TitleGarrison

“No bird ever flew nonstop from New York to Tokyo, or raced 15 miles high at triple the speed of sound.                                                                                                   
  But birds do something else.
  They do not conquer the air; they romance it..”

  Peter Garrison

HoursAndCounting

Jur's RV7 Aircraft Factory
2917 hours and counting
Some decisions in life are bare of any obvious logic

 

Baggage and seats area

06/12/2018 - Andair fuel tank selector - 2h

Details
Parent Category: Fuselage
Category: 10. Baggage and seats area
Hits: 831

Some small tasks in the forward cabin. The F-983C fuel valve cover is the place where the Andair fuel valve sits on the F-983A fuel valve plate.

The fuel lines coming from the left and right wing join here into the fuel selector valve. The pilot can select the tank the fuel is drawn from or switch off the fuel supply (in case of emergency off course).

I will use the Andair fuel pump. This fuel pump sits just in front of this fuel valve cover on the F-782C center cabin cover. Andair has some plans for the RV-7 where to cut the hole in the F-782C. I also ordered the dog house that covers this pump. Most people have issues making the sharp bend in the fuel line behind the fuel pump and filter coming from the fuel selector switch. Since I will be installing gascolators from Andair which already have an integrated fuel filter, I will not need this construct. Nevertheless, you need to make some room to allow the fuel line to pass through the fuel valve cover. I made the measurements as per the Andair plans and cut out the lower part. Used a pilot hole and unibit to cut the corner radiuses, rest is traditional cutting, filing, edge deburring and sanding.

I have cut off the tab of the fuel valve plate. This tab is used when you have a manual trim system. Sinve Vans delivers the ray allen trim motors these days with the kit, it's a no brainer.

Then took the cover plate of the Andair fuel selector and centered it on the fuel valve plate.

All deburred, dimpled and countersunk.

Cut the hole in the plate for the Andair fuel selector pass through.
Vans has already put some holes in the plate which are totally useless for me. So the'l be there and serve no goal. Fortunatly, they are covers by the Andair plate.
Making the whole was actually a bit of a hassle. It's a 1inch hole and I don't have any cutting tool that cuts one inch. And it's to small for a fly cutter. So I ended up making and undersized hole and enlarging it with the die grinder and a worn out small 1" deburr roll.

In the end it worked out good, Here is a temporary install to get the idea.

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It’s possible (not likely) that I’m not as smart as I think I am. (Occasionally, I have moments when I know this to be true. Fortunately, the feeling passes quickly.) Although I have tried to make this information as accurate as I can, it is not only possible, but also quite likely, that erroneous and misguided information lurks within these pages. I cannot and do not warrant these pages to be error free and correct. Furthermore, I accept no liability for the use of this (mis)information. And, as many would say, your mileage may vary. If, after reading this, you are intent on proceeding, please be aware that the contents of this site are protected by copyright (copyright © 2011 and 2012). Nonetheless, you may copy this material subject to these two conditions: (1) any information used is for non-commercial purposes, and (2) the source of the material is properly credited. Of course, you may link to any page herein. At some articles, snippets of the plans from Vans are visible. These are for educational and illustrations purposes only and should never be used as plans for part construction or assembly as plans may have changed since the picture was taken and more important they are protected by Copyright by the Vans Aircraft Mothership company.

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