Black Chiffon (oz3927)


Black Chiffon (oz3927) by C Milford 1952 - plan thumbnail

About this Plan

Black Chiffon. Control line team racer. From the Aeromodeller of October 1952.

Quote: "NOW that Class A team racing has thoroughly established itself as an even more popular item than Class B, we can easily deduce from performance of winning machines, that the 2.5 cc diesel is best, and that it is more usual for an inverted engine to receive the chequered flag first. Black Chiffon, named for the attire of its curvaceous occupant, comes within the specification for a winning Class A model, and since it has been developed through a series of five machines, one may well undertake construction with every confidence.

Construction. Start with the wing by cutting out the lower surface template from butt-joined 1/32 in. Pin over plan, cement lower spar, ribs and LE in that sequence, chamfer LE and cement on. Score at centre line and prop up starboard side to 1-1/4 in dihedral. Make up bellcrank with push rod and lead-outs, assemble between ply mounts and add root ribs against these, with lead-outs through ribs, and all movement checked free. Add LE bridge piece, top spar, and upper surface of port wing. Un-pin and add top of starboard side and the centre section top, allowing a roomy slot for push roil. After adding tips, sand whole to correct section.

Lash finished u/c to bulkhead, cement to bearers, also F.2. Add wing mounts, fill sides with 3/32 in, shape top block above bearers and steam sheet for tank department lid. Assemble F.4, 5 and 6, on to 1/4 in squares, mark former positions inside the sides, pre-cement with Britax, steam sides, join together at tail with wedge piece and cement over formers. Add backbone, sand to shape. Tail parts are as normal.

Now attach front fuselage to wing, adding scraps to fill, add rear fuselage, threading push rod through and making sure of a good junction with both wing and front fuse; then add tail parts and soft balsa fairings. Build the air outlet under wing, add bottom skin, cockpit floor, pilot and canopy..."

Quote: "Black Chiffon is a Class A (2.5cc) team racer designed by C. Milford. It was designed after team racing had been on the books for a year or two and people were getting a feel for the type of planes that were winning races and inverted engines seemed to be the way to go. I'm not sure if the plane actually placed in any races but it had been developed over five models. Interesting finish details! As always my drawings are but tracings of blown up scans and may well contain errors, please measure twice before committing to any knife work."

This is a modern redrawn plan in PDFvector format.

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