Today's Message Index:
----------------------
1. 03:02 AM - Wright wind tunnel (walt evans)
2. 04:06 AM - Loops and rolls (Gene Hubbard)
3. 07:37 AM - Re: Interested in the Smoke.... (Roman Bukolt)
4. 12:28 PM - Re: Wing spar questions (Dick Navratil)
5. 12:59 PM - Re: Wing spar questions (Jack T. Textor)
6. 02:01 PM - Re: Wing spar questions ()
7. 05:31 PM - Re: Wing spar questions (Gene Beenenga)
8. 06:05 PM - Laminated wing spars (Mike Whaley)
9. 07:05 PM - Pietenpol List: Excellent Quality R/C Model Piet (n925wb1@aol.com)
10. 07:27 PM - Re: Pietenpol List: Excellent Quality R/C Model Piet (DJ Vegh)
11. 10:53 PM - Re: Wing spar questions (Catdesign)
Message 1
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| Subject: | Wright wind tunnel |
Check out this site where you can play with Wright Bros wind tunnel.
http://wright.grc.nasa.gov/airplane/tunnl2int.html
walt evans
NX140DL
do not archive
Message 2
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--> Pietenpol-List message posted by: Gene Hubbard <enhubbard@sbcglobal.net>
I have seen a barrel roll done by a Grega. Not that I intend to try either.
Airframe assembled and engine on. Doing final assembly on what will be
NX421GN!
Gene
Hans Vander Voort wrote:
>--> Pietenpol-List message posted by: Hans Vander Voort <hans.vander.voort@alfalaval.com>
>
>Jim,
>
>I would fill the center to avoid crushing the strut but not for the
>negative G's
>
>Negative G loads are not an issue for a Pietenpol struts, theoretically
>they handle 7 G's positive and probably 3+ negative.
>I did some calculations once, but it is so over engineered it can stand
>many times normal flight (non Aerobatic) maneuvers
>
>Which brings up an question I have asked myself many times.
>Has anyone ever done a successful Roll or Loop in a Aircamper?
>
>Not that I am going to try, just like to know.
>
>Hans
>
>
>
>
>
>
>
>
>
Message 3
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| Subject: | Re: Interested in the Smoke.... |
You want to know about smoke?
Check with Michael Cuy NX48MC.
Buy his video on the building and flying his Piet. Very informative.
He has smoke. He has a plastic pressure sprayer bottle in his cockpit.
You can watch him pumping furiously while flying with a video camera strapped to
one of the struts pointing back at him.
Message 4
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| Subject: | Re: Wing spar questions |
I don't remember who you were going to order thru so lets review all options.
3/4 with ply caps strips would be fine, but a lot of work.
McCormack in Madison should have full cut 1x6 pieces in stock.
Wicks Aircraft in Highland, Il. (near St. Louis) should have it
Aircraft Spruce, of course.
Wayne at Midwest Marine Plywood in Eagan, Mn. should have full cut 2x6 sections.
Two of those places are within 2 1/2 hours drive of you.
Is there a reason you spec 2"x? The wood I have purchased in the past from McCormack
has been over 1" rough cut and I have gotten 7/8 or better finished. The
2"x that I have gotten from Midwest Marine Plywood have been 2 1/16" or better.
It's a lot of work milling it down.
Dick N.
----- Original Message -----
From: Jack T. Textor
To: pietenpol-list@matronics.com
Sent: Monday, January 16, 2006 8:46 PM
Subject: Pietenpol-List: Wing spar questions
All,
Even after reading the archives I would really appreciate you input on this one.
I have built my ribs for the 1" spars. For strength I thought 1" would be
best. Was getting ready to order wood for the spars and the supplier is out
of 2" stock in 6" width. Also looked closer at Vi's 3 piece wing, I'm wondering
if I should just go with 3/4 ". Another thought would be to use 3/4 " and
sandwich it with 1/8 ply on each side. I'm driving myself nuts. Again, thanks
for your thoughts!
Jack
Jack Textor
Vice President
Palmer Group
515-225-7000
www.thepalmergroup.com
Message 5
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| Subject: | Wing spar questions |
Well Dick, as I said, I'm driving myself nuts. I planned to buy rough 2x6x16's
from Public Lumber in Detroit at $5.80 LF. They are out of that and their price
on 2x8x16's jumps to $10.27. I have looked at the selection at McCormick's
and didn't see anything I would be happy with for spars. I appreciate the lead
on Midwest, I will call them. After comments I received off-line I'm leaning
towards =BE" stock for the spars. Thanks again!
Jack
________________________________
From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Dick Navratil
Sent: Tuesday, January 17, 2006 2:28 PM
Subject: Re: Pietenpol-List: Wing spar questions
I don't remember who you were going to order thru so lets review all options.
3/4 with ply caps strips would be fine, but a lot of work.
