Pjerri 83 (oz10898)

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Pjerri 83. A/2 contest glider model.

Quote: "Defy those winds with Denmark's leading A/2. Tough structure on this rough weather design. Pjerri, by Danish Champ Borge Hanson.

WHAT'S THE USE say some of our readers, if to get anywhere in A/2 competitions we have to build super-refined continental designs calling for jig construction and detail taking far too long to build and crashing all to quickly in typically British windy weather.

To answer these requests we sought the design used by leading Danish aeromodellers for a number of years, created by the well known Borge Hansen of Copenhagen. Here is a model which has proved in the years since 1956 that it can fly well in still air, matching performance of many more sophisticated creations but really comes into its own in thermal conditions and strong wind. Those who know Denmark will appreciate Danish weather conditions which are, frankly, enough to deter all but the hardiest of free flight enthusiasts. Models have to be strong, easy to trim, and to repair.

In consequence we can offer 'Pjerri' (the name incidentally is an old Hansen family named 'Peter' which has been handed down through generations) as just the type so many British modellers have been seeking. As a matter of interest designer Borge Hansen has been in 15 Danish national teams and has taken part in every A/2 World Championship since 1950. In 1951 he was 12th, in 1952 4th, in 1953 10th, and in 1956, with Pjerri, 4th. Three times he has been Danish glider champion and this year was second again with Pjerri.

An instance of the simplicity of this model which will appeal to the majority is Borges instruction for trimming. Make sure, he says, that the tow hook and centre of gravity are exactly as positioned on the drawing and pack up the trailing edge of the tailplane with small pieces of paper to obtain the best glide. The model should turn to the right in a diameter of about 100 feet and in still air will average between 2 mins 45 secs and 3 mins duration from a standard 164 feet tow line.

The fuselage is typically Scandinavian following the traditional pattern of a 1/4 in spruce or obechi centre core and hard 1/4 x 1/8 longerons balsa covered on either side with it 3/16 medium balsa sheet. The nylon auto-rudder line must be fitted before the final side is applied. Details are given on the plan for making the wing tongue of 5 laminations of 5mm plywood..."

Pjerri 83, Aeromodeller, September 1960.

Direct submission to Outerzone.

Supplementary file notes

Article pages, thanks to RFJ.

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