Cessna AW (oz13670)


Cessna AW (oz13670) by Jim Adams 1974 - plan thumbnail

About this Plan

Cessna AW. Jumbo scale model for rubber power.

Quote: "If you think Peanut Scale is popular, you should see what draws the biggest crowd when there's a combined Peanut and Jumbo contest! Peanuts are cute, but these big scalers are majestic! Jumbo Scale Cessna AW, by Jim Adams.

The Cessna AW Monoplane was the first cantilever wing, four place type manufactured and flown at the company's field in Wichita, Kansas. It was powered by a 200 hp Wright Whirlwind engine. The plane was also available powered by the Siemens or Anzani engines, as desired by the purchaser.

A close look at the plan shows the family resemblance to the famous pre-war Cessna Airmaster and today's Cessna 195. Obviously, the AW is the granddaddy of all of them. The Cessna Monoplane had a wing span of 40 feet, 6-1/2 inches and length of 23 feet, 8-1/2 inches. The wing was constructed of spruce and plywood, while the fuselage, landing gear and tail group were made of steel tubing. The entire airplane was fabric covered. Outstanding features of the plane included its simplicity and distinctive appearance due to the lack of struts.

Construction of the model is very conventional and requires very little explanation. The most important thing to remember in building a Jumbo rubber scale model is to keep the weight to a minimum. This is true with all scale models, but must be particularly emphasized on the large ones. Extra weight will penalize your model during the climb by forcing you to add more rubber - which in turn adds more weight.

The 3/32 sheet stripped ribs (a la indoor style) are not absolutely necessary. If you should desire to use sheet ribs, use 1/16 light sheet balsa and substitute 3/32 square spars on the top and bottom of the wing in place of the sheet spars called out on the plan. The strip ribs are trimmed to the length shown on the plan by cutting excess length from the rear end of the ribs. Patterns are given, one for the ribs between the center and the rib half way to the tip and the other for the ribs from the mid-point on each wing panel to the tip.

Wing construction is started by pinning the leading and trailing edges down over the plan, and adding the 3/32 square lower ribs (Note: These are located at every other rib location.) Add the spars and then trim and cement the previously stripped upper surface wing ribs into place.

The recommended tail construction is laminated per instructions in Model Builder issues. The material is 1/32 x 1/16 inch basswood strips. Paper surfaces should be water shrunk after covering and given two light coats of clear dope. If you desire color, spray on a very light mixture of flat train paint and clear dope or clear lacquer. Mix approximately 50-50. Be careful here, and use pigmented finishes sparingly; this is where the weight can build up.

A technique that l have used for several years on tissue, silk span, and silk, either wet or dry, is to apply two coats of full strength dope to all framework where you want the covering to adhere, let it dry. Sand lightly, and then smooth on covering, using your dope brush to apply thinner to the paper. The thinner activates the dope under the covering instantly and dries very rapidly. Any blushing that occurs will be removed by the first coat of dope. If you get a wrinkle you can lift the paper by re-wetting the area with thinner..."

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Cessna AW (oz13670) by Jim Adams 1974 - model pic

  • (oz13670)
    Cessna AW
    by Jim Adams
    from Model Builder
    April 1974 
    48in span
    Scale Rubber F/F Cabin Civil
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 21/02/2022
    Filesize: 489KB
    Format: • PDFbitmap
    Credit*: dfritzke
    Downloads: 562

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    ScaleType: This (oz13670) is a scale plan. Where possible we link scale plans to Wikipedia, using a text string called ScaleType.

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