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  #11  
Old 10-02-2008, 08:03 AM
Webb's Avatar
Webb Webb is offline
 
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Default

Quote:
Originally Posted by pierre smith View Post
You mentioned an air ratchet....

....Don't turn the bolts if you can get to the nut. Aircraft practice is to turn the nut because rotating a bolt can scratch it and cause stress risers down the road.

Regards,
Point well taken. Best I can gather, if you look at DWG11, it shows washers on the lower bolt head side and that is so you can turn the bolt head and not the nut so you won't gall the spar under the bolt head.

Your thoughts?
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Webb Willmott
Jackson, MS
N32WW
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  #12  
Old 10-02-2008, 08:52 AM
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pierre smith pierre smith is offline
 
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Default I don't think.....

....that the washers are there for that reason, Webb. You don't want a bunch of extra threads sticking out the other side. The bolts can get galled by rotating inside the attach fittings, is what I meant. I looked at drawing 11 and also the -7A that's being built here. Looks like it might take a ground down socket to get on the nuts of the 8 larger bolts. By all means rotate the bolts if you positively cannot turn the nuts.

Regards,
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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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  #13  
Old 10-02-2008, 09:03 AM
dlomheim dlomheim is offline
 
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Location: (2OK2) OK City, OK
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Default Dry Ice Technique

I might have missed it but I didn't see Dry Ice being mentioned anywhere in the posts. We used this technique on my dad's RV-7A when installing the wings for the final time at the airport. Put them in the freezer the night before and then took them to the airport on ice in a cooler. At the airport put at least 90% pure alcohol into a coffee can and added dry ice. The temp. drops to -109.3 degrees F and dropped the bolts in one at a time for a few minutes and installed...slid in with little fuss at all...no cussing required.

Doug Lomheim
90116
OK City, OK
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  #14  
Old 10-02-2008, 12:03 PM
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Default On the same page

Quote:
Originally Posted by pierre smith View Post
....that the washers are there for that reason, Webb. You don't want a bunch of extra threads sticking out the other side. The bolts can get galled by rotating inside the attach fittings, is what I meant. I looked at drawing 11 and also the -7A that's being built here. Looks like it might take a ground down socket to get on the nuts of the 8 larger bolts. By all means rotate the bolts if you positively cannot turn the nuts.

Regards,
Pierre - We're on the same page. I'm just gearing up for the big day!!!
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  #15  
Old 10-02-2008, 12:14 PM
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pierre smith pierre smith is offline
 
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Default Boelube.....

....is great stuff, Webb. After it dries, it remains kinda waxy and even assists in getting screws in and out of nutplates. We used it on our spar bolts as well........yeah, a great day when the wings go on!

Regards,
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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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  #16  
Old 10-02-2008, 02:23 PM
Finley Atherton Finley Atherton is offline
 
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Default

The lower nuts are a whole lot easier to install if you use MS21042 nuts (available from ACS) instead of the Vans supplied ones.

Fin
9A
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  #17  
Old 10-02-2008, 03:35 PM
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Default Got some

Quote:
Originally Posted by pierre smith View Post
....is great stuff, Webb. After it dries, it remains kinda waxy and even assists in getting screws in and out of nutplates. We used it on our spar bolts as well........yeah, a great day when the wings go on!

Regards,
Got Beolube, got light machine oil, got fuel lube, got WD40, got motor oil, got grease, got lithium grease......only thing I haven't got is which one!!!!

Serioiusly, after what I've read, I'm not sure it makes a difference as long as you keep it off the threads.

Interesting about the MS21042 stop nuts.
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  #18  
Old 10-03-2008, 02:45 PM
Finley Atherton Finley Atherton is offline
 
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Regarding my post #16 about MS21042 nuts. If you use these nuts on the lower bolts then think a bit first before doing them up with a ring spanner (wrench). I can recall that on one of the nuts I used a ring spanner to hold the nut while turning the bolt and was unable to remove the spanner once the bolt had protruded through the nut due to interference with the main gear weldment. I ended up having to undo it and then using an open ender instead.

Fin
9A
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  #19  
Old 10-03-2008, 03:55 PM
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Default Whoops

Quote:
Originally Posted by Finley Atherton View Post
Regarding my post #16 about MS21042 nuts. If you use these nuts on the lower bolts then think a bit first before doing them up with a ring spanner (wrench). I can recall that on one of the nuts I used a ring spanner to hold the nut while turning the bolt and was unable to remove the spanner once the bolt had protruded through the nut due to interference with the main gear weldment. I ended up having to undo it and then using an open ender instead.

Fin
9A
Ouch - thanks for the heads up. If not the best tip - best word of warnnig.
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  #20  
Old 10-29-2008, 10:52 AM
Triumph1974 Triumph1974 is offline
 
Join Date: Feb 2008
Location: Richmond VA
Posts: 93
Question Bottom Wing Bolts

Has anyone ever tried to put the bottom wing bolt nut that is in the corner just behind the row of 5 bolts that are along the landing gear mount, with those 5 AN3 bolts removed? I was looking at the this the other night and thought that it could perhaps make getting that one bottom nut tighten a little easier. Of course putting those 5 bolts back in with the wing on may not be a piece of cake either.....

Just curious.

Paul
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