Today's Message Index:
----------------------
1. 07:23 AM - Horizontal Stabilizer Ribs (Chenoweth)
2. 07:54 AM - Re: Horizontal Stabilizer Ribs (Michael T. Ice)
3. 08:27 AM - Re: Horizontal Stabilizer Ribs (Hebert, Richard)
Message 1
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| Subject: | Horizontal Stabilizer Ribs |
--> RV9-List message posted by: "Chenoweth" <chenoweth@gwi.net>
I just started the RV9 empennage kit and ran into a snag fitting the 904's to the
front spar.
While the three 1/8 pre-punched holes in the front flange of the ribs match the
three corresponding ones in the spar the top and bottom 3/32 holes in the rib
flange really dont' want to match their partners in the spar flange.
I can get a cleco in them with a lot of bending and pushing but I'm concerned that
when it's time to match drill the skin thru the spar and into the rib I'll
end up with, at best, an oversized hole in the rib and, at worst, two holes in
the front of each rib.
Clearly there is something not bent correctly but I can't figure out what. This
is my first metal airplane (currently I'm a Kitfox builder/flier) so I have
virtually no background to draw on.
Bill Chenoweth
Albion, Maine
Message 2
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| Subject: | Re: Horizontal Stabilizer Ribs |
--> RV9-List message posted by: "Michael T. Ice" <aurbo@ak.net>
Bill,
I just finished the HS about 3 weeks ago. You will run into all sorts of
little problems like this. Pushing and bending is part of the process, with
limitations of course.
Did you "Flute" the ribs?
Mike Ice
Anchorage, Alaska
RV-9 standard build, elevators
----- Original Message -----
From: "Chenoweth" <chenoweth@gwi.net>
Subject: RV9-List: Horizontal Stabilizer Ribs
> --> RV9-List message posted by: "Chenoweth" <chenoweth@gwi.net>
>
> I just started the RV9 empennage kit and ran into a snag fitting the 904's
to the front spar.
>
> While the three 1/8 pre-punched holes in the front flange of the ribs
match the three corresponding ones in the spar the top and bottom 3/32 holes
in the rib flange really dont' want to match their partners in the spar
flange.
>
> I can get a cleco in them with a lot of bending and pushing but I'm
concerned that when it's time to match drill the skin thru the spar and into
the rib I'll end up with, at best, an oversized hole in the rib and, at
worst, two holes in the front of each rib.
>
> Clearly there is something not bent correctly but I can't figure out what.
This is my first metal airplane (currently I'm a Kitfox builder/flier) so I
have virtually no background to draw on.
>
> Bill Chenoweth
> Albion, Maine
>
>
Message 3
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| Subject: | Horizontal Stabilizer Ribs |
--> RV9-List message posted by: "Hebert, Richard" <Richard.Hebert@T-Mobile.com>
Hi Bill,
We built the RV-9A empenage at the Alexander Technical Center in Griffin, GA
and didn't have any problems getting the 904s to line up. You will have to drill
the pre-punched wholes out with the appropriate drill bits and this should
help to get the fit right. If the alignment is off significantly, you may need
Van's to resend you replacement pieces.
I've attached pictures of the front spar before and after riveting. Everything
worked out as planned.
Hope this helps....and happy building...
Richard Hebert/Ray Abadie
Atlanta GA
RV-9A
-----Original Message-----
From: owner-rv9-list-server@matronics.com
[mailto:owner-rv9-list-server@matronics.com]On Behalf Of Chenoweth
Subject: RV9-List: Horizontal Stabilizer Ribs
--> RV9-List message posted by: "Chenoweth" <chenoweth@gwi.net>
I just started the RV9 empennage kit and ran into a snag fitting the 904's to the
front spar.
While the three 1/8 pre-punched holes in the front flange of the ribs match the
three corresponding ones in the spar the top and bottom 3/32 holes in the rib
flange really dont' want to match their partners in the spar flange.
I can get a cleco in them with a lot of bending and pushing but I'm concerned that
when it's time to match drill the skin thru the spar and into the rib I'll
end up with, at best, an oversized hole in the rib and, at worst, two holes in
the front of each rib.
Clearly there is something not bent correctly but I can't figure out what. This
is my first metal airplane (currently I'm a Kitfox builder/flier) so I have
virtually no background to draw on.
Bill Chenoweth
Albion, Maine
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