First Deviant Behavior

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JohnR
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First Deviant Behavior

Post by JohnR »

Well I spent most of Saturday working on my first deviant behavior on my kit. It is an idea I've seen several other builders use and it looked like a useful modification. I sent Van's an email asking about structual issues it might cause and got the standard answer of "we can't say either way as we haven't tested it" which is what I expected. So I went over it with an engineer friend of mine and his thought what I had laid out should okay and should be as strong if not stronger. Here are a few images and a brief description.

There is quite a bit of room under the baggage floor that is unused. I have seen several people talk about using this are for various things on their websites. Some of them have added doors and that is what I decided I would do. I wanted the door to be large enough for a quart of oil to go through easily and decided on 5" x 12" for the opening size.

For reinforcement around the opening I cut in the baggage floor I used .032 aluminum and cut it as large as I could and still get it to fit cleanly between the ribs. I left a 1/2" ledge of this .032 on three sides for the door to rest on with the hinge on the remaining side.

To cut the hole in the floor and the hole in the reinforcement piece I decided to make a couple of plywood templates and use a router which PK has already demonstrated as being very effective.

Here is an image of the templates. One has been cut and is laying on the other one which has the corners drilled.

Image

Here is the second one ready to final cut the sides after roughing it out with my jig saw.

Image

The jig was fastened to the baggage floor pan with double sided tape. I then used a flush cut router bit to make the cut.

Image

Image

After getting the opening cut I laid out the rivet lines and marked the hole locations. This gave me a great appreciation for those who built or are building the plales that are not matched drilled. Thank you Van!

Once I got the holes drilled I clecoed it all together and here is what I have.

Image

Now I just have to figure out how I want to do the hinges and make the lids out of .025.

Like I said this is my first deviant behavior and I can see it does add to the build time. I spent a little over 8 hours just on the above and still am not done. I figure I will have about 15 hours in it by the time I am done.

Disclaimer: I am not recommending anyone else try this, if you do you should look into the structural issues yourself.
JohnR
RV-7A - Fuselage - SOLD, just not supposed to be
Numbers 6:24 - The LORD bless thee, and keep thee

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jim_geo
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Post by jim_geo »

This is a great post thanks for the info. Gives me some ideas about doing something similar but I'll have to work with installed materials, cause I ain't removin my floors!

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Womack2005
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Post by Womack2005 »

John,

Looks like a cool idea. How deep will the compartment be? You might want to think about placarding it for max weight too.
Will
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LooseNut
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Post by LooseNut »

John,

Looks like a nice mod. 8) Using the router to make the cut looks like a good idea.

How are you planning to latch the doors? I don't think you want them flopping and banging in bumpy air!

Will the doors have stiffeners?

++Harold
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TomNativeNewYorker
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Post by TomNativeNewYorker »

Why not use 1/4 inch turnlock Dzus fasteners and attach a flange under the floor cutout for the Dzus receptacles.

Make a 'snap fit' access panel and use Dzus studs to attach the panel to the floor.

I would even consider attaching a bonding wire to the panel as a leash to keep the panel from getting away and becoming a FOD hazard.

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N200PF
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Post by N200PF »

VERY COOL JOHN!!! Looks like a SUPER idea!

For those of us that are not working on the fuse yet, could you post a picture that is pulled back a bit? (wider angle) ...then I'll have a better idea of where those are actually going to be on the floor.

I'm still such a rookie! :mrgreen:

- Peter
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North Oaks, MN -> Home Base (KMIC)

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JohnR
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Post by JohnR »

Will, the compartments are only a little over 3 inches deep but are about 6 1/2 inches wide and 22 inches long. I will probably placard them for something like 5 pounds each. I really just wanted a place to be able to store a quart of oil, maybe a small tool kit, a couple of towels, and anything else that is small, relatively light, and I don't need quick access to. After all it will be under any luggage that you are carrying.

I plan on using a hidden piano hinge on one side and have Hartwell latches for the fastner duties. I'm still trying to decide if I want to use the hidden hinge or just let the piano hinge show. Either way it will be attached permanently so there is no chance of it becoming FOD. :wink:

Peter, here is a photo of the center section. You can see the area from the previous photos on the right and the seating section on the left. You'll be there before you know it.

Image
JohnR
RV-7A - Fuselage - SOLD, just not supposed to be
Numbers 6:24 - The LORD bless thee, and keep thee

TomC
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Post by TomC »

John,

Looks like a nice mod. You might want to put in a front or back stop to keep the contents from sliding all the way to the front or back. The back position might be hard to reach over the seat backs. You don't want to have to remove the seats to get a quart of oil out. Be careful WHEN you have to crawl into the baggage area to buck the top rear deck rivets. I cut a temporary piece of plywood to cover the entire floor to distribute my weight.

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captain_john
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Post by captain_john »

Jim, you can do it without removing the floor pans.

Brad Oliver and I were toying around with closing one bay off for smoke oil ala fuel tank/proseal method! Hmmmm, interesting thought!

I ordered 2 extra camlocks from www.milspecproducts.com for this. Mine will be hinged on the rear and latched on the front with one camlock each.

I plan on putting oil in one and a tool/1st aid kit in the other. I will keep my fuel tester out to turn the camlocks.

Looks great, John!

:) CJ
RV-7
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Womack2005
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Post by Womack2005 »

Very cool picture John. And I think a very cool idea :mrgreen:
Will
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RVNewsletter
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Post by RVNewsletter »

these are the sorts of things that make me want to go back and do sections of my project over. Very nice. I'm going to put it in the Builder Tips section of this week's Hotline .

bob

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