Slingsby T-31 - Scale free flight towline glider. From Aeromodeller April 1958. This glider known in the RAF as the Cadet.
Quote: "Build a 54 inch wingspan scale glider for sport flying, by J. WILSON
Slingsby Tandem Tutor (T.31)
RETURNING BACK TO his farm in Falkirk from a holiday gliding course at Cairnbulg Aerodrome near Fraserburgh, last year, John Wilson decided that the Tandem Tutor in which he enjoyed so many hours of flying, was the ideal subject for a flying scale model. Living on a farm, with no space or transportation problems he made it with a one-piece 54 in wing, and the result is seen in the two photos at the foot of this page. Construction is as near as possible made to duplicate that of the full size which, incidentally, is known in the RAF as Cadet 3.
Those who have closer association with the single-seat Tutor will be able to convert the fuselage by eliminating the rear cockpit. A high proportion of the gliding clubs offering holiday courses are equipped with the Tandem Tutor and we are sure that Mr Wilson's design will be popular with those who learn to glide during the corning year.
The basic 1/8 square fuselage sides are built over the plan as shown in chain clotted line and the wing mounting pylon frames fitted to F2, F3. These formers arc then used to key the two sides together, other spacers and formers added, then the 1/16 in sheet overlaid and 1/16 in square dummy Warren braces fitted to reproduce the full-size construction.
The nose block should only be rough shaped before fitting to the front face of F1. No separate wire towhook is necessary as the end of the dummy nose skid comes conveniently at the correct position and is a most effective hook. Provision is not made for an auto rudder, but as this is not intended to be a high performance model, one should be content with the occasional premature release.
The tailplane is slightly enlarged over scale in order to improve performance and is a very simple construction, being flat plate 1/8 in x 1/4 in frame..."
Update 25/09/2017: added article, thanks to RFJ.
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