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  #1  
Old 04-30-2014, 07:46 AM
Bayou Bert's Avatar
Bayou Bert Bayou Bert is offline
 
Join Date: Sep 2012
Location: Prairieville, LA
Posts: 223
Default What Do I Use? FAB question

I have arrived at fitting the FAB to the engine.
The project I bought has the Alt Air door already installed
on the fiberglass air box. The FAB plans I have are dated 2007.
I am trying to find the Filter Retainers. After going to Vans and
putting in the part number on the plans, VS-131-D, come back
not found. So I went down the list and it's not there either but
I did find two numbers listed as filter retainer.
I am guessing it alum angle but no size is given, even on the order page.
Would someone remember what material is used to make the retainers?
Being is LA makes me have to wait half a day until Vans opens.

Greatly Appreciated
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  #2  
Old 04-30-2014, 08:44 AM
Jaknjoan Jaknjoan is offline
 
Join Date: Jan 2005
Posts: 246
Default Air filter retainers

You can just take one of your .025 or .032 - 90 degree angles and cut off one leg leaving approximately 1/4 to 3/8 inches of the leg attached. Now cut pieces 3/4 - 1 inch long and you have your retainers.
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  #3  
Old 04-30-2014, 11:07 AM
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bruceh bruceh is offline
 
Join Date: Mar 2008
Location: Ramona, CA
Posts: 2,514
Default

I didn't want the filter sitting on the fiberglass airbox and wearing it out, so I went to the scrap pile and found a piece of aluminum from the trim bundle and did this for the bottom.

Just bend up the tabs you put on the oval shape and that will hold the bottom of the filter solidly in place. Epoxy bonds the aluminum plate to the fiberglass bottom.

The top retaining clips for the filter look like this.
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  #4  
Old 04-30-2014, 11:58 AM
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Bayou Bert Bayou Bert is offline
 
Join Date: Sep 2012
Location: Prairieville, LA
Posts: 223
Default Thanks Bruce

I have the Alt Air door already installed in the center of the fiberglass
air box. I would have to come up with a ring or something.
Another thing has me stumped at the moment is the order of the
assembly of the nutplates and the filter keepers and the top plate.
The plans have only on drawing in profile and I just cant tell.
Any photo appreciated.
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  #5  
Old 04-30-2014, 04:44 PM
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bruceh bruceh is offline
 
Join Date: Mar 2008
Location: Ramona, CA
Posts: 2,514
Default

From the top down, top plate, clip, then nutplate. Here you can see the dimples for the flush rivets on the top plate.



I also had my alternate air hole cut out of the bottom plate. My alternate air mechanism was a bit more work than using Van's rotating plate. I fiberglassed in a sliding door mechanism.
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RV-9A N5771H flown over 900 hours!
http://www.overthehills.com/RV-9A-Project
APRS Tracking for KJ6YRP and Flying Over the Hills Blog
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EAA Tech Counselor, Pre Buys, Build assistance - canopy/tanks/fiberglass/electrical/repairs
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