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10-01-2013, 07:26 PM
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been here awhile
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Join Date: Dec 2004
Location: North Alabama
Posts: 4,301
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Quote:
Originally Posted by rvbuilder2002
Pole vaulted may be a more appropriate statement.
Sorry for probably crossing the line (and this will probably get deleted by a moderator) but advertiser or not, this sounds far to much like scare tactic marketing to me.
The accident in Canada is well investigated and documented. The cause had nothing to do with the reinforcement part being promoted here.
The most recent accident is in early stages of an investigation. Making an assumption that this part would/might have prevented it is totally out of line.
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Not only does this moderator not have any intention of deleting Scott's post, I totally agree with it.
I suspect nearly any part of the airframe can be damaged if not constructed properly/carefully as noted in several threads recently. This does not constitute a design flaw, however.
Last edited by Sam Buchanan : 10-01-2013 at 07:30 PM.
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10-01-2013, 07:32 PM
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Join Date: Jan 2005
Location: KASH
Posts: 498
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Quote:
Originally Posted by rvbuilder2002
Sorry for probably crossing the line (and this will probably get deleted by a moderator)
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Hopefully not, it needed to be said.
I think Allan has some great ideas, but I'd be really cautious about reinforcing a piece of primary structure without any analysis of why the part is cracking in the first place. Making a piece of structure stiffer than it was originally designed might fix one problem - if it even exists - but could cause problems elsewhere.
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Dave Setser
RV-7 N701ED FLYING!
Nashua, NH (KASH)
Last edited by Thermos : 10-01-2013 at 07:35 PM.
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10-01-2013, 07:56 PM
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Join Date: Dec 2008
Location: Big Sandy, WY
Posts: 2,567
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Alan is telling us about "emails" reporting cracks. Seems this forum would have been all over it. Maybe the moderators have a cover up going. We'll call it "Tailgate".
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Actual repeat offender.
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10-01-2013, 07:58 PM
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Join Date: Jan 2005
Location: Round Rock, TX
Posts: 3,778
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Quote:
Originally Posted by aerhed
Alan is telling us about "emails" reporting cracks. Seems this forum would have been all over it. Maybe the moderators have a cover up going. We'll call it "Tailgate".
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Now that was TOO Funny!  Wonder how many of the tail cracked airplanes are Sliders vs Tip-up? Hang in there Alan. 
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Reiley
Retired N622DR - Serial #V7A1467
VAF# 671
Repeat Offender / Race 007
Friend of the RV-1
Last edited by LifeofReiley : 10-01-2013 at 08:02 PM.
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10-01-2013, 08:00 PM
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Join Date: Jan 2005
Location: Twin Cities, MN
Posts: 1,565
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Quote:
Originally Posted by DanH
Caution: Conclusions being jumped.
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Agreed. Still, you have to admit it's a fun game.

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Brad Benson, Maplewood MN.
RV-6A N164BL, Flying since Nov 2012!
If you're not making mistakes, you're probably not making anything
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10-01-2013, 08:40 PM
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Join Date: Oct 2007
Location: Macon, GA
Posts: 499
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Quote:
Originally Posted by DanH
Caution: Conclusions being jumped.
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concur....
And the engineer in me has to state (as someone else already has) that slapping a doubler on something isn't always productive....
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Macon, GA (KMCN)
RV-7, Niner Fife Victor
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10-01-2013, 09:03 PM
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Join Date: Dec 2009
Location: Boulder, CO
Posts: 4,435
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Even so, a jam nut wrench that works with a torque wrench and the rod end would be a useful thing.
Dave
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10-01-2013, 09:17 PM
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Join Date: Feb 2005
Location: Victoria B.C.
Posts: 1,266
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In the next few years as more and more of Vans aircraft get airborne there will be more and more areas that fail for some reason or another. If we get hyper paranoid over all of these failures and beef them up with dubious parts the plane will be so heavy that it will never leave the ground thus solving all inflight failures. I believe that if the plane is built to Vans specifications and has suffered no damage on the ground or inflight by over stressing these planes are well designed and safe as they are.
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10-01-2013, 09:26 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,420
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If you go to the video on the Anti Splat site where he talks about the stab mount reinforcement plates, at the three minute to three and-a-half minute area there are photos of a couple parts that have cracked in use. These photos were taken from threads here at VAF.
http://antisplataero.com/Videos.html The video is the second one in line.
Also, here is an old thread to look at. http://www.vansairforce.com/communit...ighlight=crack
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011 
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
Last edited by Mike S : 10-01-2013 at 09:41 PM.
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10-01-2013, 10:09 PM
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Join Date: Mar 2005
Location: Calgary, Canada
Posts: 5,766
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From the Canadian accident, we can take lessons about observing Vne, Va, balancing of control surfaces and finally that rolling G limits can be substantially lower than straight pulls on some aircraft.
I doubt if there is a systemic problem with RV tails when being flown within the defined envelope and being properly constructed or there would be a lot more failures. Many RVs are flown pretty hard.
Beating on an airplane continuously near, at or over the limits certainly hastens fatigue which is why aircraft used regularly for aerobatics are inspected (or should be) more frequently and in a more detailed way (ask Sean Tucker).
This is just food for thought.
We should wait for the full conclusions of the investigation. In the meantime, it does no harm for anyone concerned to thoroughly inspect these areas.
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