Noorduyn Norseman (oz15531)

About this Plan

Noorduyn Norseman. Free flight scale model. Wingspan 76 in. Scale is 1/8.

Quote: "Noorduyn Norseman. In presenting the plans for an eighth scale model of this ship it should be mentioned at the outset that it was quite impassible to include every minute structural detail in this article; as the reader can readily understand it would take perhaps a dozen pages of drawings alone to give a complete picture; however it is safe tosay that the details given are certainly sufficient to supply all the necessary information required without having to use more than a modicum of imagination.

That the reader has glanced over the Elabefore reading this is certain; that enZlas perhaps a little confused at what appears to be conflicting information is at least probable. The author then hastens to explain that he has really presented three variations of the same model: (1) a simple free-flight scale job with fixed control surfaces; (2) a "goat" with movable elevator; and (3) a ship, with ailerons and elevator activated by the automatic mechanism diagrammatically shown on Plate 1.

CONSTRUCTION DRAWINGS First make a scale by transferring the scale on Plate 2 to a piece of stiff white drawing paper; this is done by laying the printed sheet face down onto the drawing paper and rubbing through the back of Plate 2 until enough printing ink has been transferred for easy legibility.

When laying out the full size fuselage and wing, dimensions can be read directly from the scale. Accuracy is of first importance if full size formers on Plate 4 are to fit properly in place.

The fuselage can be drawn on brown wrapping paper but the half-wing should be laid out on tracing paper; this makes it unnecessary to draw up the full wing as the tracing paper can be turned face down and construction of port half of wing can be done on the back of drawing.

Note that the wing plan on Plate 3 has been broken, use the dimensions given as a basis for the drawing. Take into consideration the type of ship being built and whether or not ailerons are needed. If wing has no movable control surfaces they can be simulated by strips of black paper on final covering.

A template from the full size wing rib on Plate 2 should be made of stiff drawing paper by the same transfer method as used for the scale. Another template of stabilizer ribs can be made by enlarging the section, also on Plate 2, to twice the size shown.

FUSELAGE:The basic frame of 1/4 in square hard balsa consists of the two identical sides built one on top of the other directly over the construction drawing. When the sides are thoroughly dry they are split apart, attached to 6-3/8 diameter firewall and former No.11 before cross members and bracing are added. Make sure structure is square before putting away to dry.

Motor mounts of either metal or wood should be affixed at this point while the frame is sufficiently open to allow easy access to bolts or screws. Build motor mounts to suit individual motor but take care to keep thrust line in its correct location.

The tailwheel sub-assembly and the soft balsa fairing at the bottom of fuselage from former No. 11 to rudder post are next firmly cemented in place.

The undercarriage sub-assembly shown on Plate 3 is more in the interest of authenticity than simplicity. A very serviceable alternative could be made from 1/8 diameter steel wire bent to a shape and size which would allow for stiff paper fairings to simulate the original. As a matter of interest, the undercarriage shown (less wheels) supported a weight of 165 pounds without sign of stress. It was made of rock-hard material joined with plastic resin glue.

The undercarriage should now he firmly cemented, bound and wisely braced to the fuselage after which the full size formers on Plate 4 are cut out of 1/16 hard sheet and cemented into their exact and proper location..."

Direct submission to Outerzone.

Cleanup by Circlip.

Supplementary file notes

Article.

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