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Ray.R.Doerr(at)sprint.com
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 Posted: Fri Apr 25, 2008 8:00 am Post subject: Rudder Stop Sheared Off |
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During the process of getting my RV-10 ready for paint (Yes, I know it’s been 2 years) I discovered that my Rudder was hitting the aft skin of the Vertical Stab. After looking at it further, I notice one of my Rudder Stops that are riveted to the top hinge half of the bottom hinge was missing. The heads of the three AN470-4 rivets were still in the hinge half. A simply touch and they popped right out.
Now I was thinking I was going to have to duplicate another stop and rivet it on, but the hinge halves are quiet close together. Then it dawned on me that the Rudder stop may have fallen into the rudder bottom. Sure enough, that is where it was. The 3 rivets that hold this to the hinge were sheared off clean. The only thing I can think of is that when I was in Florida, my Tow Bar on the Rudder Pedals had gotten loose and allow the rudder to get slammed to the stop. No other damage found.
So I thought about this for a while and thought this could likely happen again if I don’t change anything. So I decided to drill out the rivets to #28 and use #6 steel screws with stopnuts for both rudder stops. Hopefully the steel #6 screws will be much stronger in shear then the AN470-4 rivets.
Thank You
Ray Doerr
N519RV (40250) Currently down for Paint
[quote][b]
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Tim Olson
Joined: 25 Jan 2007
Posts: 2879
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| Posted: Fri Apr 25, 2008 8:33 am Post subject: Rudder Stop Sheared Off |
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Ray,
This has happened to more than one person in the past. The last
one was Scott Schmidt. He had some pretty high winds while
he was tied down in Vegas that broke his rudder lock, and his
rudder flapped and sheared the same rivets. I know I've heard
of one or two others, as well. In fact, I think for one person
it actually broke the rudder stop aluminum, but I'm not positive
about that. So adding screws might not hurt, but you still may
have the stop tabs break off.
Either way, make sure you have a really good rudder gust
lock:
http://www.myrv10.com/tips/accessories/control_locks/index.html
It may be that plastic won't do it for you, as depending on
the design, high winds could snap the plastic tubes. I
suppose if I wanted to toughen mine up, I could have glassed
over the PVC, or done some work with strong aluminum tubing.
Tim
Doerr, Ray R [NTK] wrote:
| Quote: | During the process of getting my RV-10 ready for paint (Yes,
I know it’s been 2 years) I discovered that my Rudder was hitting the
aft skin of the Vertical Stab. After looking at it further, I notice
one of my Rudder Stops that are riveted to the top hinge half of the
bottom hinge was missing. The heads of the three AN470-4 rivets were
still in the hinge half. A simply touch and they popped right out.
Now I was thinking I was going to have to duplicate another
stop and rivet it on, but the hinge halves are quiet close together.
Then it dawned on me that the Rudder stop may have fallen into the
rudder bottom. Sure enough, that is where it was. The 3 rivets that
hold this to the hinge were sheared off clean. The only thing I can
think of is that when I was in Florida, my Tow Bar on the Rudder Pedals
had gotten loose and allow the rudder to get slammed to the stop. No
other damage found.
So I thought about this for a while and thought this could
likely happen again if I don’t change anything. So I decided to drill
out the rivets to #28 and use #6 steel screws with stopnuts for both
rudder stops. Hopefully the steel #6 screws will be much stronger in
shear then the AN470-4 rivets.
Thank You
*Ray Doerr*
*N519RV (40250) Currently down for Paint*
*
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| | - The Matronics RV10-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?RV10-List |
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