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

 

Last in the series of bulkheads is the F-712 bulkhead.

The function of this bulkhead is to support the tailwheel fork structure and to hold the rear spar of the vertical stabilisor.
This bulkhead forms the lowest point of your plane.

This is probably the most simple of all the bulkheads for now. Deburring of the edges and notches.

Then clamp both parts back to back and backdrill all the 3/32 holes with the  #40 reamer.

My golden rule these days is: if the holes are prepunched, always ream ! never drill. The hole is much nicer and precise with a reamer

To keep all well aligned, I also used some #12 clecoes in the tooling holes.

The parts will be rivetted with AN426-AD3 rivets. The flush side needs to be on the back part (F-712B). The reason for this is that the rear spar of the vertical stabilisor will lay flush against this bulkhead. Pay special attention before you start that you have the dimples on the right side.

All done.

Next, I will do some more work on preparing the firewall. My fellow builders tell me to do a lot of the placement work on the firewall upfront because drilling in the steel plate is much easier if you can still lay the plate down on a workbench. It all becomes much more difficult once the firewall is installed on the fuselage. Also, some rivet holes need to be drilled out to #12 and it's much better to do this now before all stiffeners are rivetted on (chips getting lost between stiffener and firewall, steel chip choqueing in between. All very hard to solve once it's all rivetted)

More on that later.

How to use

Use the kit buttons in the top ribbon bar to see a chronological overview per sub section per kit. For the full chronological article list, see chronological build link in prelude menu here below. The easiest way to lookup information is by typing in some part numbers or keywords using the search option in the ribbon bar

 

Caution !

Some advice on reading my log for fellow builders !

In some articles, I made corrections at later date on the original article to rectify my own stupidities or faults. Read through the entire article if you intend to use my findings/experiences on your own project !

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Legal Mumbo-Jumbo

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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