Bellanca Columbia (oz13204)

 

Bellanca Columbia (oz13204) by Dave Haught 1990 - plan thumbnail

About this Plan

Bellanca Columbia. Radio control scale model.

Quote: "After studying my old blueprints, I decided to build the Columbia to Schoolyard Scale proportions. Using the size and area of the Cessna C-37 as a starting point, with the help of a calculator I worked out the numbers for the scale presented in this article. The wealth of markings and details guaranteed a good-looking and somewhat unusual model. And with any luck, it would fly RC. If not, at least I'd have an attractive new Free Flight ship for the flying field.

Construction: As with all building projects, time is well spent studying the accompanying plans and pictures. The Columbia is a very simple model with only a few new twists.

The fuselage: This is basically of old-fashioned stick-and-tissue construction, with the addition of a few formers at the nose to produce the rounded cowl section. Begin by cutting out the cabin top sides from medium-to-hard Y16 balsa sheet. Match up the sides, and carefully locate and drill the holes for the wing wires and rubberbands.

Pin the sides to the plans, and pin down the upper and lower longerons. Pin down the short strip under the cabin windows, and then the remaining uprights. If you did a good job of fitting these pieces, glue them in with CyA (cyanoacrylate) and allow to cure.

Once the first side is finished, cover it with a sheet of wax paper and build the second side over it. Make sure the wing wire holes line up before you start gluing; the sides must match up to ensure proper alignment later.

After the glue has set, lift the sides from the plans and join them with the crossmembers. Begin by beveling and applying CyA to the tail posts. Draw the sides together, CyA the crossmember at station D, then pull the nose together and add all the remaining crossmembers. Check as you proceed to make sure that the fuselage is square and evenly tapering when viewed from the top.

Cut out and install the formers at section B. Cut out and install the firewall. Bend the landing gear wires, and sew them to the proper crossmembers. Gather these units at the axle, bind them with fine copper wire, and solder them together. Don't forget to sew in the wing strut joiners with the landing gear struts. Cut a pile of gussets, and install them wherever you think they'll help. Plank the nose, extending the 1/32 sheet from the firewall to the front landing gear strut and then to the top, sides, and bottom. l found that soaking the outside of the sheeting with hot water in a spray bottle helped curve the sheet around the corners.

Add the 1/16 sheet for the rear windows, pushrods, and stabilizer mounts. The cowl may be formed either from four trapezoid-shaped sheets of 1/2-in balsa with triangle blocks in the corners, or from a single block of balsa. Carve and fit the cowl: Tack glue it to the firewall with model cement, and have at it. When the shape is approximately right, pop the cowl off and hollow it to clear the engine..."

Bellanca Columbia, Model Aviation, March 1990.

Direct submission to Outerzone.

Supplementary file notes

Article pages, thanks to RFJ.

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Bellanca Columbia (oz13204) by Dave Haught 1990 - model pic

Datafile:
  • (oz13204)
    Bellanca Columbia
    by Dave Haught
    from Model Aviation
    March 1990 
    40in span
    Scale IC R/C Cabin Civil
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 05/04/2021
    Filesize: 936KB
    Format: • PDFbitmap
    Credit*: Circlip, RFJ
    Downloads: 609

ScaleType:
  • Wright-Bellanca_WB-2 | help
    see Wikipedia | search Outerzone
    ------------
    Test link:
    search RCLibrary 3views (opens in new window)


    ScaleType: This (oz13204) is a scale plan. Where possible we link scale plans to Wikipedia, using a text string called ScaleType.

    If we got this right, you now have a couple of direct links (above) to 1. see the Wikipedia page, and 2. search Oz for more plans of this type. If we didn't, then see below.


    Notes:
    ScaleType is formed from the last part of the Wikipedia page address, which here is https://en.wikipedia.org/wiki/Wright-Bellanca_WB-2
    Wikipedia page addresses may well change over time.
    For more obscure types, there currently will be no Wiki page found. We tag these cases as ScaleType = NotFound. These will change over time.
    Corrections? Use the correction form to tell us the new/better ScaleType link we should be using. Thanks.

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  • Plan File Filesize: 936KB Filename: Bellanca_Columbia_oz13204.pdf
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Notes

* Credit field

The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.

Scaling

This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.

 

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