McCormack in Madison should have full cut 1x6 pieces in stock.
Wicks Aircraft in Highland, Il. (near St. Louis) should have it
Aircraft Spruce, of course.
Wayne at Midwest Marine Plywood in Eagan, Mn. should have full cut 2x6 sections.
Two of those places are within 2 1/2 hours drive of you.
Is there a reason you spec 2"x? The wood I have purchased in the past from McCormack
has been over 1" rough cut and I have gotten 7/8 or better finished. The
2"x that I have gotten from Midwest Marine Plywood have been 2 1/16" or better.
It's a lot of work milling it down.
Dick N.
----- Original Message -----
From: Jack T. Textor <mailto:jtextor@thepalmergroup.com>
To: pietenpol-list@matronics.com
Sent: Monday, January 16, 2006 8:46 PM
Subject: Pietenpol-List: Wing spar questions
All,
Even after reading the archives I would really appreciate you input on this one.
I have built my ribs for the 1" spars. For strength I thought 1" would be
best. Was getting ready to order wood for the spars and the supplier is out
of 2" stock in 6" width. Also looked closer at Vi's 3 piece wing, I'm wondering
if I should just go with 3/4 ". Another thought would be to use 3/4 " and
sandwich it with 1/8 ply on each side. I'm driving myself nuts. Again, thanks
for your thoughts!
Jack
Jack Textor
Vice President
Palmer Group
515-225-7000
www.thepalmergroup.com
Message 6
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| Subject: | Wing spar questions |
Cc: "Jack T. Textor" <jtextor@thepalmergroup.com>
--> Pietenpol-List message posted by: <glennthomas@charter.net>
Hi Jack,
Bear in mind that I'm just getting started but as I interpret the VJ Kapler 3 Pc.
wing plan, it specifies a 3/4" x 4 3/4" spar. I'm building my rib jig based
on those dimensions. I ordered the wing capstrip and a 6' piece of the 4 3/4"
x 3/4 to test fit the ribs I produce and then store them on that (which will
eventually become the center section of spar. I plan on ordering the rest of
the spar material when the ribs are done. The said the spar material is finished
4 sides and is exact. ...so the piece I have should be the same as what
I plan to order later.
Also, from what I can tell, orders for wider dimensions of wood from places like
Aircraft Spruce (where I ordered my Sitka Spruce) are harder to fill.
Is there are reason to get it 6" wide? I just ordered the exact dimensions that
I need. I hope I'm not missing anything. If I am could somebody let me know?
Thanks,
Glenn Thomas
---- "Jack T. Textor" <jtextor@thepalmergroup.com> wrote:
> I planned to buy rough 2x6x16's from Public Lumber in Detroit at $5.80 LF.
>They are out of that and their price on 2x8x16's jumps to $10.27.
Message 7
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| Subject: | Wing spar questions |
--> Pietenpol-List message posted by: Gene Beenenga <kgbunltd@earthlink.net>
Pawnee Lumber company in, where else, Pawnee, Illinois....sells "aircraft grade
lumber". since i did not need to purchase spars, i have not ideas as to their
prices. I do know, however, that some "aircraft kit builder in Missouri", buys
all of his lumber from these guys. Here is their phone number, best of results...
217.625-2771, "Mean" Gene, GN-1, NX5893 (in stages of construction, with
Corvair power, wing and fuselage on gear)
-----Original Message-----
>From: "Jack T. Textor" <jtextor@thepalmergroup.com>
>Sent: Jan 17, 2006 2:59 PM
>To: pietenpol-list@matronics.com
>Subject: RE: Pietenpol-List: Wing spar questions
>
>Well Dick, as I said, I'm driving myself nuts. I planned to buy rough 2x6x16's
from Public Lumber in Detroit at $5.80 LF. They are out of that and their price
on 2x8x16's jumps to $10.27. I have looked at the selection at McCormick's
and didn't see anything I would be happy with for spars. I appreciate the
lead on Midwest, I will call them. After comments I received off-line I'm leaning
towards " stock for the spars. Thanks again!
>
>Jack
>
>
>
>
>
>________________________________
>
>From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Dick Navratil
>Sent: Tuesday, January 17, 2006 2:28 PM
>To: pietenpol-list@matronics.com
>Subject: Re: Pietenpol-List: Wing spar questions
>
>
>
>I don't remember who you were going to order thru so lets review all options.
3/4 with ply caps strips would be fine, but a lot of work.
>
>McCormack in Madison should have full cut 1x6 pieces in stock.
>
>Wicks Aircraft in Highland, Il. (near St. Louis) should have it
>
>Aircraft Spruce, of course.
>
>Wayne at Midwest Marine Plywood in Eagan, Mn. should have full cut 2x6 sections.
>
>Two of those places are within 2 1/2 hours drive of you.
