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01-02-2013, 10:28 PM
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Join Date: Feb 2012
Location: Wichita, KS
Posts: 24
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Wow, I've never flown an RV10, but that looks like a best case scenario after losing complete elevator control.
__________________
Regards,
Nathan Harwood
RV-14 Wing Kit Ordered!
#140081
2012/2013 dues paid
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01-03-2013, 05:26 AM
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Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,840
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Adam, the pushrod pivots on a ball and socket type joint. The bolt is not a hinge point or pivot. The ball is.
Only when the bolt itself is a pivot point, like the rudder cable ends, is a castellated nut and cotter key required, as is the case on most RV's.
Sounds like this particular case was a builder/inspector error.
__________________
Pierre Smith
RV-10, 510 TT
RV6A (Sojourner) 180 HP, Catto 3 Bl (502Hrs), gone...and already missed
Air Tractor AT 502B PT 6-15 Sold
Air Tractor 402 PT-6-20 Sold
EAA Flight Advisor/CFI/Tech Counselor
Louisville, Ga
It's never skill or craftsmanship that completes airplanes, it's the will to do so,
Patrick Kenny, EAA 275132
Dues gladly paid!
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01-03-2013, 06:38 AM
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Join Date: Jan 2005
Location: Tampa, FL
Posts: 2,861
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__________________
Todd "I drink and know things" Stovall
PP ASEL-IA
RV-10 N728TT - Flying!
WAR EAGLE!
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01-03-2013, 06:38 AM
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Moderator/Tech Counselor
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Join Date: Jan 2005
Location: East Troy, WI
Posts: 1,983
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WOW! Really lucky it failed close to the ground. God was with them, for sure!!
Roberta
__________________
Roberta Hegy
Built/Flew an RV-7A
Air Troy Estates, East Troy, WI
Ford Expedition and TRICE "Q"
Built Glen L "ZIP" Classic Outboard Runabout and Super Spartan Hydroplane
Glen L Torpedo
Last edited by robertahegy : 01-03-2013 at 06:41 AM.
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01-03-2013, 06:44 AM
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Join Date: Oct 2005
Posts: 1,516
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Change Thread Title
Could someone change the thread title,
before this error goes down in history as a RV-10 Nose Gear failure.
Next thing people are going to ask Vans for a redesigned nose gear.
[Done; S. Buchanan]
__________________
Ernst Freitag
RV-8 finished (sold)
RV-10 Flyer 600 plus hours
Running on E10 mogas
Don't believe everything you know.
Last edited by Sam Buchanan : 01-03-2013 at 07:00 AM.
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01-03-2013, 09:19 AM
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Join Date: Mar 2010
Location: Blairsville,GA
Posts: 53
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RV-10 accident
The push rods will also become disconnected if they are not deep enough into the rod ends.
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01-03-2013, 09:20 AM
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Join Date: Dec 2009
Location: Boulder, CO
Posts: 4,435
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I bought one of these http://tinyurl.com/adewcw2 to measure the running torques on nuts. It's a 1/4" beam torque wrench, 0 - 60 inch pound capacity. So far I haven't needed to use it on my slow-build RV-3B but it's here for when I do.
Click torque wrenches don't measure running torque, at least I don't know how to get them to do that. Running torque is added to the specified torque to get the torque that we actually use for installation.
There are self-locking castellated nuts available, that have the nylon insert as well as accepting a cotter pin. The ones I've seen are shear nuts. Sorry, I don't know their part number.
Dave
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01-03-2013, 09:35 AM
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Join Date: Jan 2007
Location: Battleground
Posts: 4,348
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David - that is a great little tool. I ordered one.
Making no assumptions about this particular incident, even a severely under torqued nyloc nut is very unlikely to fall off of a bolt if the proper thread protrusion is there. I know this from my own personnal experience.
Be very careful using a torque wrench on the AN3 stuff, especially with the click type wrenches. There are many posts archived here where somebody broke the bolt, twisted it right off. Some of the nuts, expecially on control surfaces, are difficult to impossible to get a torque wrench on even with a crows foot or other extension and adding those devices makes operator error even more likely.
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Smart People do Stupid things all the time. I know, I've seen me do'em.
RV6 - Builder/Flying
Bucker Jungmann
Fiat G.46 -(restoration in progress, if I have enough life left in me)
RV1 - Proud Pilot.
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01-03-2013, 10:43 AM
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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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Quote:
Originally Posted by Auburntsts
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Anyone else unable to access this link??
__________________
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."
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01-03-2013, 10:44 AM
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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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Quote:
Originally Posted by myrv6180
The push rods will also become disconnected if they are not deep enough into the rod ends.
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True, but if you look at the drawings, there is a jam nut, and it is safety wired.
__________________
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."
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