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larkrv10(at)yahoo.ca
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 Posted: Sun Dec 26, 2010 8:14 am Post subject: main spar |
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Hi, happy holidays to all.
I am just starting on the main spar (sec 13 steps 7& and getting ready to match drill the "J" stiffeners to the spar flange. The plans say to "nest" the short stiffener on top of the long. Seems to me they overlap but far from perfectly. I'm sure I'm reading this correctly, do others agree?
Also in sec 13, there is very little mention of the right spar assembly. I had intended to do both at the same time. Anyone see a problem with this?
Thx.
Rick
#40956
Southampton, Ont
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larkrv10(at)yahoo.ca
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| Posted: Sun Dec 26, 2010 8:24 am Post subject: main spar |
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Another question guys.
How did you treat the holes, countersinks etc in the main spar where the anodizing was removed? Seems like a lot of work to spot prime before rivetting but if it's necessary then I'll do it (I'm using a "Dupont" epoxy based primer). I could also alodine them which would likely be even more time consuming. All opinions welcome (although I don't want to start a primer war).
Thx and regards.
Rick
[quote][b]
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thane
Joined: 27 Nov 2006
Posts: 56
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| Posted: Sun Dec 26, 2010 8:45 am Post subject: main spar |
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I just took a q-tip and dipped it in the primer and went along and coated each countersink one by one. Didn't take very long. I think I even did 2 coats.
Thane
165 hrs
321BY
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Working on finish kit: I hate fiberglass!! |
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rleffler
Joined: 05 Nov 2006
Posts: 680
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| Posted: Sun Dec 26, 2010 8:51 am Post subject: main spar |
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The j stiffeners should fit well together. If not, one may slightly bent. What’s important is that the flat side mates well to the wing skin, which is a few steps ahead in the manual. I wouldn’t get overly concerned if the “j” part doesn’t perfectly match.
You are discovering the Van’s style of plans. In the tail kit, they were very verbose about everything. As you proceed with the remaining kits, they assume that you have a solid understanding of left and right components and standard assembly techniques. They won’t mention these in the plans like they did in the tail kit.
I built both wings at the same time. As long as you have the space, there isn’t an issue.
I used an alodine 1123 pen to touch up the spar where there were countersinks.
bob
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Rick Lark
Sent: Sunday, December 26, 2010 11:12 AM
To: RV10-list
Subject: main spar
Hi, happy holidays to all.
I am just starting on the main spar (sec 13 steps 7& and getting ready to match drill the "J" stiffeners to the spar flange. The plans say to "nest" the short stiffener on top of the long. Seems to me they overlap but far from perfectly. I'm sure I'm reading this correctly, do others agree?
Also in sec 13, there is very little mention of the right spar assembly. I had intended to do both at the same time. Anyone see a problem with this?
Thx.
Rick
#40956
Southampton, Ont
01234567890123456
[quote][b]
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Bob Leffler
N410BL - Phase I
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Lew Gallagher
Joined: 04 Jan 2008
Posts: 402
Location: Greenville , SC
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| Posted: Sun Dec 26, 2010 9:30 am Post subject: Re: main spar |
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Hey Bob,
The 1123 pen sounded great, but quick search shows it to be pricey:
http://www.skygeek.com/henkel-alodine-1132.html
Have you found a better source?
Thanks, - Lew
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non-pilot
crazy about building
NOW OFICIALLY BUILDER #40549
Fly off completed ! |
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rleffler
Joined: 05 Nov 2006
Posts: 680
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| Posted: Sun Dec 26, 2010 10:17 am Post subject: main spar |
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I got mine from Stein several years ago. I haven't kept up on where the
best pricing is today.
Sorry,
bob
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Bob Leffler
N410BL - Phase I
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Ron B.
Joined: 17 Feb 2009
Posts: 103
Location: Nova Scotia
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| Posted: Sun Dec 26, 2010 1:26 pm Post subject: Re: main spar |
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Rick
This is exactly the biggest mistake I made during the entire construction of our RV-10. The term nest was so incorrect it gave me a total illusion of what Van's was trying to accomplish. I envisioned on stiffener nesting into the other. I hadn't looked forward far enough to see what the task of the stiffeners were drilled them wrong. Probably the only parts I had to re-order. In case you haven't figured out yet, the position where you drill the j stiffeners is not the final assembly location. You drill them there for hole location only. Once drilled, look at page 16-1 and you will see where they go.
I still cringe when I see the word nest anywhere. A much more appropriate term as you stated would be overlap. To me "nest" means directly on top, overlap means one end on top of the other pieces end.
Two years later I'm still mad.Maybe in another two years I'll get over it.
Happy Holidays Ron
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