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                           RV9-List Digest Archive
                                      ---
                     Total Messages Posted Tue 08/05/03: 3
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Today's Message Index:
----------------------
 
     1. 08:10 AM - Re: Fuel Vent Screens  (Leland)
     2. 02:43 PM - Re: Taking the sag out of the wing spars/oil canning  (Mike Duiven)
     3. 03:54 PM - Re: Taking the sag out of the wing spars/oil canning  (JohnCClarkVA@cs.com)
 
 
 
________________________________  Message 1  _____________________________________


Time: 08:10:50 AM PST US
From: Leland <Federigo@pacbell.net>
Subject: Re: RV9-List: Fuel Vent Screens

--> RV9-List message posted by: Leland <Federigo@pacbell.net>

Albert, that sounds like one of my tricks. I'm going to go grind the tip
off right now.
Leland

"Also, after you bump your head on the tip of the 45 degree
                angle Van has us trim the bulkhead fitting to, you will
probably smooth it
                off somewhat. Don't ask me how I know.
                Albert Gardner"






________________________________  Message 2  _____________________________________


Time: 02:43:16 PM PST US
From: "Mike Duiven" <emduiven@chaffee.net>
Subject: Re: RV9-List: Taking the sag out of the wing spars/oil canning

--> RV9-List message posted by: "Mike Duiven" <emduiven@chaffee.net>

I used a 2"x4" boaed to support the wing while in the Jig.  Had no oil
canning and it measured square in all directions.

Mike D.


----- Original Message -----
From: "Matthew Brandes" <mbrandes@irr.com>
Subject: RV9-List: Taking the sag out of the wing spars/oil canning


> --> RV9-List message posted by: Matthew Brandes <mbrandes@irr.com>
>
> I have my wings mounted in my frame started putting on the skins.  I first
> used a single jack in the center to take the sag out of the spar but it
> doesn't seem to take it all out, especially on the root end.  After
getting
> the skins on, I noticed I had some oil canning in a few sections.
>
> I'm curious for those of you who have or are working on your wings, did
you
> use more than one support to take the sag out?  Do you have any oil
canning
> in your wings?  I need to get a couple more jacks and some plumb bobs to
> make sure everything looks kosher.. but just curious.
>
> Matthew Brandes
> RV-9A Wings
> N523RV
> #90569
>
>






________________________________  Message 3  _____________________________________


Time: 03:54:31 PM PST US
From: JohnCClarkVA@cs.com
Subject: Re: RV9-List: Taking the sag out of the wing spars/oil canning

--> RV9-List message posted by: JohnCClarkVA@cs.com

I used only one jack in the center and had no oil canning.  At times, when the
skins were clecoed or riveted on, the jack carried no load.  Oil canning can be
introduced by twist between the root and tip.  Check that carefully with the
plumb bobs.  You may also loosen the clamps on the tip end, if you have them,
to see if you have a preload causing twist.