Today's Message Index:
----------------------
1. 12:53 AM - Longeron Bending (Bruce Peters)
2. 04:19 AM - Re: Longeron Bending (Chenoweth)
3. 06:07 AM - Re: Longeron Bending (Michael Schipper)
4. 08:49 PM - Re: Longeron Bending (Bruce Peters)
5. 08:52 PM - Re: Longeron Bending (Bruce Peters)
Message 1
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| Subject: | Longeron Bending |
Hi all,
I'm about to try and bend the F718 longerons for my RV9A and I am terrified
at the prospect. Other than the fuel tanks this is what has kept me awake
at night thinking about it. I did an archive search and saw a couple ideas
but was wondering if there was anymore wisdom out there I can lean on.
Pictures would be really appreciated as well. Thanks in advance.
Bruce Peters
RV9A Fuselage
Bakersfield, CA
Message 2
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| Subject: | Re: Longeron Bending |
Bruce,
I found the technique described in the Orndorff video to be a good one
and used it. I particularly liked the idea of clamping the two together
to get the bends equal. I have no metalwork background and had my share
of problems but none turned out to be insurmountable. I will caution
you that I found that the "template" Van's provided for the bend curve
was not accurate in length. Since I didn't expect that I had made no
effort to confirm that the length of the bend as provided by the
dimensions was the same as the length of the template. Mine was off by
3/4". You might be able to imagine the distress around here till I
figured out that the problem was the template and not something I'd done
wrong. My 7A neighbor suggested using the 721B as a bend guide and that
worked fine. That by, the way, is the technique described in the video
and also in the instructions for the RV7s.
Your next excitement will most likely be bending the side skin. I
wouldn't use the Orndorff technique for this. I did some experimenting
with it and found that, for me, there was no obvious way to go back and
adjust the curve once you start. I used the Van's technique with great
success.
Bill - RV9
Albion, Maine
----- Original Message -----
From: Bruce Peters
To: rv9-list@matronics.com
Sent: Tuesday, February 06, 2007 3:51 AM
Subject: RV9-List: Longeron Bending
Hi all,
I'm about to try and bend the F718 longerons for my RV9A and I am
terrified at the prospect. Other than the fuel tanks this is what has
kept me awake at night thinking about it. I did an archive search and
saw a couple ideas but was wondering if there was anymore wisdom out
there I can lean on. Pictures would be really appreciated as well.
Thanks in advance.
Bruce Peters
RV9A Fuselage
Bakersfield, CA
-------------------------------------------------------------------------
-----
2/1/2007 2:28 PM
Message 3
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| Subject: | Re: Longeron Bending |
Hi Bruce,
Yes, bending the longerons is a time-consuming and somewhat tedious
project, but once you're done, you're done. Just use the template and
the canopy deck as guides and go slowly. It's not that difficult.
http://www.my9a.com/fuse5.asp#092204
Regards,
Mike Schipper
RV-9A - N63MS - 120 hours - www.my9a.com
RV-10 - #40576 - Wings
On Feb 6, 2007, at 2:51 AM, Bruce Peters wrote:
> Hi all,
>
> I=92m about to try and bend the F718 longerons for my RV9A and I am
> terrified at the prospect. Other than the fuel tanks this is what
> has kept me awake at night thinking about it. I did an archive
> search and saw a couple ideas but was wondering if there was
> anymore wisdom out there I can lean on. Pictures would be really
> appreciated as well. Thanks in advance.
>
>
> Bruce Peters
>
> RV9A Fuselage
>
> Bakersfield, CA
Message 4
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| Subject: | Longeron Bending |
Bill,
Thanks for the reply. I appreciate the tip on the video and will order
that. I had noticed the measurements on the drawing were not accurate
and
just assumed that they were "not to scale" but that the general curve
was
accurate. However, I'm glad to know that I wasn't just seeing things.
