An EDF Concorde - in Depron.

thats my wife beside the leg, she is 5'4" tall, just to give you some scale.

Just completed the underside skinning (you can still see the pins holding in the last plank!)

It is now just about rigid enough to be handled so work can start on the top side - and there is even more to do on that!

The first step on the top side is to add webs between the webs!

These correspond to the fuselage skin line.
Now comes the arse about face way of this build - cut out quite a bit of what I have already done!

The result will be an integrated wing/fuselage monocoque. It will save quite a bit of weight with no real strength penalty.

If I ever built another I could achieve the same effect rather more effectively by building the fuselage first and then adding the wings but then hindsight is a wonderful thing.

This is a very clever build, and you are doing it all from your head, brilliant

Slowly cutting out the rib and wing skin down the length of the wing.

Slow and needs care. If only I had thought the construction sequence through a bit more none of this would have been necessary!
When complete I can start adding the fuselage formers.

All the centre rib and skin cut out.

Very frustrating as it took time to do yet does not progress the build but it did eventually allow some real progress.
The RH top skin glued on.

A huge length of glue to apply (about 20ft or 6.2m!) but the wing certainly seems stiff and strong enough.
Now whether I can make the other side exactly the same..........
You can just see the aileron servo under the skin.
The weight of all the motor/ESC cables is a concern so I intend to put the ESCs towards the rear as well and take a single heavy duty (50A) cable forward to the battery.

I am more than quite impressed

Another fascinating build Q, your skill in working Depron is quite remarkable!

Happy New Year
Andy

It is such a lovely neat build, can't wait to see this flying

Brilliant work Simon congratulations so far.

Gents, thanks for the kind words. Much appreciated.

This project is giving me some sleepless nights as almost as soon as I have done something I think of a better way of doing it!
I have a concern both about the weight of all the cables and how to best cool the ESCs which I had already noted get warm quite quickly. My original idea was to mount all four ESCs in the fuselage.
However after some cogitation a neat solution appeared to be to mount the ESCs in the wing but with their heat sinks flush with the inside of the duct. No drag penalty and plenty of air passing!
In addition it would save weight if the motor wires (they are remarkably thin) were soldered directly to each ESC.
So another trial for the 'test' nacelle.

It certainly works BUT it needs top access to the lower wing skin to do it and what have I just done?
Solve one problem and you get another!
A bit more 'cogitation' required to get round this one!

Wow, your dedication to this production amazes me Q. Keep it coming, its fascinating

Garry

There is so much to consider when you build this type of model isnt there.