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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 26320
Location: Livermore CA USA
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 Posted: Thu Apr 28, 2011 2:10 pm Post subject: Cracks Around Rudder Stiffeners... |
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After washing the 'ol RV-8 last night, I noticed that there is about a .5" crack in the .02" skin of the rudder in the *front* of two of the angle stiffeners (towards the leading edge of the rudder). The skin is a little "bulgy" right there, and its possible that I gave that area a good push with my thumb at some point to see if I could get it to flatten out.
Obviously I need to keep an eye on this, but is it anything to worry about, really? I'm just about ready to take the plane in for paint, so if I have to do something about it, I'd rather do it *before* the paint.
Thanks in advance for the feedback,
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Matt "Fox" Dralle
RV-8 #82880 N998RV "Ruby Vixen"
http://www.mattsrv8.com - Matt's RV-8 Construction Log
http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
Status: 170+ Hours TTSN - Paint job is all that's left...
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Matt Dralle
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recapen(at)earthlink.net
Guest
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| Posted: Thu Apr 28, 2011 3:14 pm Post subject: Cracks Around Rudder Stiffeners... |
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I'd rebuild it before paint - my .016 rudder skin had a hangar bump which I
covered with microballoons. It got a second bump and I rebuilt it with a
.020 skin - I have on IO360B1F6 so it was recommended anyway.
No regrets and it was a weekend job...the first part I built and the last
part I built.
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Dale Ensing
Joined: 11 Jan 2006
Posts: 571
Location: Aero Plantation Weddington NC
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| Posted: Thu Apr 28, 2011 3:56 pm Post subject: Cracks Around Rudder Stiffeners... |
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I also have some cracks on my 6A rudder. Cracks are on the first rivets of
the stiffeners. Next to the area where the skin is not supported be either
the stiffener or the leading edge spar of the rudder. It appears the skin is
allowed to flex a bit because the stiffeners are not attached to the spar. I
stop drilled each crack when I first discovered them and they have not
progress further in 5 years. It is on my walk around check list and I look
at them every time I fly.
NOTE when I first found the cracks, I called Van's ....before I completed
the explanation of my problem I was stopped by the 'friendly' tech help guy
who said "you must have a big engine on your 6A don't you" I admitted I have
an O-360 with high compression pistons, electronic ignition and constant
speed prop. His next statement "there is your problem!"
I suggest you stop drill the cracks and watch them. If you build a new
rudder before you paint, with no change in the rudder design, you will
probably experience cracks again.
Dale
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Dale Ensing
RV-6A
Aero Plantation
Weddington NC |
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jfogarty(at)tds.net
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| Posted: Fri Apr 29, 2011 8:16 am Post subject: Cracks Around Rudder Stiffeners... |
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Matt, Do you have a photo?
Jim Fogarty
RV9A building
On Thu, Apr 28, 2011 at 5:04 PM, Matt Dralle <dralle(at)matronics.com (dralle(at)matronics.com)> wrote:
[quote]--> RV-List message posted by: Matt Dralle <dralle(at)matronics.com (dralle(at)matronics.com)>
After washing the 'ol RV-8 last night, I noticed that there is about a .5" crack in the .02" skin of the rudder in the *front* of two of the angle stiffeners (towards the leading edge of the rudder). The skin is a little "bulgy" right there, and its possible that I gave that area a good push with my thumb at some point to see if I could get it to flatten out.
Obviously I need to keep an eye on this, but is it anything to worry about, really? I'm just about ready to take the plane in for paint, so if I have to do something about it, I'd rather do it *before* the paint.
Thanks in advance for the feedback,
-
Matt "Fox" Dralle
RV-8 #82880 N998RV "Ruby Vixen"
http://www.mattsrv8.com - Matt's RV-8 Construction Log
http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
Status: 170+ Hours TTSN - Paint job is all that's left...
===========
get="_blank">http://www.matronics.com/Navigator?RV-List
===========
http://forums.matronics.com
===========
-Matt Dralle, List Admin.
="_blank">http://www.matronics.com/contribution
===========
[b]
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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 26320
Location: Livermore CA USA
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| Posted: Fri Apr 29, 2011 8:49 pm Post subject: Cracks Around Rudder Stiffeners... |
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Har har har... Very funny. Okay, you're right. I do...  I'll post some when I get back from the WCFC on Monday.
WCFC is tons of fun, btw; I highly recommend!
Matt
At 01:14 PM 4/29/2011 Friday, you wrote:
| Quote: | I would be willing to bet Matt has 1080P HD video of the crack from 3 different viewpoints.
Robin
Do Not Archive
On Fri, Apr 29, 2011 at 12:11 PM, jfogarty <http://tds.net>tds.net <<mailto:jfogarty(at)tds.net>jfogarty(at)tds.net> wrote:
Matt, Do you have a photo?
Jim Fogarty
RV9A building
On Thu, Apr 28, 2011 at 5:04 PM, Matt Dralle <<mailto:dralle(at)matronics.com>dralle(at)matronics.com> wrote:
After washing the 'ol RV-8 last night, I noticed that there is about a .5" crack in the .02" skin of the rudder in the *front* of two of the angle stiffeners (towards the leading edge of the rudder). The skin is a little "bulgy" right there, and its possible that I gave that area a good push with my thumb at some point to see if I could get it to flatten out.
Obviously I need to keep an eye on this, but is it anything to worry about, really? I'm just about ready to take the plane in for paint, so if I have to do something about it, I'd rather do it *before* the paint.
Thanks in advance for the feedback,
-
Matt "Fox" Dralle
RV-8 #82880 N998RV "Ruby Vixen"
<http://www.mattsrv8.com>http://www.mattsrv8.com - Matt's RV-8 Construction Log
<http://www.youtube.com/MattsRV8>http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
Status: 170+ Hours TTSN - Paint job is all that's left...
===========
get="_blank"><http://www.matronics.com/Navigator?RV-List>http://www.matronics.com/Navigator?RV-List
===========
http://forums.matronics.com
===========
-Matt Dralle, List Admin.
="_blank"><http://www.matronics.com/contribution>http://www.matronics.com/contribution
===========
t="_blank">http://www.matronics.com/Navigator?RV-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
|
-
Matt "Fox" Dralle
RV-8 #82880 N998RV "Ruby Vixen"
http://www.mattsrv8.com - Matt's RV-8 Construction Log
http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
Status: 170+ Hours TTSN - Paint job is all that's left...
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
|
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Matt Dralle
Matronics Email List Administrator |
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