Peril (oz2116)

About this Plan

Peril. Sports free flight model, low-wing design for 0.5-0.8cc power. Aeromodeller April 1967.

Quote: "PERIL. Designed by S Pearson. A tough little 24in wingspan sports free flight model for 0.5 to .8cc engines. Designed to bounce away from prangs.

The model was built in 1959 and is still flying powered with the original .46 E.D. which has been re-bored at least three times since first installed! The model has a very lively and somewhat unpredictable flight pattern under full power, beginning with a tight left turn frequently 'beating up' the launcher, and gradually opening up as altitude is gained until a series of really clean, large diameter loops are performed. A fast though relatively flat glide follows with a wide right turn.

Construction. Formers F1, 2 and 3 are cut from ply and assembled with the 1/4 in and 3/8 in hardwood bearers. Double cementing, Aerolite or Araldite are recommended here. Cut fuselage sides from medium to hard 1/16 in sheet. When the bearer/former assembly is set, cement the two fuselage sides to F2 and 3 and check for squareness.

Insert F4 and 1/16 in balsa cockpit floor. Pull the fuselage together at the tail, make up the tailpost and bind the skid to it and insert into the tail end. The rest of the formers can now be added. In the original the semi-circular tops were cut separately and cemented in place when the lower fuselage assembly has set.

Cement all the top half formers in place, add the 1/8 in x 1/16 in spine and cover the top with 1/32 in sheet. Cement in the 1/16 in cross grain piece running from the noseblock to F3A. Tack cement the soft block piece above it and carve and sand to shape, also the corresponding piece below the fuselage (cement this in permanently). The noseblock may also be added, carving and sanding to accept the engine..."

Update 23/04/2018: clearer copy of complete article added, thanks to MikeT.

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