Pen Friend (oz4471)
About this Plan
Pen Friend. Radio control sports racer.
Quote: "Build This Sprightly Sportster For .020 Engines and Lightweight Receivers. Successor to 'Blister', A Pylon Racer in Miniature. Pen Friend, by PE Norman.
This model, which has been designed and built to have simple but attractive lines, should appeal to those modellers who require a small fairly straight-forward model to build and fly. It is in effect a small edition of my Blister (oz4912) but with a very much simplified construction, and is powered by a Cox 0.020 engine.
Two types of wing construction are described, one the straightforward type which has the usual ribs, mainspar, leading edge, trailing edge construction and tissue or silk covering. the other extremely simple to make and consists of a slab of expanded polystyrene, sanded to section and suitably reinforced where necessary with balsa wood. The Rx employed on the original is In Otarion working a Citizenship actuator. the whole battery requirements being 3 volts supplied by two U7 batteries.
Total flying weight of the model is 11 oz using area about 140 sq in. These small models are very sensitive to rudder, so only a slight amount (about 3/16 in, either way) is ample when first testing. This may easily be adjusted by the simple method of decreasing or increasing the angle of the actuator rod, which fits in the slot in the leading edge of the rudder itself.
Radio space should permit the use of MacGregor Minimac RCS Guidance System or any of the other subminiature receivers now available, which do not require extra actuator batteries.
Fuselage. Commence by cutting out the fuselage sides from 1/16 in balsa sheet, and reinforce with another piece of 1/16 in sheet back as far as F3..."
Quote: "Build this sprightly sportster for .020 engines and lightweight receivers. Successor to 'Blister', a pylon racer in miniature by the late PE Norman."
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User commentsHave fixed the mistake in the original text on this one (saying .20 engine) to now say .020 engine. Which makes much more sense, of course :) Many thanks.
SteveWMD - 16/06/2020
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