'll go back and search the archives for posts on rigging the wings. As
>> I said, this post was mostly intended to test the Matronics server to see
>> if it's been really quiet the last few days or what.
>>
>> Oscar Zuniga
>> San Antonio, TX
>> mailto: taildrags@hotmail.com
>> website at http://www.flysquirrel.net
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
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