Today's Message Index:
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1. 07:38 AM - Fitting wings to fuse (Curt Thompson)
2. 09:11 AM - Re: Fitting wings to fuse (Harvey Richards)
3. 09:12 AM - Re: Fitting wings to fuse (MacDonald Doug)
4. 09:17 AM - Re: Fitting wings to fuse (Harvey Richards)
5. 10:01 AM - Re: Fitting wings to fuse (ronlee)
6. 10:34 AM - Re: Re: Fitting wings to fuse (Curt Thompson)
7. 12:56 PM - Re: Fitting wings to fuse (Harvey Richards)
Message 1
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| Subject: | Fitting wings to fuse |
I'm ready to fit up the wings to the fuselage. Is there a sheet in the
drawings or a page in the "Photo Assembly Guides" that describes how to
this? It looks like 7V10 shows a 75mm dihedral. How do I set the incidence
angle? Is the top of the horizontal stab, bottom of the wing, and the
reference E-A line (7F15) all parallel? I assume that the forward edge of
the right/left wing are aligned (no swept angle).
Curt Thompson
Plans building CH701
Redmond, WA, USA
Message 2
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| Subject: | Re: Fitting wings to fuse |
Mark Townsend did a blog on the Zenith Aero website about fitting the wings. I
think it entailed drilling the forward holes for the wing spar then leaving the
drill bit in place. The rear posistion was set with a string above the main
spars by lining them up.
--------
CH 701
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=259951#259951
Message 3
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| Subject: | Re: Fitting wings to fuse |
Hey Curt, I have to agree that the plans are a little vague in this area. I just
mounted my wings in the last month and had to do some real head scratching
to come up with a plan. The fisrt step is to set up your rear spar mount. The
fit of the inboard end of the training edge against the fuselage kind of sets
where the wing will live.
Once you have the rear of the wing located, run a string down the spar line to
eliminate the forward or rearward sweep in the wings and set the dihedral. I
am at work right now so I don't know which page it is on in the plans but there
is a diagram showing this and some other information there (not a lot).
The incidence angle seems to be set by the location of the front and rear spar
mounts and there is not a lot of adjustment there. To set the dihedral, level
the fuselage and measure up the the spar string at rib #1. This distance should
be 75mm (if I remember correctly).
The biggest advice I can give is don't drill any of the spar holes until you are
sure that everything is as close to perfect as you can get it. Start out with
a pilot hole of 3/32" and drill out to 5/16 in stages. It is possible to make
minor adjustments as you drill the holes out to final size but not a lot.
Hope this helps a bit
Doug MacDonald
CH-701 scratch Builder
NW Ontario, Canada
Do Not Archive
--- On Thu, 8/27/09, Curt Thompson <Curt.Thompson@verizon.net> wrote:
> From: Curt Thompson <Curt.Thompson@verizon.net>
> Subject: Zenith701801-List: Fitting wings to fuse
> To: zenith701801-list@matronics.com
> Received: Thursday, August 27, 2009, 9:28 AM
> --> Zenith701801-List message
> posted by: "Curt Thompson" <Curt.Thompson@verizon.net>
>
> I'm ready to fit up the wings to the fuselage. Is
> there a sheet in the
> drawings or a page in the "Photo Assembly Guides" that
> describes how to
> this? It looks like 7V10 shows a 75mm dihedral.
> How do I set the incidence
> angle? Is the top of the horizontal stab, bottom of
> the wing, and the
> reference E-A line (7F15) all parallel? I assume that
> the forward edge of
> the right/left wing are aligned (no swept angle).
>
> Curt Thompson
> Plans building CH701
> Redmond, WA, USA
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Message 4
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| Subject: | Re: Fitting wings to fuse |
The Blog was under Can-zac and titled Wing Attatch
--------
CH 701
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=259956#259956
Message 5
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| Subject: | Re: Fitting wings to fuse |
Make sure that each wing has the same angle of attack as the other. If they are
even a little it will act as a propeller and you will end up with a heavy wing.
I use a four foot level with a stand off. I leveled from the main spar to the
rear spar and adjusted from wing to wing until they were identical. When all
was right I clamped and drilled.
--------
Ron Lee
Tucson, Arizona
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=259965#259965
Message 6
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| Subject: | Re: Fitting wings to fuse |
That was useful but didn't answer my question about incidence angle. It
seems to me that the angle of the horizontal stab to the wing would be
important.
Curt
-----Original Message-----
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of Harvey
Richards
Sent: Thursday, August 27, 2009 9:17 AM
Subject: Zenith701801-List: Re: Fitting wings to fuse
<lisa.richards@ns.sympatico.ca>
The Blog was under Can-zac and titled Wing Attatch
Message 7
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| Subject: | Re: Fitting wings to fuse |
The direction to the Blog was to answer the question of wing sweep.
--------
CH 701
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=260028#260028
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