>
>Is there a reason you spec 2"x? The wood I have purchased in the past from McCormack
has been over 1" rough cut and I have gotten 7/8 or better finished. The
2"x that I have gotten from Midwest Marine Plywood have been 2 1/16" or better.
It's a lot of work milling it down.
>
>Dick N.
>
>
>
> ----- Original Message -----
>
> From: Jack T. Textor <mailto:jtextor@thepalmergroup.com>
>
> To: pietenpol-list@matronics.com
>
> Sent: Monday, January 16, 2006 8:46 PM
>
> Subject: Pietenpol-List: Wing spar questions
>
>
>
> All,
>
> Even after reading the archives I would really appreciate you input on this one.
I have built my ribs for the 1" spars. For strength I thought 1" would be
best. Was getting ready to order wood for the spars and the supplier is out
of 2" stock in 6" width. Also looked closer at Vi's 3 piece wing, I'm wondering
if I should just go with 3/4 ". Another thought would be to use 3/4 " and
sandwich it with 1/8 ply on each side. I'm driving myself nuts. Again, thanks
for your thoughts!
>
> Jack
>
>
>
> Jack Textor
>
> Vice President
>
> Palmer Group
>
> 515-225-7000
>
> www.thepalmergroup.com
>
Message 8
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| Subject: | Laminated wing spars |
--> Pietenpol-List message posted by: "Mike Whaley" <MerlinFAC@cfl.rr.com>
If anyone's interested, Steen Aero Lab will custom-build a set of
vacuum-formed, laminated spars to your specs... they can build spar "blanks"
as well if you want to do the final shaping. 25%+ stronger than the
equivalent solid spar and very resistant to warpage, and no weight gain.
Also less likely to have hidden defects. If you're a little uneasy about
going to 3/4" spars, you might consider going with laminated spars to make
sure the full strength is there.
http://www.steenaero.com/Components/wing_laminated_spars.cfm
(Obligatory disclaimer... I work at SAL :)
-Mike
Mike Whaley merlin@ov-10bronco.net
Webmaster, OV-10 Bronco Association
http://www.ov-10bronco.net/
Message 9
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| Subject: | Pietenpol List: Excellent Quality R/C Model Piet |
I don't know if many of you on the list have had the opportunity to see some of
the stunning work coming out of the radio-controlled community lately. Suffice
it to say there are some very talented modelers out there!
Here is a link to a fellow who has built an exquisite model of G-ECVB, right down
the the Model A (although I believe the full-scale G-ECVB flies on a flat-four).
Regardless, this is an impressive model with a 57" wingspan.
http://www.rcgroups.com/forums/showthread.php?t=462847
I hope everyone enjoys.
-Wayne
Message 10
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| Subject: | Re: Pietenpol List: Excellent Quality R/C Model Piet |
wow... just looked at the thread an noticed he referenced my website. funny how
the tangled web of the internet makes its rounds.
DJ
----- Original Message -----
From: n925wb1@aol.com
To: pietenpol-list@matronics.com
Sent: Tuesday, January 17, 2006 8:04 PM
Subject: Pietenpol-List: Pietenpol List: Excellent Quality R/C Model Piet
I don't know if many of you on the list have had the opportunity to see some
of the stunning work coming out of the radio-controlled community lately. Suffice
it to say there are some very talented modelers out there!
Here is a link to a fellow who has built an exquisite model of G-ECVB, right
down the the Model A (although I believe the full-scale G-ECVB flies on a flat-four).
Regardless, this is an impressive model with a 57" wingspan.
http://www.rcgroups.com/forums/showthread.php?t=3D462847
I hope everyone enjoys.
-Wayne
Message 11
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| Subject: | Re: Wing spar questions |
Why not use 3/4 inch spars and add a 1x1/8 spruce to the front and back to make
up an I-beam and make the thickness 1 inch. I would think fully facing the spars
with ply would be to much of a weight penalty.
Likewise, does anyone know if the 3/4" spars BHP used were routed?
Chris Tracy
Sacramento, Ca
----- Original Message -----
From: Jack T. Textor
To: pietenpol-list@matronics.com
Sent: Monday, January 16, 2006 6:46 PM
Subject: Pietenpol-List: Wing spar questions
All,
Even after reading the archives I would really appreciate you input on this one.
I have built my ribs for the 1" spars. For strength I thought 1" would be
best. Was getting ready to order wood for the spars and the supplier is out
of 2" stock in 6" width. Also looked closer at Vi's 3 piece wing, I'm wondering
if I should just go with 3/4 ". Another thought would be to use 3/4 " and
sandwich it with 1/8 ply on each side. I'm driving myself nuts. Again, thanks
for your thoughts!
Jack
Jack Textor
Vice President
Palmer Group
515-225-7000
www.thepalmergroup.com
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