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06-17-2014, 12:11 PM
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Join Date: Oct 2007
Location: Boston Area
Posts: 283
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Hardware / Nuts and Bolts
On the RV-14, and I assume on many other models the wing spar ends up being shipped with many of the bolts pre-attached that hold the ribs. In the process of removing the bolts, then putting them back, and torquing them I notice that the heads no longer look pristine. They certainly are not stripped, however I have seen a couple builder logs where those same bolts and nuts look brand new.
So the question is: What tools do people use (or technique) to tighten to lessen the wear? I use a craftsman mechanic set (socket). I am turning the nut typically, however even holding the bolt in place with a 3/8 (AN3) socket on the other side the back and forth wears a little.
When do you consider replacing the bolts instead of using them again? I am aware if the shank/grip of the bolt is scored that would call for a replacement, but what about the head?
Thanks.
__________________
Jeff
RV-14A
Status: Wings complete(ish), Working on: Empennage. Fuselage kit on order
Location:MA
http://vans14a.blogspot.com/
Last edited by JDBoston : 06-17-2014 at 12:14 PM.
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06-17-2014, 02:32 PM
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Join Date: Jan 2007
Location: Battleground
Posts: 4,348
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I wouldn't worry about it. Your probably just wearing a bit of the cad plating off. Not the end of the world.
If it bothers you enough, upgrade your socket and wrench sets. Craftsman tools are pretty rough and bulky. You could protect the head and nuts with blue painters tape, but that is a lot of fussing.
I like S&K. Cheaper than Snap On but are very similar in quality for the basic stuff like socket and wrench sets.
__________________
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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06-17-2014, 03:46 PM
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Join Date: Dec 2009
Location: Boulder, CO
Posts: 4,428
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Proto also makes excellent tools. Granger sells them.
Dave
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06-17-2014, 07:02 PM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,027
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It isn't caused by what tools are used. It is caused by the all steel MS self locking nuts used.
__________________
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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06-18-2014, 08:17 AM
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Join Date: Jan 2008
Location: Ozark, AL
Posts: 65
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Try using 6 point sockets they have more contact area than 12 points which should result in less wear.
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Adam
RV-8 Builder #83611
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06-18-2014, 09:23 AM
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Join Date: Jan 2007
Location: Battleground
Posts: 4,348
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Quote:
Originally Posted by rvbuilder2002
It isn't caused by what tools are used. It is caused by the all steel MS self locking nuts used.
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Scotty - on the bolt head? That is where he is seeing the wear spots...
__________________
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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06-18-2014, 09:30 AM
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Join Date: Oct 2007
Location: Boston Area
Posts: 283
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Quote:
Originally Posted by JonJay
Scotty - on the bolt head? That is where he is seeing the wear spots...
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Wear is on both sides, but point is well taken.
Some of this may be my technique as well. Thanks for the advice.
__________________
Jeff
RV-14A
Status: Wings complete(ish), Working on: Empennage. Fuselage kit on order
Location:MA
http://vans14a.blogspot.com/
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06-18-2014, 09:58 AM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,027
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Quote:
Originally Posted by JonJay
Scotty - on the bolt head? That is where he is seeing the wear spots...
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Sorry. I read the following....
Quote:
Originally Posted by JDBoston
I notice that the heads no longer look pristine. They certainly are not stripped, however I have seen a couple builder logs where those same bolts and nuts look brand new.
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And my brain interpreted it as "I noticed that the threads (not heads) no longer look pristine" because of the "They certainly are not stripped" comment.
The steel MS nuts do remove the cad plating from the threads.
Sorry for the confusion...
__________________
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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06-18-2014, 10:06 AM
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Join Date: Sep 2008
Location: California
Posts: 697
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I was disappointed to see my newly cad plated cylinder hold down nuts all boogered up from the cylinder wrenches.....oh well.....  |
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