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  #1  
Old 08-29-2017, 10:54 AM
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N999ZA N999ZA is offline
 
Join Date: Sep 2009
Location: Wichita, KS
Posts: 241
Default RV-7 Wing: What would you do differently next time?

After reading through the following thread...

http://www.vansairforce.com/communit...d.php?t=127998

... I did a quick search of the -7/-7A forums and couldn't find an existing thread.

So, If you'd build another RV-7 Wing, what would you do differently ? Any features you would add to improve the serviceability of your aircraft, and that would be easier to implement while you'd be building the wing?
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Engineering Flight Test Pilot/Engineer, CFI-A, CFII
RV-7 Kit (Halfway through wings)...SOLD!!! Then repurchased!!!!
2017 Dues Paid
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  #2  
Old 08-29-2017, 10:55 AM
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N999ZA N999ZA is offline
 
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Location: Wichita, KS
Posts: 241
Default RV-7 Fuselage: What would you do differently next time?

After reading through the following thread...

http://www.vansairforce.com/communit...d.php?t=127998

... I did a quick search of the -7/-7A forums and couldn't find an existing thread.

So, If you'd build another RV-7 Fuselage, what would you do differently ? Any features you would add to improve the serviceability of your aircraft, and that would be easier to implement while you'd be building the fuselage?
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Andrew Z.
Engineering Flight Test Pilot/Engineer, CFI-A, CFII
RV-7 Kit (Halfway through wings)...SOLD!!! Then repurchased!!!!
2017 Dues Paid
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  #3  
Old 08-29-2017, 11:17 PM
Naigool Naigool is offline
 
Join Date: Jan 2014
Location: Ollon Switzerland
Posts: 78
Default No QB

I would go for a SB and not QB!
I found out very difficult to achieve certain build task that wasn't achieved on the QB fuselage.
Exemple drilling for the rudder pedals when the fuselage is almost done; not easy to do it properly and so easy to do it at the beginning of the build ( SB).
Installing the tail wheel support WD-409 was also a pain in the *** and the work will always be not as well done as if you build a SB.
So because I like the things well done I would avoid the QB!
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  #4  
Old 08-30-2017, 07:42 AM
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Raymo Raymo is offline
 
Join Date: Nov 2014
Location: Richmond Hill, GA (KLHW)
Posts: 1,344
Default

I installed the Super Track while building and very glad I did. The one I wish I'd done is the Almost -14 mod to provide more room for taller passengers. I set mine up for my 5' 8" frame but anyone over 6 feet is cramped.
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  #5  
Old 08-30-2017, 08:18 AM
tgmillso tgmillso is offline
 
Join Date: Nov 2012
Location: Launceston, Tasmania, Australia
Posts: 477
Default

What I would do the same:
- Wet rivet (sikaflex pro) all skins on the lower half of the fuselage for corrosion protection.
- Titanium belly plate 14" wide and 2ft aft of firewall with 1/16" fiberfrax insulation.
- Mounting brackets for wing root gascolators on each side of the fuselage.
- Fiberfrax (I used morgan superwool as it is biosoluble) firewall insulation behind 2thou stainless foil. I used 1mm superwool, but next time I would use 2mm. I think the pillowing is too much with the 3mm (1/8").

What I would to differently next time:
- Perhaps get a QB so that I would not make so many customizations and not have to spent days wrenching on those longerons.
- I pre-fabricated many of the components according to the plans ahead of time. This was ok regarding edge finishing of sheets, but for many of the more intricate angle components (e.g. rudder stops) they had to be later modified regardless (or fabricated a second time) for a custom fit. Sure, prep and prime all your skins in one go, but for the smaller components build them as you need them and just hit them up with some quality zinc phosphate etch rattle can primer as you go.
- Wet rivet/fay seal the top skins on the fuselage. I did just the bottom skins for corrosion protection, however I should have in hindsight taken the time to do it to the top skins also.
- Baggage floor hatch and extra conduit running aft under the baggage floor. I thought I had plenty of room to run everything aft, but I don't. Way easier to install early.
- Give yourself plenty of room for fuel line bends. I used an andiar pump and didn't give myself enough room for the flaring tool to be placed on the pipe after I had completed the bends, so I had to spend a lot of time modifying things.
Cheers,
Tom.
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  #6  
Old 08-30-2017, 08:25 AM
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schristo@mac.com schristo@mac.com is offline
 
Join Date: Sep 2007
Location: WA
Posts: 934
Default pro seal the belly seams.

I would pro seal all of the belly seams.
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RV7 powered by a lycoming thunderbolt IO-390
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  #7  
Old 08-30-2017, 08:39 AM
tgmillso tgmillso is offline
 
Join Date: Nov 2012
Location: Launceston, Tasmania, Australia
Posts: 477
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I'd order the delux fuel caps before I started the tanks. I got halfway through the tanks and realized that the standard tank caps and flanges are sub par, then had to wait a couple of weeks for the delux units to arrive.
Tom.
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  #8  
Old 08-30-2017, 09:13 AM
dave4754 dave4754 is offline
 
Join Date: Oct 2009
Location: Edson, Alberta, Canada
Posts: 399
Default Pretty happy here

I bought the QB fuse and could not be happier it came in good shape.

Saved me hundred or more hours of build and as i am time constrained when building this helped me immensly.

Just my thoughts.
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  #9  
Old 08-30-2017, 09:24 AM
LittleDave LittleDave is offline
 
Join Date: Dec 2015
Location: Bolivar, MO
Posts: 10
Default

Control the bucking bar better......
Saves money on more skins.
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RV7 empennage complete on to the wings
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  #10  
Old 08-30-2017, 12:27 PM
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N999ZA N999ZA is offline
 
Join Date: Sep 2009
Location: Wichita, KS
Posts: 241
Default

Thanks for the notes, guys, all great for planning.


Moderators: Any reason why you combined my Wing and Fuselage threads?

I was hoping to keep them separate to let the building planning wing mods have a different place to go than the builders planning their fuselage mods.

Can we split them back out?
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Engineering Flight Test Pilot/Engineer, CFI-A, CFII
RV-7 Kit (Halfway through wings)...SOLD!!! Then repurchased!!!!
2017 Dues Paid
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