Coxy (oz13213)


Coxy (oz13213) by Leon Janssens 1973 - plan thumbnail

About this Plan

Coxy. Control line stunt model, for .049 engines. Wingspan 495 mm.

As requested on the wanted page.

Quote: "All those wishing to fly aerobatics in control-line do not always have a large circle at their disposal to fly large size stunt models from. With those modelers in mind and at the same time the many owners of an .049 Cox engine 'left-over' from one of the plastic models, Leon Janssens has designed the Coxy. Make no mistake about it, the Coxy is fully aerobatic and will demonstrate all of its stunting qualities in a restricted space."

Direct submission to Outerzone.

Note this planfile is derived from the raw scans posted by user jef on the forum (see datafile). Here they have been aligned, stitched onto a single sheet, and cleaned up to remove paper creases, tears, glue marks, etc.

Note main model pic and spec sheet [pic 003] are taken from the 1973 Svenson catalogue, see Mary's page at


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Coxy (oz13213) by Leon Janssens 1973 - model pic


Coxy (oz13213) by Leon Janssens 1973 - pic 003.jpg
Coxy (oz13213) by Leon Janssens 1973 - pic 004.jpg
Coxy (oz13213) by Leon Janssens 1973 - pic 005.jpg
Coxy (oz13213) by Leon Janssens 1973 - pic 006.jpg
Coxy (oz13213) by Leon Janssens 1973 - pic 007.jpg
Coxy (oz13213) by Leon Janssens 1973 - pic 008.jpg

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User comments

There must be a 2nd page, where are the formers? I really like this one, such a shame.
How - 28/11/2021
It's a kit plan. There is no 2nd sheet. Because all the parts arrived in the box, you needed no drawing of the parts. We have tagged this plan as 'kit' and 'formers unchecked'. But the design is very simple. Slab sides. Constant chord wing. Triangular section turtledeck. Should be quick and easy to draw up the parts you need, no?
SteveWMD - 28/11/2021
Also, see the Dutch build thread by Jef with some great pics showing the parts and assembly here:
SteveWMD - 28/11/2021
The Coxy looks like a very close copy of the Mini Zilch from 1949 designed by Jim Saftig that was sold by Berkeley models. SIG Manufacturing has a laser cut kit of it. The differences are the shape of the canopy, position of landing gear and the rounded leading edge of the wing. See:
titoplane - 05/02/2022
Hi Steve & Mary, Some pictures of my 2 Coxy's that I built as well as a early Coxy kit and mine 1.5x enlarged Coxy [mainpic, 005-008].
Jef Lemmens - 23/10/2023
Well, how are you, first time I failed building a model, I was left out of alignment, therefore I am going to build the fuselage again, when you download the plan. Make sure it is at the wing length that it says, otherwise the fusel will fit smaller greetings
gustavo ulises quiroz - 27/10/2023
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