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Old 07-06-2022, 08:11 AM
DadBod Builder DadBod Builder is offline
Join Date: Apr 2019
Location: Geneva, Il
Posts: 21
Default Temporary Wing Bolts?

I don't want to use the supplied wing bolts to temporarily bolt the fuselage forward and aft sections together per section 28 and bolts from ACS are very very expensive. What route have some of you taken and size did you use? I also don't want to just get steel because I think it could cause corrosion. Don't hold back and I will take any advice and input. I'm not too proud to ask for help. You guys always have better ideas than just me.
Thanks for the help.
I live in the Chicago area so I can get just about anything here.
Dave A.
First Time Builder
Slow build RV-10
Navy Vet.
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Old 07-06-2022, 08:21 AM
rockwoodrv9 rockwoodrv9 is offline
Join Date: Dec 2011
Location: Meridian ID, Aspen CO, Okemos MI
Posts: 3,099

I used hardware store bolts and grinded them to a blunt point to make them easier to get in and out. If you lube them it will make it easier to remove. I didnt concern myself with the corrosion issue. Maybe that was incorrect but I did not see any issues.
Williamston MI
O-320 D2A
Flying N376E
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Old 07-06-2022, 08:46 AM
Mike S's Avatar
Mike S Mike S is online now
Senior Curmudgeon
Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 16,451

Similar to Rocky, but got bolts long enough that I could cut off the threaded area, just leave a straight shank. Rounded off the end to make a bit easier to insert.

I was concerned the threaded part could damage the hole inner surface if things were misaligned at all.
Mike Starkey
VAF 909

Rv-10, N210LM.

Flying as of 12/4/2010

Phase 1 done, 2/4/2011

Sold after 240+ wonderful hours of flight.

"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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Old 07-06-2022, 08:47 AM
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Auburntsts Auburntsts is offline
Join Date: Jan 2005
Location: Tampa, FL
Posts: 3,149

So I also used hardware store bolts, 3/8" dia, 4 total with 2 in each wing (one top and one bottom per my plans). I turned the bolts into pins by grinding off the threads and lightly coating them with oil. Worked just fine.
Todd "I drink and know things" Stovall
RV-10 N728TT - Flying!
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Old 07-06-2022, 03:00 PM
DRMA DRMA is offline
Join Date: Jan 2016
Location: Sugar Land, TX
Posts: 540

See Step 1 on drawing page 44-3 (Fuselage drawing set). It calls out 3/8" bolts ground down to act as drift pins.:

" Step 1: Slide the wing spar (left shown) into the fuselage and temporarily pin as shown in Figure

When bringing the spar into it's exact position, lining up the bolt holes in the bulkhead and spar,
it is often helpful to use drift pins. This could be a disposable hardware store bolt with the end
rounded or tapered on a grinder. GENTLY driving this lubricated pin into a nearly aligned hole
will center the bulkhead/spar hole so that the bolts can be installed without excessive force.

It is recommended that 3/8 dia. hardware store bolts be used for test fitting to prevent damage to
the holes and NAS bolts. For fitting, it is only necessary to install four 3/8 bolts(pins), one
top and one bottom per wing."

Dave Macdonald

RV-10 First Flight April 1, 2020. Phase 1 Complete
2022 VAF Dues Paid (plus a little more as the site is worth it.)
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Old 07-06-2022, 03:19 PM
togaflyer togaflyer is offline
Join Date: Apr 2013
Location: Fl/Ga
Posts: 856

Remember that the wing bolts have a tight tolerance so if you can toss them in a refrig or freezer for about an hour before then add some grease before installing it will make inserting them easier to install.
Rich Gurr
RV 10 924RL
9A0 & FD51
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Old 07-06-2022, 06:39 PM
N427EF N427EF is offline
Join Date: Oct 2005
Posts: 1,662
Default Don't do what I did

I too got hardware store bolts and not only but they were Grade 8 and anodized.
They "almost" looked like the close tolerance bolts needed for final assembly.
In a moment of over exuberance I accidentally grabbed the close tolerance bolts and proceeded to grind off the thread .
You can guess the rest of the story....
Ernst Freitag
RV-8 finished (sold)
RV-10 IO-540 8.5:1
Running on 91 Octane E10 mogas since 2011
We all get what some of us deserve
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Old 07-06-2022, 07:34 PM
Scott Hersha Scott Hersha is offline
Join Date: Jan 2005
Location: Cincinnati, OH
Posts: 2,286

My zinc plated hardware store bolts didnít corrode, and still havenít. And that has been 20+ years, and four RV builds. Of course I lubed them up before inserting them (ground down to a rounded end). You can have them if you want. Iíve built my last RV (almost done).
RV6/2001 built 2000/sold 2005
RV8 Fastback/2008 built/sold 2015
RV4/bought 2016/sold/2017
RV8/2018 built/Sold(sadly)
RV4/bought 2019/sold2021
RV6/Used kit purchased 2021 building
Cincinnati, OH/KHAO
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Old 07-07-2022, 10:21 AM
DadBod Builder DadBod Builder is offline
Join Date: Apr 2019
Location: Geneva, Il
Posts: 21

Thank you but I will save the money and buy some at the hardware store. Shipping would kill me. Haha
Thanks everyone for the information.
Dave A.
First Time Builder
Slow build RV-10
Navy Vet.
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Old 07-07-2022, 05:35 PM
RandyAB RandyAB is offline
Join Date: May 2016
Location: St Albert, Alberta, Canada
Posts: 535

The first time I put my wings on was also the final time. It took a bit of prep work and minor changes to the order if operations but it was very much worth it to me to do it that way.
Randy P.
1st time builder
RV10 - QB wings and fuse. Working on cabin top
St. Albert, Alberta, Canada
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