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  #31  
Old 02-25-2018, 12:28 AM
Tacco Tacco is offline
 
Join Date: Jan 2017
Location: White Salmon, WA
Posts: 173
Red face

A search of the forum seems to indicate the flanges are oriented outward for ease of riveting (driven rivets) and its not a structural issue. I paid close attention to rib configuration and flange direction on the wing because it mattered given other design differences of some ribs. Guess I missed it here. But hey, the holes lined up perfectly! Read the plans, read the plans ....read....
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  #32  
Old 02-25-2018, 06:33 AM
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joedallas joedallas is offline
 
Join Date: May 2010
Location: Spring Hill Fl
Posts: 734
Default

Steve

The only reason I could come up with is that it would allow better access of your hand to install the Stabilator.

I installed them with the hard side out to better support the skin cantilever .

I now also think this will help support the outward hinge bracket ? ( THINK )

I am building EAB and I made a lot of changes that may or may not be better.

I received my SB kits and I will modified them as not to add the doubler on the skins.

The shear load on the outward hinge half can be handled by the wing skin.

This is not a recommendation to change Vans design.

I would think that vans will change this design for the new kits at some time in the future ?

The RV 12 will evolve.



Joe Dallas



Quote:
Originally Posted by Tacco View Post
A search of the forum seems to indicate the flanges are oriented outward for ease of riveting (driven rivets) and its not a structural issue. I paid close attention to rib configuration and flange direction on the wing because it mattered given other design differences of some ribs. Guess I missed it here. But hey, the holes lined up perfectly! Read the plans, read the plans ....read....
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  #33  
Old 02-25-2018, 08:42 PM
ben barron ben barron is offline
 
Join Date: Sep 2013
Location: Fall City, WA
Posts: 138
Default Trimming the tailcone faring

I just finished my 18-02-02 install and had to trim the tailcone faring to get the full range of motion.

It also took us more than 8 hours to do the work. I guess we are slow.
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  #34  
Old 02-25-2018, 09:17 PM
Jim T Jim T is offline
 
Join Date: Jan 2005
Location: Independence, OR
Posts: 228
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Quote:
Originally Posted by ben barron View Post
I just finished my 18-02-02 install and had to trim the tailcone faring to get the full range of motion.

It also took us more than 8 hours to do the work. I guess we are slow.
You did fine Ben. I just finished the SB in 8 hours myself and mine wasn't even on the plane (new construction). Thanks for the "heads-up" about the Tailcone Fairing. I'll watch for that come install time.

Jim
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  #35  
Old 02-26-2018, 09:31 AM
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rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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Additional comments based on recent posts.....

HS-01231C should not be modified. To do so risks gaining the proper stiffness intended by the SB. One of numerous structural benefits of the part as designed, is that it makes a box structure by tying between the two hinge brackets.

Having all four 3/32 rivet holes riveted in each bracket is important. Do not leave the two holes used to attach the nutplate to the outboard bracket, open on the inboard bracket.

The reason the nutplate is installed with 426 rivets is because that rivet size is already in the kit for use on the HS-01232. Using them on the nutplate also, allowed for only two rivets to be in the SB kit, and since one is a 426 and one is a 470, they are easily identified. Very helpful when all parts are going into one bag.
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  #36  
Old 02-26-2018, 11:32 AM
Tacco Tacco is offline
 
Join Date: Jan 2017
Location: White Salmon, WA
Posts: 173
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Van's says "no big deal" with respect to the front rib orientation. Although I'm sure doing it per plans is preferred. BTW, I suspect the aft ribs are oriented the way they are because, if I recall correctly, there is a separate flange, riveted to the spar box, that they are riveted to. I'm not sure if you reversed them by mistake, that the holes would even line up.
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  #37  
Old 02-26-2018, 11:41 AM
redbaron redbaron is offline
 
Join Date: Aug 2013
Location: Lucerne,Ca
Posts: 272
Thumbs up barrel locking clips

Clips included in parts kit per vans
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  #38  
Old 02-26-2018, 12:20 PM
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joedallas joedallas is offline
 
Join Date: May 2010
Location: Spring Hill Fl
Posts: 734
Default Still in the dark

Steve

The six HS-1204 Ribs are symmetrical and they fit either way, I spent a lot of time to try to see why Vans reversed these ribs.

The center line of the rivets is the same each way.

The only difference is the hard side location.

I could not come up with any good reason so I installed them with the hard side out to help with the cantilever of the skins.

The only thing I could think of is for a little more room for your hands to install the stabilator.

If there is a good reason I would like to know it ?

Joe Dallas





Quote:
Originally Posted by Tacco View Post
Van's says "no big deal" with respect to the front rib orientation. Although I'm sure doing it per plans is preferred. BTW, I suspect the aft ribs are oriented the way they are because, if I recall correctly, there is a separate flange, riveted to the spar box, that they are riveted to. I'm not sure if you reversed them by mistake, that the holes would even line up.
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www.joesrv12.com
www.EAA1298.com

Last edited by joedallas : 02-26-2018 at 12:27 PM.
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  #39  
Old 02-26-2018, 01:47 PM
Tacco Tacco is offline
 
Join Date: Jan 2017
Location: White Salmon, WA
Posts: 173
Default

You?d probably have to run the designers stress analysis software to find out if there is any difference stress wise. My guess is that it makes no appreciable difference. I think access to the hinge fasteners is the likely reason. Having struggled a bit the get those nuts on, seems reasonable to me.
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  #40  
Old 02-26-2018, 05:49 PM
Hal-san Hal-san is offline
 
Join Date: Nov 2007
Location: Benton City, WA
Posts: 201
Default clips

Quote:
Originally Posted by redbaron View Post
Clips included in parts kit per vans
Received my kit today. There are no barrel clips in my kit.
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