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  #1  
Old 04-09-2021, 10:16 AM
dmat dmat is offline
 
Join Date: Oct 2010
Location: Union County, NJ
Posts: 1,086
Default Tip-up Stiffener Retrofit?

Hi gents,

I just acquired a RV6 tip-up but the canopy doesnt have stiffeners and it flops around more than I would like.

1) does anyone make a retrofit kit?
2) I know vans sells the stiffener but I would rather not have to drill and rivet as the paint is in good shape. Can I use structural grade adhesive to bond vans stiffeners to the canopy frame? Something like Hernon FusionBond.

Thanks,
D
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Last edited by dmat : 04-09-2021 at 10:22 AM.
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  #2  
Old 04-09-2021, 10:58 AM
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rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
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Default

Before the metal stiffeners were developed, the tip-up canopy install instructions described/detailed stiffening the frame with the use of some bonded / shaped foam installed at the fwd most bow of the frame.

If you are willing to repaint on the inside, something like this could probably be done as a retrofit.
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  #3  
Old 04-09-2021, 11:00 AM
lr172 lr172 is offline
 
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I chose the RV-7 stiffner kit. The RV-6 plans include a process and pics of using fiberglass to create a reinforcement. This, or similar approach, would seem the best route for a painted airplane
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  #4  
Old 04-09-2021, 11:02 AM
dmat dmat is offline
 
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Location: Union County, NJ
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Default

Thanks guys! , guess I will be ordering a 7 stiffener kit.

Dan
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  #5  
Old 04-09-2021, 11:34 AM
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rvbuilder2002 rvbuilder2002 is offline
 
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Quote:
Originally Posted by dmat View Post
Thanks guys! , guess I will be ordering a 7 stiffener kit.

Dan
If you substituted NAS1097 rivets at the locations that would effect the outside finished paint, the manufactured heads are small and it would allow for very small machine countersinks in the skin.

I have a few of these on my own airplane where I added a ADHRS bracket in the tail cone after my airplane had been finish painted, and even with the rivet heads unpainted, they are hardly visible from 10 feet away.
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Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.

Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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  #6  
Old 04-23-2021, 07:23 AM
dmat dmat is offline
 
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Are the NAS1097 the shear-head pop rivets or solid?

Thanks,
D
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- RV6: Restoration/moderization underway. Looking for G3x Parts....

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  #7  
Old 04-23-2021, 11:54 AM
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rvbuilder2002 rvbuilder2002 is offline
 
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Quote:
Originally Posted by dmat View Post
Are the NAS1097 the shear-head pop rivets or solid?

Thanks,
D
They are solid rivets.
In simple terms they are the same as an AN426, but with a smaller head which allows for machine countersinking skins as thin as .025" thick.
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Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.

Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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  #8  
Old 04-23-2021, 01:04 PM
dmat dmat is offline
 
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Thanks! I need to call and place an order so I will ask for those as well. I assume I only need a hand full.
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- RV6: Restoration/moderization underway. Looking for G3x Parts....

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  #9  
Old 05-04-2021, 06:46 AM
circuitbreaker8747 circuitbreaker8747 is offline
 
Join Date: Feb 2019
Location: Atlanta Georgia
Posts: 41
Default stiffners

Just purchased a RV6 last year. Curious what this stiffener looks like? Curious if we have one or not. Can somebody post a picture please. Thank you.
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  #10  
Old 05-04-2021, 07:03 AM
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bjdecker bjdecker is offline
 
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Default Stiffeners...

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Brian Decker
Retired Firmware Guy and Airplane Builder

2020 RV-14 QB -- Under construction - Tailcone & Empennage Complete.
2018 RV-7 QB -- Built, Flying
2007 RV-7 QB -- Built, Drowned, Resurrected and flying
1998 RV-8 QB -- Started, Sold
1986 Mooney 205SE
1980 Mooney 231

Aided and abetted building a number of other RV's.
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