Purist Plea (oz10662)
About this Plan
Purist Plea. Free flight power sport model.
Quote: "Purist Plea. A plea for model aeroplanes that really look like aeroplanes - supported by this realistic semi-scale cabin design for the Mills 1.3, by DP Golding.
Building Instructions. Fuselage. NB First cover the plan with greaseproof paper. All wood is medium balsa unless otherwise stated.
Commence at noseblock B by pinning down the middle longeron of 1/8 in sq which extends to Former 4. Next pin down top longeron 1/8 in sq. This starts at Former 4 and extends to sternpost. Next pin down bottom longeron, which must be steamed to shape before being pinned down in position. When this has been done, cement in your uprights 1/8 in sq, starting at noseblock B, then one between Former 3 and 4 then at Former 4 and so on to sternpost which is made from 1/4 in sheet. When this side has set repeat process over existing framework, only cover with greaseproof paper again, to prevent sticking.
The next step is to cut out the two sides of the fuselage from 1/16 in sheet; each side will be made up from two sheets joined along the datum or thrust line for preference. Care must be exercised when cutting out cabin windows and hole in starboard side (for choking engine).
When the two sides have been cut and checked for accuracy, score and crack slightly at Formers 2 and 4. You can now cement your two framework sides on to these. The next step is to cut out all your formers from 1/8 in sheet (hard). Former 2 has slots cut in it for engine bearers ; Former 2a sits on top at an angle and takes place of instrument panel. Former 3 has centre cut away for lightness, the bottom decking piece can be made up separately as grain should go at right angles for strength - -this piece will go on after the undercarriage clips and wire legs have been inserted. Former 4 has centre cut away also.
Before 'marrying' the two sides of fuselage cement in two 1/8 in strips where shown - these run obliquely from the base of Former 2 upwards. You can now cement in Formers 2, 3 and 4 and to ensure correct alignment add 1/8 in sheet gussets where shown. Now to get the sternpost in line, use a 24 in. metal ruler or plumbline, letting it run through the centres of F2 and F4..."
Purist Plea, Model Aircraft, July 1954.
Direct submission to Outerzone.
Supplementary file notes
Article pages, thanks to RFJ.
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