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Aviomodelli Caproni Calif A-14 . . after the crash.

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Max Wright
Posts: 198
Joined: 10 Mar 2020, 19:57
Location: Clayton Bay South Australia

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Max Wright »

OK I'm still waiting for my magnets to arrive so I can start my first proper build.

It's been nearly a month now. The Covid 19 has really played havoc with deliveries. :x

Anyway, I've still got this fellow to play with . . .

Caproni Calif A14-39.JPG

This is where the old Graupner box used to be. My router made short work of that.

I had to put in a side panel next to where the cables run. It's 2mm ply and will help support the spar. 8-)

Caproni Calif A14-40.JPG

This is the tube which takes the 15mm carbon fibre wing joiner. It will be the same length as the old Graupner system, extending 300mm into each wing.

I'm using the root ribs and the moulded part of the fuselage as a guide to set the dihedral. The wings are polyhedral, with the tips carrying the ailerons.

Once the wings are set up correctly with the laser on blocks, I'll pour epoxy into the spaces. Then I'll fabricate the rest of the bottom of the wing and cover it with 0.6mm Finnish Birch ply.

Well, that's the plan anyway. ;)

This is going to be a much more sophisticated craft than the original Aviomodelli.

Cheers
Max
User avatar
Max Wright
Posts: 198
Joined: 10 Mar 2020, 19:57
Location: Clayton Bay South Australia

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Max Wright »

This is how it's looking after the epoxy has been poured around the wing tubes . . .

Caproni Calif A14-41.JPG

Once the epoxy had set up, I cut a piece of 2 mm ply, 22 mm wide and 320 mm long and epoxied it in to replace the lower wing skin. Then the filling and sanding began.

Caproni Calif A14-42.JPG

The three hatches in each wing have been covered with masking tape in readiness for the putty paint.
Max
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Max Wright
Posts: 198
Joined: 10 Mar 2020, 19:57
Location: Clayton Bay South Australia

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Max Wright »

The left wing is done!

Caproni Calif A14-43.JPG
Caproni Calif A14-44.JPG
Caproni Calif A14-45.JPG
Max
User avatar
Max Wright
Posts: 198
Joined: 10 Mar 2020, 19:57
Location: Clayton Bay South Australia

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Max Wright »

Finally. Both wings done!

Caproni Calif A14-46.JPG
Max
B Sharp

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by B Sharp »

You are getting there Max. By the way, I am very envious of the size of your workshop.
Brian. :)
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Max Wright
Posts: 198
Joined: 10 Mar 2020, 19:57
Location: Clayton Bay South Australia

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Max Wright »

Thanks, Brian.

When we bought the house a couple of years ago, I was attracted by the 8m x 7m garage with 5m high walls.

I never actually gave the house a second look. :P

I built a mezzanine floor in the garage for my man cave and went on from there.

The walls are still not flushed and painted, but the insulation and airconditioner are in. :lol:

Cheers
Max
Barry_Cole

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Barry_Cole »

Max Wright wrote: 23 Oct 2020, 22:03 Thanks, Brian.
I was attracted by the 8m x 7m garage with 5m high walls.
Brian,
That's not a garage, that's a warehouse.....

8-) 8-) 8-) 8-)

BC
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Max Wright
Posts: 198
Joined: 10 Mar 2020, 19:57
Location: Clayton Bay South Australia

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Max Wright »

:lol:
Max
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Max Wright
Posts: 198
Joined: 10 Mar 2020, 19:57
Location: Clayton Bay South Australia

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by Max Wright »

When I lifted the assembled model, it seemed extra heavy. So I stepped on to the scales, deducted my 90 kg and the residue was 4.5 kg. The wings together have an area of 0.570 m² = wing loading of 126 grams/m².

I have a South African friend who lives in Hungary; who guided me through the calculations.

He also showed me his calculator for GC which indicates that the swept back wings will take the CG forward rather than back - which was the direction my intuition was taking me. ;)

I'm not experienced enough yet to know if a wing loading of 126 grams/m² is good; or not. :?

Preliminary balance tests are pointing towards having to add weight to bring the CG forward, so it looks like I have some wriggle room.

I have heard that nose heavy models can fly poorly, but tail heavy models fly once. :shock:

Cheers
Max
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BrianF
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Joined: 19 Mar 2018, 09:36
Location: Brisbane AU
Contact:

Re: Aviomodelli Caproni Calif A-14 . . after the crash.

Post by BrianF »

Full assembly shot?
Der Himmel ist blau und die Luft ist gut!
www.seqsa.net
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