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PatrickW
Joined: 27 Oct 2006
Posts: 380
Location: Fort Worth, Texas
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 Posted: Fri Apr 18, 2008 1:18 pm Post subject: 601XL - Wing Attach Uprights - 2 Questions |
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What has worked well for others when match-drilling the holes in the Center Spar through the Wing Attach Uprights? I want to avoid enlarging the center spar bolt holes, while still drilling the holes in the Wing Attach Uprights as accurately as I can.
Has anyone added gussets at the top end of the Wing Attach Uprights similar to the gussets on the main landing gear uprights? It seems to me that gussets here would be a lot more solid than simply riveting the Wing Attach Uprights to the .025 fuselage skin.
Thanks,
Patrick
XL/Corvair
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Tim Juhl
Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan
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| Posted: Fri Apr 18, 2008 1:29 pm Post subject: Re: 601XL - Wing Attach Uprights - 2 Questions |
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The photo guide shows two ways of marking the holes without enlarging those in the center spar attachment.
Paul Mulwitz used gussets in that area... perhaps he will chime it and share some photos.
Tim
Do not archive
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Champ L16A flying
Zodiac XL - Jabiru 3300A
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craig(at)craigandjean.com
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| Posted: Fri Apr 18, 2008 1:51 pm Post subject: 601XL - Wing Attach Uprights - 2 Questions |
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But it is in the photo guide for 6-B-14, not 6-B-13 where you would expect
it. Basically use a 5/16th transfer punch or drill guide bushing through the
spar to one upright at a time.
-- Craig
--
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Aerolitellc(at)aol.com
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| Posted: Fri Apr 18, 2008 1:55 pm Post subject: 601XL - Wing Attach Uprights - 2 Questions |
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Patrick
I took a bolt of the same size and ground a point on it to act as a punch and with the spar alignment tool in about a quarter of an inch for the first holes it worked better than any thing I have seen tried yet. After you make your marks then just take it to the drill press and drill them to size.
As far as the gussets go I make sure they touch the upper longerons and don't worry much about them touching the bottom because they each get 2 bolts thru them.
Jeff
Picking up another kit Monday
Need a new ride? Check out the largest site for U.S. used car listings at AOL Autos.
[quote][b]
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psm(at)att.net
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| Posted: Sat Apr 19, 2008 2:49 pm Post subject: 601XL - Wing Attach Uprights - 2 Questions |
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Hi Patrick,
Indeed, I felt the same way you do. I built and installed gussets on the wing attach uprights in a fashion similar to the gear uprights. I used the same material, .040 6061T6, and similar design to the ones used for the gear uprights. I also asked ZAC about this change and got approval from Nick for it. He said it wouldn't cause problems, but he didn't say anything about it helping anything.
Here is a picture of my gussets along with the landing gear gussets.
[img]cid:7.1.0.9.0.20080419154140.065bb090(at)att.net.0[/img]
Good luck,
Paul
XL fuselage
At 02:48 PM 4/18/2008, you wrote:
| Quote: | Paul Mulwitz used gussets in that area... perhaps he will chime it and share
some photos.
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