Today's Message Index:
----------------------
1. 01:39 PM - Front seat attachment (Jeff Boatright)
2. 02:26 PM - Re: Front seat attachment (hvandervoo@aol.com)
3. 03:28 PM - Re: Front seat attachment (Skip Gadd)
4. 04:04 PM - Grega GN-1 Biplane Questions (jimd)
5. 04:16 PM - Re: Front seat attachment (Jeff Boatright)
6. 04:18 PM - Re: Front seat attachment (Jeff Boatright)
7. 04:34 PM - Re: Grega GN-1 Biplane Questions (DJ Vegh)
8. 04:45 PM - Re: Grega GN-1 Biplane Questions (jimd)
Message 1
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Subject: | Front seat attachment |
Pieters,
In repairing damage to our fuselage, we found that the front seat was
held in only by two wood screws through the seat back. The front
vertical is made of a couple of 1x1 spruce sticks (the framing) and a
plywood web with a cut-out for control torque tube. Is that plywood
supposed to be glued to the spruce crossmember that is glued to the
bottom of the fuselage?
Thanks,
Jeff
--
_____________________________________________________________
Jeffrey H. Boatright, PhD
Associate Professor, Emory Eye Center, Atlanta, GA, USA
Senior Editor, Molecular Vision, http://www.molvis.org/molvis
mailto:jboatri@emory.edu
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Subject: | Re: Front seat attachment |
Jeff,
My interpretation of the drawings was; yes all glued.
Including to the Ash cross member at the bottom.
Hans
-----Original Message-----
From: Jeff Boatright <jboatri@emory.edu>
Sent: Tue, 23 Oct 2007 3:38 pm
Subject: Pietenpol-List: Front seat attachment
?
Pieters,?
?
In repairing damage to our fuselage, we found that the front seat was held in only
by two wood screws through the seat back. The front vertical is made of a
couple of 1x1 spruce sticks (the framing) and a plywood web with a cut-out for
control torque tube. Is that plywood supposed to be glued to the spruce crossmember
that is glued to the bottom of the fuselage??
?
Thanks,?
?
Jeff?
-- ?
_____________________________________________________________?
Jeffrey H. Boatright, PhD?
Associate Professor, Emory Eye Center, Atlanta, GA, USA?
Senior Editor, Molecular Vision, http://www.molvis.org/molvis?
mailto:jboatri@emory.edu?
?
?
?
________________________________________________________________________
Email and AIM finally together. You've gotta check out free AOL Mail! - http://mail.aol.com
Message 3
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Subject: | Front seat attachment |
Jeff, I glued mine.
Skip
> [Original Message]
> From: Jeff Boatright <jboatri@emory.edu>
> Is that plywood supposed to be glued to the spruce crossmember that is
glued to the
> bottom of the fuselage?
> Thanks,
> Jeff
Message 4
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Subject: | Grega GN-1 Biplane Questions |
Hi,
There was some discussion on the list of the Grega gn-1 biplane that was for sale
on Barnstormers recently. I bought it and managed to get it home and have some
questions as a new builder.
First some background;
I found it is pretty much a plans-built Grega GN-1 with steel tube fuselage and
a larger/heavier engine than is typical. The biplane part is from the St. Croix/Chad
Willie "Aeriel Pietenpol" plans, which came with the plane and now make
more sense, as essentially they are add on wings for a regular Pietenpol, along
with some stuts and wires.
I did manage to find a similar plane, in that it has same rigging and basic configuration.
(Its in St. Louis at a museum.. seems odd to be building something
others put in museums..).
http://www.airandspacemuseum.org/photos%20Aug%2007/aPietenpol.jpg
Anyway to my questions;
There were two Grega specific items I wondered about; First, it has an .026 aircraft
aluminum leading edge, which is attached with lots of brads, but not glued.
I recall the Grega plans specify that kind of leading edge, but should it
be glued? From moving it is coming kind of loose, it would be easy to retack it
or to glue it, but wondered what the opinions would be on this.
Second, the passenger seat base is supported by a couple diagonal steel tubes that
are too close to the sides of the fuselage for me to comfortably fit my legs
in. Is there any way to know if they are load bearing and their design is key
to safety, they look like they could easily be cut/replaced with the same weight
tubes arched a bit to make for more leg room.
Any tips on creating the leading edge? Think it would be odd to have one wing skinned
in wood and one in aluminum, and suspect I will end up going aluminum to
match the one that is done. While by bottom Aeriel/St. Croix wing is pretty
well built, it doesn't have the leading edge spar built. I have head bannister
railing is commonly used, but would like more information, like .. if you use
aluminum for a leading edge, and you use a bannister railing for the spar, is
it supposed to support the leading edge.. meaning having same profile.. and would
it then be bradded and/or glued (T-88 I presume.)
This list is one of the things that helped convince me to go for the plane, in
that I saw a lot of good information flowing back and forth. I am in the EAA and
it is a great place to be to build high perf metal kit planes, or composite
ones, but they were kind of light on folks interested in wood, steel tube and
fabric, though there are a lot of good guys there.
Any suggestions would be appreciated.
