A1 International postal competition

[dosco]

Lincoln:
The "Gili Chopper" looks pretty neat.

https://outerzone.co.uk/plan_details.asp?ID=8489

A1 International postal competition

[lincoln]

It does, but it has a bit too much combined tail and wing area, assuming the figures on the plans are correct. If I remember correctly, the max is 18dm^2,which works out to 279 in^2. And then there are all those infernal diagonal bits.... Also, when did appear? I don't see a date. Despite all this, if you build one, I promise to admire it.

[dosco]

Lincoln:
If we're to believe Outerzone, a similar design, the Gili "Hatchet" was published in 1948. Just eyeballing things, I'd assume the Chopper was a few years ahead (or behind) the Hatchet. Since the Chopper looks like a simplified Hatchet, I'd guess the Chopper is a few years behind the Hatchet (in terms of publication date).

Yeah, I wasn't sure about the wing+stab areas. Might be entertaining to knock a few bays off either the wing or the tail (or maybe both).

You promise to admire it ... haha! I appreciate your intentions. lol.

-Dave

[USch]

Eureka,
I finally found the original drawing of the CORNET A1. The first A1 I've build in about 1958. Actually lincoln published already a 3-view from the Aeromodeller Yearbook in reply 37.

But having the original drawing in my hands is a different story! I remember I did the wing in white modelspan, no colours available, and a painted, black fuselage. In my memory it was black and shiny as a Steinway piano. I don't remember if it was ever flown.

3 pictures hastily taken. If anyone is interested I will try to have it scanned, just ask !!!

Urs

[lincoln]

The three view and the actual plan don't agree very well. Especially when it comes to the root airfoil.

[stupid]

Lincoln, I was lurking this thread and noticed the discussion about the A 1 Siesta's  tail boom being made of spruce. And Thinking it was too heavy to balance. You should consider using Pampas grass stems for the tail boom if you're still thinking of the Siesta. It is one third the weight of the spruce. I know you would be surprised of how stiff Pampas grass is at this diameter.At about 5 g



Bob

[lincoln]

If I was going that way, I would use the local reeds that I probably mentioned. But I'd rather stay closer to the original design unless it was impossible to balance. I'm kind of waffling between the Siesta and the Jetstream, but a couple of other things come first, once I get my momentum back.