There have been a couple other areas in the drawings so far that just
seemed
a little off but mostly I have been able to figure it out. On bending
the
side skin I hadn't read far enough ahead to realize it was going to be a
challenge. I was hoping maybe it was going to assume the shape of the
longerons without much fuss. Well, more to lay awake at night about!!!
Again, thanks for the help.
Bruce
-----Original Message-----
From: owner-rv9-list-server@matronics.com
[mailto:owner-rv9-list-server@matronics.com] On Behalf Of Chenoweth
Sent: Tuesday, February 06, 2007 4:13 AM
Subject: Re: RV9-List: Longeron Bending
Bruce,
I found the technique described in the Orndorff video to be a good one
and
used it. I particularly liked the idea of clamping the two together to
get
the bends equal. I have no metalwork background and had my share of
problems but none turned out to be insurmountable. I will caution you
that
I found that the "template" Van's provided for the bend curve was not
accurate in length. Since I didn't expect that I had made no effort to
confirm that the length of the bend as provided by the dimensions was
the
same as the length of the template. Mine was off by 3/4". You might be
able to imagine the distress around here till I figured out that the
problem
was the template and not something I'd done wrong. My 7A neighbor
suggested
using the 721B as a bend guide and that worked fine. That by, the way,
is
the technique described in the video and also in the instructions for
the
RV7s.
Your next excitement will most likely be bending the side skin. I
wouldn't
use the Orndorff technique for this. I did some experimenting with it
and
found that, for me, there was no obvious way to go back and adjust the
curve
once you start. I used the Van's technique with great success.
Bill - RV9
Albion, Maine
----- Original Message -----
From: Bruce Peters <mailto:BPETERS2@bak.rr.com>
Sent: Tuesday, February 06, 2007 3:51 AM
Subject: RV9-List: Longeron Bending
Hi all,
I'm about to try and bend the F718 longerons for my RV9A and I am
terrified
at the prospect. Other than the fuel tanks this is what has kept me
awake
at night thinking about it. I did an archive search and saw a couple
ideas
but was wondering if there was anymore wisdom out there I can lean on.
Pictures would be really appreciated as well. Thanks in advance.
Bruce Peters
RV9A Fuselage
Bakersfield, CA
href="http://www.matronics.com/Navigator?RV9-List">http://www.matronics
.com/
Navigator?RV9-List
href="http://forums.matronics.com">http://forums.matronics.com
_____
Message 5
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| Subject: | Longeron Bending |
Hi Mike,
Thanks for the advice and link to your site. That helps a lot. I
realized
after looking at your pictures I forgot to put the radius in the end of
the
longeron when I trimmed out the piece. Do you think that's much an
issue?
Or should I shorten up the longeron just a bit to accommodate a radius?
Again, thanks for the help.
Bruce
-----Original Message-----
From: owner-rv9-list-server@matronics.com
[mailto:owner-rv9-list-server@matronics.com] On Behalf Of Michael
Schipper
Sent: Tuesday, February 06, 2007 6:07 AM
Subject: Re: RV9-List: Longeron Bending
Hi Bruce,
Yes, bending the longerons is a time-consuming and somewhat tedious
project,
but once you're done, you're done. Just use the template and the canopy
deck
as guides and go slowly. It's not that difficult.
http://www.my9a.com/fuse5.asp#092204
Regards,
Mike Schipper
RV-9A - N63MS - 120 hours - www.my9a.com
RV-10 - #40576 - Wings
On Feb 6, 2007, at 2:51 AM, Bruce Peters wrote:
Hi all,
I'm about to try and bend the F718 longerons for my RV9A and I am
terrified
at the prospect. Other than the fuel tanks this is what has kept me
awake
at night thinking about it. I did an archive search and saw a couple
ideas
but was wondering if there was anymore wisdom out there I can lean on.
Pictures would be really appreciated as well. Thanks in advance.
Bruce Peters
RV9A Fuselage
Bakersfield, CA
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