Thanks,
Jim
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=141388#141388
Attachments:
http://forums.matronics.com//files/p19_132.jpg
Message 5
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Subject: | Front seat attachment |
Skip,
Thanks much. I think Oscar did, too.
Jeff
>
>Jeff, I glued mine.
>Skip
>
>
>> [Original Message]
>> From: Jeff Boatright <jboatri@emory.edu>
>> Is that plywood supposed to be glued to the spruce crossmember that is
>glued to the
>> bottom of the fuselage?
>> Thanks,
> Jeff
Message 6
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Subject: | Re: Front seat attachment |
Hans,
Thanks much. The fellow who built the plane in '76 did such a great
job otherwise that it just seemed strange.
Jeff
>Jeff,
>
>My interpretation of the drawings was; yes all glued.
>Including to the Ash cross member at the bottom.
>
>Hans
>
>
>-----Original Message-----
>From: Jeff Boatright <jboatri@emory.edu>
>To: pietenpol-list@matronics.com
>Sent: Tue, 23 Oct 2007 3:38 pm
>Subject: Pietenpol-List: Front seat attachment
>
><<mailto:jboatri@emory.edu>jboatri@emory.edu>
>
>Pieters,
>
>In repairing damage to our fuselage, we found that the front seat
>was held in only by two wood screws through the seat back. The front
>vertical is made of a couple of 1x1 spruce sticks (the framing) and
>a plywood web with a cut-out for control torque tube. Is that
>plywood supposed to be glued to the spruce crossmember that is glued
>to the bottom of the fuselage?
>
>Thanks,
>
>Jeff
>--
>______
Message 7
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Subject: | Re: Grega GN-1 Biplane Questions |
was this the GN-1 that was in Mesa, AZ?
if so make sure you THOROUGHLY check the fuse for Black Widow nests. I saw
that plane months ago and it was full of them!
----- Original Message -----
From: "jimd" <jlducey@hotmail.com>
Sent: Tuesday, October 23, 2007 4:04 PM
Subject: Pietenpol-List: Grega GN-1 Biplane Questions
>
> Hi,
> There was some discussion on the list of the Grega gn-1 biplane that was
> for sale on Barnstormers recently. I bought it and managed to get it home
> and have some questions as a new builder.
>
> First some background;
> I found it is pretty much a plans-built Grega GN-1 with steel tube
> fuselage and a larger/heavier engine than is typical. The biplane part is
> from the St. Croix/Chad Willie "Aeriel Pietenpol" plans, which came with
> the plane and now make more sense, as essentially they are add on wings
> for a regular Pietenpol, along with some stuts and wires.
>
> I did manage to find a similar plane, in that it has same rigging and
> basic configuration. (Its in St. Louis at a museum.. seems odd to be
> building something others put in museums..).
>
> http://www.airandspacemuseum.org/photos%20Aug%2007/aPietenpol.jpg
>
> Anyway to my questions;
>
> There were two Grega specific items I wondered about; First, it has an
> .026 aircraft aluminum leading edge, which is attached with lots of brads,
> but not glued. I recall the Grega plans specify that kind of leading edge,
> but should it be glued? From moving it is coming kind of loose, it would
> be easy to retack it or to glue it, but wondered what the opinions would
> be on this.
>
> Second, the passenger seat base is supported by a couple diagonal steel
> tubes that are too close to the sides of the fuselage for me to
> comfortably fit my legs in. Is there any way to know if they are load
> bearing and their design is key to safety, they look like they could
> easily be cut/replaced with the same weight tubes arched a bit to make for
> more leg room.
>
> Any tips on creating the leading edge? Think it would be odd to have one
> wing skinned in wood and one in aluminum, and suspect I will end up going
> aluminum to match the one that is done. While by bottom Aeriel/St. Croix
> wing is pretty well built, it doesn't have the leading edge spar built. I
> have head bannister railing is commonly used, but would like more
> information, like .. if you use aluminum for a leading edge, and you use a
> bannister railing for the spar, is it supposed to support the leading
> edge.. meaning having same profile.. and would it then be bradded and/or
> glued (T-88 I presume.)
>
> This list is one of the things that helped convince me to go for the
> plane, in that I saw a lot of good information flowing back and forth. I
> am in the EAA and it is a great place to be to build high perf metal kit
> planes, or composite ones, but they were kind of light on folks interested
> in wood, steel tube and fabric, though there are a lot of good guys there.
>
> Any suggestions would be appreciated.
>
> Thanks,
>
> Jim
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=141388#141388
>
>
> Attachments:
>
> http://forums.matronics.com//files/p19_132.jpg
>
>
>
Message 8
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Subject: | Re: Grega GN-1 Biplane Questions |
Yes it was the one, and I have spent about 8 hrs cleaning/vacuuming it so far,
and plan on spending more time on it. Amazing how much dust wings can hold by
the way... may have been partly cleaned when I got there as it wasn't too bad.
I pulled all the inspection plates and found a few webs, but not that bad.
It appears to be well built, love the Bucker Jungmann engine, should be really
fun, but have a number of things to work on, like getting the landing gear geometry
right, figuring out the rigging, etc.
Should be an adventure. May be the heaviest Pietenpol derived plane when its done
though, with the spare wing and heavy engine.
Jim
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=141402#141402
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