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jconnell(at)fmwildblue.co Guest
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Posted: Fri Aug 13, 2010 12:12 pm Post subject: Wings, final installation, difficult NAS bolts |
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Guys,
I'm in the final assembly of an RV-9A. Any ideas how to get the nuts on the lower outside NAS bolts?
Did anyone remove the lower brake line fitting in the area for better access? I've got a few threads of the NAS bolt exposed beyond the landing gear weldment to gain a little more clearance for the nut.
It also looks like I will have to jam a screw driver under the nut to keep it from turning when I tightening it - there is no room for a wrench.
Anyone have an access hole on the side of the fuselage - I know this is extreme.
Any ideas appreciated...
Joe Connell
RV-9A N95JJ
[quote][b]
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eddyfernan(at)aol.com Guest
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Posted: Fri Aug 13, 2010 12:40 pm Post subject: Wings, final installation, difficult NAS bolts |
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I had to bend up and grind an open end wrench (buy a cheap one from Harbor Freight) to get to that tight spot.
Eddy Fernandez
RV 9A
575 hours T.T.
On Aug 13, 2010, at 4:10 PM, "Joe & Jan Connell" <jconnell(at)fmwildblue.com (jconnell(at)fmwildblue.com)> wrote:
[quote] Guys,
I'm in the final assembly of an RV-9A. Any ideas how to get the nuts on the lower outside NAS bolts?
Did anyone remove the lower brake line fitting in the area for better access? I've got a few threads of the NAS bolt exposed beyond the landing gear weldment to gain a little more clearance for the nut.
It also looks like I will have to jam a screw driver under the nut to keep it from turning when I tightening it - there is no room for a wrench.
Anyone have an access hole on the side of the fuselage - I know this is extreme.
Any ideas appreciated...
Joe Connell
RV-9A N95JJ
[b]
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Bob Collins
Joined: 11 Mar 2006 Posts: 470 Location: St. Paul, Minnesota
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Posted: Sun Aug 15, 2010 2:53 pm Post subject: Wings, final installation, difficult NAS bolts |
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You have to put the nuts in place before the bolts come through. I use a pair of needle nose vise grips to hold the nut, then as I turned the bolt, the vise grips would jame against the weldment. I torqued the bolt rather than the nut on the bottom row.
From: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of Eddy
Sent: Friday, August 13, 2010 3:39 PM
To: rv-list(at)matronics.com
Subject: Re: Wings, final installation, difficult NAS bolts
I had to bend up and grind an open end wrench (buy a cheap one from Harbor Freight) to get to that tight spot.
Eddy Fernandez
RV 9A
575 hours T.T.
On Aug 13, 2010, at 4:10 PM, "Joe & Jan Connell" <jconnell(at)fmwildblue.com (jconnell(at)fmwildblue.com)> wrote:
[quote] Guys,
I'm in the final assembly of an RV-9A. Any ideas how to get the nuts on the lower outside NAS bolts?
Did anyone remove the lower brake line fitting in the area for better access? I've got a few threads of the NAS bolt exposed beyond the landing gear weldment to gain a little more clearance for the nut.
It also looks like I will have to jam a screw driver under the nut to keep it from turning when I tightening it - there is no room for a wrench.
Anyone have an access hole on the side of the fuselage - I know this is extreme.
Any ideas appreciated...
Joe Connell
RV-9A N95JJ
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[b]
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_________________ Bob Collins
St. Paul, Minn.
Letters from Flyover Country
http://rvnewsletter.blogspot.com/ |
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av8er2fly(at)peoplepc.com Guest
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Posted: Tue Aug 17, 2010 5:59 pm Post subject: Wings, final installation, difficult NAS bolts |
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Hope you greased them that will help too.
[quote] ---
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Bob Collins
Joined: 11 Mar 2006 Posts: 470 Location: St. Paul, Minnesota
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Posted: Tue Aug 17, 2010 6:22 pm Post subject: Wings, final installation, difficult NAS bolts |
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I did. Being careful not to get any on the threads.
do not archive
On 8/17/2010 9:44 PM, av8er2fly(at)peoplepc.com (av8er2fly(at)peoplepc.com) wrote: [quote] Hope you greased them that will help too.
Quote: | ----- Original Message -----
From: Bob Collins (bcollinsrv7a(at)comcast.net)
To: Joe & Jan Connell (jconnell(at)fmwildblue.com)
Sent: Tuesday, August 17, 2010 6:31 AM
Subject: Re: Wings, final installation, difficult NAS bolts
I don't know if I would make any adjustments to the holes at all. The close tolerance bolts are supposed to be very tight. I don't believe Van's would endorse a reamer on the holes at all. I used the rivet gun set on very low psi to encourage them in. I also put the bolts in the freezer overnight although I'm not convinced that really does anything. Another person wiggling the wings doesn't hurt either.
On 8/17/2010 7:41 AM, Joe & Jan Connell wrote: Quote: | Thanks for the info Bob. I've also gotten several direct responses on the issue. I'll send pictures when I get the last bolts installed. I've had to use a mallet to drive the bolts. Knowing this I would have used a reamer on the center section spar carry-thru before I built up the fuselage.
I've also learned the two nut plates on the wing spar stubs are worthless. The is so much resistance on the AN4 bolts that the nut plates threads are stripped by the time the bolts are secure. A better solution would have been to use nuts instead. These can be easily reached by leaving off the wing tanks when the wings are installed.
Thanks again for your ideas and experience...
Joe
Time: 03:53:37 PM PST US
From: "Bob Collins" <bcollinsrv7a(at)comcast.net (bcollinsrv7a(at)comcast.net)>
Subject: RE: Wings, final installation, difficult NAS bolts
You have to put the nuts in place before the bolts come through. I use a
pair of needle nose vise grips to hold the nut, then as I turned the bolt,
the vise grips would jam against the weldment. I torqued the bolt rather
than the nut on the bottom row.
_____
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href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
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| - The Matronics RV-List Email Forum - | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
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_________________ Bob Collins
St. Paul, Minn.
Letters from Flyover Country
http://rvnewsletter.blogspot.com/ |
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