English Electric Canberra - in Depron of course

Next is to build an outer wing panel both to work out the best? way to actually make it and to structurally fix it to the nacelle.
The lower skin of the D box.

AS I go I am cutting pairs of everything so ready for the other side.

The completed "D" box is rigid enough to allow the rest of the wing structure to be built from it 'in the hand'.

A rather unusual way of doing it and rather fiddly. It does require quite a bit of 'eye ball' to keep thing straight and true but it seems to work ok.
It weighs 6.6g.

After finishing the outer wing panel the next task is to glue it to the nacelle so I can get some idea how rigid and strong it will be given that it just Depron with no reinforcing at all.

A bit of a b***** to fit as the nacelle on the Canberra is canted up slightly compared to the wing datum still even before the glue has fully hardened and just holding the nacelle the joint was able to support a 2oz weight sitting on the wing tip.
Next comes the wing centre section. A bit more complicated to make as the dihedral break is on the fuselage centre line suggesting the wing centre section would have to be made in two halves and joined.
I have not decided yet exactly how to do it.
The other outer wing panel is under way.

This is where the build starts to get a bit boring doing the same sort of fiddly operations for the rest of the wing structure.
All the bits I have made so far.

Construction does speed up a bit as it is mostly copying what I did before but nevertheless the Depron construction rate is nearly 1 hour per gramme!
It is just as well it is very light.

Sorry Q, must wholeheartedly disagree with the first line of your post. The day that any of your builds get boring I will eat my lappy.
Keep them going mate please, and I am sure I speak for the rest of the members .

Garry

Gary thank you for that but ...er.. I was referring to my feelings. You can't see my boredom in the pictures!

it's fascinating watching you work so delicately with depron.
i struggle to not break the huge heavy lumps i use.

The nacelle is now fixed to the wing centre section and a modest start made on the fuselage centre section.

The replacement EDF has arrived so I no longer have an excuse not to start the other nacelle!

Great build, really enjoying it!

Andy

Os!

A start on the second nacelle

The first bit of the fuselage skinned.

My usual ring formers and planking.
It make you realise how small the Canberra fuselage was, just twice the diameter of the engine nacelle.
This is about as far as this bit can go. The rear fuselage and tail feathers are next.

The rear fuselage half formers on the plan.

The formers are glued onto temporary top and bottom keels and then planked.

Lifted from the plan showing the temporary keel pieces.

With the keels removed the other half of the formers can be added.

The most difficult bit will be squeezing the elevator servo into the fuselage in such a way that it can move both aileron halves on the distinctly dihedral tailplane.

The second nacelle formers glued onto the paper thrust tube on its mandrel.

Now that has to be planked as well.

wow such delicate work.

i often marvel at how you manage to build so carefully, my hands would destroy that in 5 mins flat.

The fuselage tail section complete.

The top section cut out to seat the 3mm Depron tailplane.

The 2.5g servo just fits in the fuselage.
The skin section refitted.

The servo horn just protrudes through the top of the fuselage so Individual links can go back to each elevator half although the RH link will have to pass through the base of the fin.
I think it will work!

it will work, i have faith in your building skills.

For structural and space reasons the servos on the Canberra will end up several inches away from the control surface they move which tends to make the push rod link relatively heavy.
I say relatively because the servo only weighs 2.5 g. I really don't want the horn and push rod to end up weighing as much.
So I built a 'test' 5" (130 mm) push rod reverting to good old hard wood (1x2 mm) with an acetate clevis and horn connected with a pin (literally!) joint .

It weighs 0.38 g.
The same principle applied to the 'divided' push rod for the elevator servo.

I fear this might be taking 'light weight' to the extreme and I may yet regret it!