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Old 05-26-2016, 08:56 AM
rvbuilder2002 rvbuilder2002 is offline
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 7,557
Default Bigger weld bead doesn't necessarily mean deeper penetration...... .........

As posted in a previous thread about the nose fork, supplemental testing was done on the nose fork at the request of the FAA after a botched landing accident.

A number of different forks were tested (big weld bead, small weld bead, etc.) and all failed under static load at very near the same load value, and well beyond the required load. The FAA was fully satisfied with the results of the testing.

This thread is about cracks that begin at the edge of the fork web, that if allowed to propagate, will likely result in the nose fork disassembling itself.
Any opinions expressed in this message are my own and not necessarily those of my employer.

Scott McDaniels
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")

Last edited by rvbuilder2002 : 05-26-2016 at 11:59 AM.
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Old 05-26-2016, 07:38 PM
DBRuth DBRuth is offline
Join Date: Nov 2013
Location: Cumming,GA
Posts: 77
Default Nose fork inspection

I inspected my nose fork last night, 47 hours, all on pavement. No cracks found. I do treat my nose wheel with the utmost respect, as instructed by Mike Seager and John Albury.
Kit 120797
First flight 8/21/15 what an awesome aircraft!
HOBBS @146
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Old 05-26-2016, 08:56 PM
RFSchaller RFSchaller is offline
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,215

Last annual in March: 438 hours and no cracks. If I find any in the future I'll crank up my under utilized TIG welder and do a weld repair.
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Old 05-29-2016, 10:26 AM
n74846 n74846 is offline
Join Date: Sep 2015
Location: Boca Raton, FL BCT
Posts: 97

Just checked at 106.2 Hobbs. In perfect condition. Any suggestions for appropriate log entry, this will be my first SB since taking possession of the plane. Thanks.
Steve at BCT
Flying a built ELSA
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Old 05-29-2016, 01:50 PM
todehnal todehnal is offline
Join Date: Jan 2005
Location: Kentucky Lakes area in KY
Posts: 915

So far it looks like there are not very many cracks out there. Not sure how many it takes to justify a recurring SB. Hope we can get a count and cause at the end, but I guess that we are stuck with the SB. Oh well.............
2013- RV12, Kit #119. N123M First flight Nov21. It's a keeper!
1998- RV-9 tail kit, built and sold
1989- RV-6 tail kit, built and sold
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Old 05-30-2016, 09:32 AM
cactusman cactusman is offline
Join Date: Oct 2012
Posts: 421

Originally Posted by RFSchaller View Post
Last annual in March: 438 hours and no cracks. If I find any in the future I'll crank up my under utilized TIG welder and do a weld repair.
You need to get a starduster or pitts project going with that welder!
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Old 05-31-2016, 01:33 PM
alexe alexe is offline
Join Date: May 2013
Location: Temecula, CA
Posts: 240

No cracks at 1 year and approx 100 hours.
Alex Erdelyi
RV-12 #120758, N912AE
Flying as of 4/28/15
Paid through December, 2018
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Old 02-28-2017, 06:28 PM
Keldog Keldog is offline
Join Date: Nov 2016
Location: Grass Valley, CA
Posts: 18
Default Nose fork collapse


Was your fork replaced at "no charge?" Mine collapsed 200' after landing roll-out this past weekend. My -12 also has the old style fork.
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