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08-12-2017, 08:07 AM
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Join Date: Jan 2005
Location: NC25
Posts: 3,507
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Quality of build / best practices
One of my friends that is a serious RV Flyer that wants a new RV instead of upgrading his RV sent me this photo of an RV he was looking at purchasing.
Click on Thumbnail to enlarge.
This one simple photo brings up lots of questions about the build quality of this aircraft.
Yes this one photo makes me question what will be found when looking at everything on this airplane especially stuff that I cannot see.
Had less than $1 USD been spent of three (3) additional parts used in assembly of this aircraft build, I would feel a lot better about what is going to be found looking over the rest of the aircraft. I would not expect to find something like this on an RV that is trying to be sold at very high price.
Seeing this one photo, I told the prospective buyer to run don't walk away from the airplane at the price the seller was asking.
__________________
Gary A. Sobek
NC25 RV-6 Flying
3,400+ hours
Where is N157GS
Building RV-8 S/N: 80012
To most people, the sky is the limit.
To those who love aviation, the sky is home.
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08-12-2017, 08:18 AM
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Join Date: Oct 2009
Location: Victoria, BC, Canada
Posts: 3,932
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Okay, i'll admit ignorance... I don't see an issue here... What am I missing?
__________________
Rob Prior
1996 RV-6 "Tweety" C-FRBP (formerly N196RV)
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08-12-2017, 08:20 AM
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Join Date: Aug 2014
Location: Watertown, NY
Posts: 38
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Guess
I call rivet spacing/edge distance.
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08-12-2017, 08:37 AM
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Join Date: May 2006
Location: LL10, Naperville, IL.
Posts: 68
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Locknuts on pushrod and washer under cotter pin are missing.
Stewart Willoughby, 6 panel.
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08-12-2017, 08:39 AM
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Join Date: Nov 2006
Location: Savannah, GA
Posts: 1,029
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Quote:
Originally Posted by Snowflake
Okay, i'll admit ignorance... I don't see an issue here... What am I missing?
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Yeah, I'm missing something here too. Perhaps an extra set of screws/nutplates on the trim actuator cover? Maybe? But not having the plans on-hand or knowing what model I'm looking at, perhaps this is per print?
On second glance, perhaps jam nuts on the thread rod, and a washer on the clevis pin?
Edit, got beat...
__________________
RV-7ER - finishing kit and systems installation
There are two kinds of fool in the world. The first says "this is old, and therefore good"; the second says "this is new, and therefore better".
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08-12-2017, 08:42 AM
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Join Date: Jul 2016
Location: Worland, Wyoming
Posts: 1,365
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The shaft on the trim motor/tab is missing the stop nuts.
lol I got beat too.
__________________
Jereme Carne
PPL
RV-7A Emp. done
Wings done
Fuselage done
Finish kit almost done
Exempt but gladly paying!
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08-12-2017, 08:46 AM
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Join Date: Feb 2005
Location: 20km outside of Zurich, Switzerland
Posts: 468
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- Not build according Vans plan.
- Ricet spacing and how the rivet are set on the tab attachmet.
- Missing washer by the cotter pin.
- Paint on plastic parts ... solvent may be affect the strengh of it (just dont paint it)
- Looks not used at all ... rod will scuff on skin (bad design by Vans).
- Two holes in the rudder skin!?
__________________
Dominik
RV-7A, TMX-IO-320, FM-150, Sensenich FP
Flying since 28. April 2016
Last edited by swisseagle : 08-12-2017 at 08:49 AM.
Reason: spelling
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08-12-2017, 08:51 AM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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Quote:
Originally Posted by Stoo
Locknuts on pushrod and washer under cotter pin are missing.
Stewart Willoughby, 6 panel.
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Interestingly the plans do not show a locknut on the pushrod end.
The aft two screws are too far aft. Perhaps one of the platenut rivet holes was used as the screw hole?
The location of the removable panel is a little inboard of standard and the trim tab horn is different, showing that this probably was a later modification to an early kit adding the trim removable panel.
Is it an early -6 model?
Added - Vans plans drawings are not really complete in this area. Does a normal kit buyer get these instructions from Ray Allen for the servo installation?
http://www.rayallencompany.com/RACme...onsT2andT3.pdf
Yes, two washers and a lock nut are needed at the clevis end, however if the builder simply looked at Vans drawing 5PP I can see how those parts would get overlooked.
Yes the painter got carried away, but I saw a RV-10 done by a good shop that painted the baffle material attached to the lower cowl inlet. Painters like to paint everything. 
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
Last edited by az_gila : 08-12-2017 at 09:04 AM.
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08-12-2017, 09:39 AM
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Join Date: Jan 2005
Location: NC25
Posts: 3,507
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Quote:
Originally Posted by Stoo
Locknuts on pushrod and washer under cotter pin are missing.
Stewart Willoughby, 6 panel.
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That is the FIRST thing that I see.
__________________
Gary A. Sobek
NC25 RV-6 Flying
3,400+ hours
Where is N157GS
Building RV-8 S/N: 80012
To most people, the sky is the limit.
To those who love aviation, the sky is home.
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08-12-2017, 10:47 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,516
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The odd spaced rivets on the pivot attached to the trim tab, and the pivot is not tight to the trim tab. The last, lower on the picture, screw is miss aligned to the dimple in the trim servo cover.
The rivet thing would be the one that turned me off, but the combination says to look closer at other areas.
edit-this trim servo is located farther inboard than my 7. I has a foot on both sides of the pivot lever riveted to the trim tab. Is this all wrong or is it a different design on other RV models?
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
Last edited by BillL : 08-12-2017 at 10:53 AM.
Reason: Looked more carefully.
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