Sky Gipsy - simple gas free flight, 27.5in span from Aeromodeller.
Quote: "Skygipsy has been designed to fit diesel engines of .75 - 1cc capacity. The original Skygipsy is fitted with an Allbon Super Merlin (52/7d) driving a 6x4 in flexible plastic propellor and has the most impressive glide and climb you could wish to see.
When building Skygipsy, if you follow the stage-by-stage sketches (on page 46) and read the notes on flight trimming carefully, you can be assured of possessing a model that will give you hours of steady flying.
A glance at the assembly sketches will give You confidence to begin, as you will immediately recognise the fact that the same building method (sheet sides locked to formers with built-up wings) is employed for SKYGIPSY as for the other models in this book (the GEE-BEE control line trainer excepted). You will, therefore, find the construction familiar and perfectly straightforward.
Cut the hardwood engine bearers (lengths of hardwood are obtainable at your local model shop). Mark on the bearers the positions of formers 3 and 4. Cut out formers 3 and 4 from 1/8 plywood. Check at this stage that the bearer holes are wide enough apart to take the crankcase of the engine you are going to use On the plan, the holes shown are suitable for the Allbon Merlin, Super Merlin and Mills .75 engines.
Form the undercarriage wire and bind to former 3. Now slide the formers into position on the engine bearers. Use a set-square to make sure they are upright on the bearers and at right angles to the hearers when viewed from the top, before the cement hardens.
Now carefully drill the holes for your engine bolts. A very important point: Note that the holes (see plan) are at an angle, so that when the engine is bolted in place it will point slightly to the right (viewed from rear). This off-set angle, as it is called, is important, as it counteracts the twisting action of the propeller (torque), which will try and hank your model steeply and sometimes dangerously to the left..."
MikeN mailed in to say - this was published in the Eagle Book of Model Aircraft circa 1959.
Update 21/03/12: Added article pages.
Update 05/09/2015: Have re-sized this plan up to the correct wingspan at 36in (and removed the reference to wingspan at 27-1/2in), with thanks to PeterScott.
Article pages, text and pics. Also, previous version of the plan (scaled wrong). Also, a zipfile containing 4 Word docs with decal art for the tail fin.
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