One hour in the workshop but not much progress. Still working in the aux battery tray. Another worker is willing to build a battery box for me, so I will go this route and see how to rivet it to the floors.

I think that the best way to secure the battery is by building a box that will be screwed to the structure of the plane.
I make a test box with a 0,020 steel sheet. The result looks good but a bit flimsy, I will try to find a thicker sheet.



Here the box is in the fuselage. Final location is to be decided as it has to be accessible for maintenance.



And another location, in another bay under the seats.

The wiring diagram and the panel are not yet finished, but I'm getting to where I want. I will install a small backup battery for the electronic screens as the one I want don'thave one included.
So I have to fabricate a bracket.



The battery will be installed under the right seat.

The flaps position system needs to sense the flaps position so I install a linear sensor.
First I fabricate a small bracket with some leftover aluminium. Here the bracket is already riveted in position.



The sensor is then screwed to the bracket. The sensing arm is at the lower right.



Then I use some parts that were part of the aileron trim and that are not used there to connect the sensor to a clamp on the flaps tube. The clamp will be replaced as it's not the correct size.
The part with the red mark will have to be slightly modified as there is some interference with the clevis.
After final assembly some adjustement can be made by moving the clamp or cutting some length from the rod.
On the picture the flaps are up, and the slider on sensor is completely out.



On this picture, the flaps are down and the slider on the sensor is retracted.



I also riveted the small bracket fabricated yesterday and bolted on the microswitch.

I will need the flaps position for two of my systems, so I need to fabricated the sensors' brackets.
I begin by reinstalling all the parts in the fuselage. Some washers are really interesting to get in place.
This is how it looks qith the flaps in the up position.



And the extended position.



The first sensor is a micro-switch that will tell the AoA system that the flaps have left the full up position.
This is a lever type micro-switch. The lever is actuated by the bolt on the cushion clamp (for the time the clamp is too small).
The system allows for some fine tunig by rotating the clamp, adjusting the length of the bolt or folding the lever.