I am building a VANS RV-4 aircraft. If your not involved in homebuilt aircraft it wont be too interesting, but if you are a part of that elite group it just might be. My intention is to include ONLY the interesting details, so the rate of change will be quite slow!

Tuesday, May 20, 2008


Time to go flying!

....well not quite though I am nearly there.

It needs to be weighed and the upper gear fairings installed.

We did a snagging list the other day and it was trivial except for one item. I may yet have to take the engine out to change the fitting where the oil pressure comes out of the engine. It appears it was damaged and does not make a good seal.

Hopefully, it will be weighed by this time tomorrow.

It was scary specifying the colour scheme though I am extremely pleased the way it has worked out. It certainly gathers and shows dust though.

John Stahr did the painting and had massive input into the design detail. He is Oregon based and I highly recommend his work.

(Double click the pictures if you want to see detail.)


Wing and electric detail added plus fuel flow.

A few details of the wings and electrics have been added. If you go to wings you can see details of my OFPSS flap position sensor system together with the magnetometer and transponder antenna mounting.

At electrics I have shown details of the wiring behind the panel. It looks very untidy I am sorry to say. I just find it hard to make it look tidy.

In the UK, the LAA (was PFA) ask us to run a fuel flow test. This is to check that the flow of fuel from the electric pump considerably exceeds the maximum demand of the engine. I am not sure where they would consider the flow was inadequate. I think the major thing you are checking for is blocked fuel pipes, perhaps kinked in construction. The O-320 has a max demand of about 53 lph and the Facit pump was pumping about 105lph from either tank, to the fitting at the entrance to the carb.. That was good enough for me.

Friday, May 09, 2008


Canopy installed today.

The canopy went on for the final time today, and for the first time since painting. I forgot to run the pin through a bit of Scotchbrite, so it was a battle.

The canopy needs a good clean but then so does the whole aircraft right now. Its dusty in my hangar.

I am currently finishing up the ignition harness and I need to get the tank back on. I am also draining the preserving oil in anticipation of the first engine start.

(Double click for bigger pictures.)

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