Tiercel FAI (oz10002)


Tiercel FAI (oz10002) by Bill Geddie 1950 - plan thumbnail

About this Plan

Tiercel FAI Rubber model.

Quote: "Tiercel by W. A. S. Geddie. As a sample of the British school of thought on con-test rubber models, we present this proven winner. Note the folding propeller and useful retractable landing gear.

Tiercel is a contest rubber model - with a difference. It is purely and simply a functional design, incorporating such ultra-lightweight features as high parasol wing and long fuselage with rear rubber peg well forward, a large single-bladed propeller and Marquardt wing sec-tion. Yet the lines of the whole model have a definite appeal, the peculiar hump-backed fuselage being particularly pleasing in appearance.

Tiercel is also probably the most flown-away model. The original model built in early 1945 is still airworthy, despite the fact that it has made many hundreds of flights and has been entered in dozens of contests. In all it has been lost no less than fourteen times - returned on each occasion to continue its hard-worked life.

Possibly the best example of its sturdy construction is given by the fact that on one occasion it spent four months in a potato field before being discovered. It was then still in a fit condition to be flown in a contest again a few days later, with no repairs or replacements other than the rubber motor. And, of course, it flew away again in that contest! Tiercel also has the unique record of having flown in three consecutive Gamage Cup events, 1945-6-7, and flying away in each. A dethermalizer is standard equipment - and OOS flights are now less frequent !

A second version of Tiercel, with a smaller area wing and stabilizer plane, won the 1945 Flight Cup - this model being lost completely on its last flight. The original Tiercel won the Brentford and Chiswick open rubber event the same year, and put up the best flight of the day. It also placed fourth in the Model Engineer Cup Meet. It has been placing high in SMAE competitions ever since.

Bill Geddie's Tiercel has also been one of the mainstays of the Zombies' London Cup teams, forming the 'rubber' part of their strongest team, alongside Ron Warring's Wakefields. This team reached the semi-finals in 1946 and the finals in 1947.

Although the lines - and one or two of the gadgets - are unconventional, construction is fairly orthodox. The fuselage is built as a normal slabsider, with two side frames joined by horizontal spacers. The longerons and spacers aft of the rear rubber position are of light 3/32 in square stock, which is scarf jointed to the main longerons. Care must be taken to line these up accurately when laying down the two sides..."

Scan from DBHL, cleanup by theshadow.

ref DBHL-6239

Direct submission to Outerzone.

Update 24/04/2018: added article, thanks to RFJ.

Supplementary file notes



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Tiercel FAI (oz10002) by Bill Geddie 1950 - model pic

  • (oz10002)
    Tiercel FAI
    by Bill Geddie
    from Flying Models
    February 1950 
    36in span
    Rubber F/F
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 17/04/2018
    Filesize: 162KB
    Format: • PDFbitmap
    Credit*: DBHL, theshadow
    Downloads: 533

Tiercel FAI (oz10002) by Bill Geddie 1950 - pic 003.jpg

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