Boulton Paul P.111A (oz1873)


Boulton Paul P.111A (oz1873) by D Golding from Aeromodeller 1954 - plan thumbnail

About this Plan

Boulton Paul P111A. Scale delta model for Jetex power. May 1954 Aeromodeller.

Quote: "One of the earliest deltas, the P.111A has always attracted modellers with its clean lines, stubby fuselage and general pert appearance. Besides stubbiness, the body also features from the modellers point of view a capacious interior and easy curves which lend themselves to moulded sheet constuction.

DP Golding has taken full advantage of these points in this neat and smooth-flying scale model.

Construction commences by carving a solid block fuselage (preferably from obechi); this is the only 'awkward' stage of the construction, but it is essential for true scale appearance. The block is carved 1/32 in undersize overall, smoothed and given one coat of clear dope. Four sheets of fairly soft 1/32 balsa are required, and one of these should be soaked in hot water for about ten minutes. After shaking or wiping off the surplus, lay one edge on the fuselage block centre line and bind tightly with 1/4 in rubber. Where wrinkles occur (probably two at each end) cut and allow to overlap, butt-joining when dry.

The corresponding quarter should be made in the same way and, when dry butt-joined to the first piece, replacing the complete half-shell on the former and binding in place. Steam in front of a kettle for a couple of minutes and allow to dry before removing and laying aside.

The bottom half repeats the process, and two 1/32 x 1/4 strips are cemented along the edges to facilitate jointing. Rubber marks, etc., will sand away quite easily.

Construct all formers and fit in F1-5, the lower halves of F12-15, and F16, followed by the motor mount. Add top halves of F12 and 15, and F7-11 and install the augmenter tube which must be accurately lined up and will need approximately 3 in cut off the end.

Build fin, etc., and fair in place and make parachute housing, which is added after completion of the fuselage. Fit and align top shell and cement in place. Silk cover the lower half up to just above the join and cover the top with rag tissue..."

Update 03/09/2015: Replaced this plan with a clearer copy, thanks to hlsat.

Supplementary file notes

Article page, text and pic. Also, previous scan version.


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Boulton Paul P.111A (oz1873) by D Golding from Aeromodeller 1954 - model pic


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