Lockheed Sirius (oz933)

About this Plan

Lockheed Sirius. Control line scale model. Includes floats. Wingspan 32 in.

Update 22/5/2025: Replaced this plan with a clearer copy, scanned at 400 dpi from fullsize, thanks to dfritzke.

Quote: "Sirius. A 32 in wingspan control line model. Traced and corrected Oct 1982, by Dick Gleason."

Update 22/5/2025: Added article, thanks to Pit.

Quote: "Control line seaplane flying is a phase of this great hobby of ours that no modeller should neglect. Float equipped models can land on and take-off from grass and snow as well as water - however, the perfect arrangement would be interchangeable float and wheel gear. This model of the world famous Lockheed Sirius features this arrangement, floats or wheals can be installed in a matter of minutes.

Control line seaplanes present fewer problems than free flight craft. Landings especially are much more successful in view of the fact that you control the craft and can 'pull back' at the correct moment. Directional stability problems during take-off are eliminated in view of the circular fixed flight path. A brief outline of the full size craft's achieve meats seems to he in order before we clear the work table and begin construction.

Many flyers have established records in the Lockheed Siriusbut the plane flown by Colonel and Mrs. Charles A Lindbergh was selected to be reproduced in model form. A West to East trans-continental record was established on April 20th, 1930 by the Lindberghs flying from Glendale, California to New York City in 14 hours and 23 minutes. From July 30th to August 26th of 1931 a flight from North Haven, Maine to Tokyo, Japan was made, flying over Canada, Alaska and Siberia.

Construction begins by cutting the 1/8 in fuselage platform and cementing the engine mounts securely in place. Consult the construction steps for guidance in this operation. While this is drying cet the fuselage formers to shape and cement in place together with the bellcrank support. Cement the ribs No.X, cut from balsa, in place and set fuselage after tail block has been added.

The elevator and stabilizer are now cut to outline shape and sanded to a streamline cross section. Install the hinge and elevator spar and then cement the stabilizer securely to the fuselage platform. Bellcrank, control horn and control rod can be installed at this time. It is not advisable to use an electric ignition system on this model however if one is desired it should be installed at this time.

The entire fuselage, except the bottom in way of the wing, can now be planked with medium 3/32 x 3/8 balsa strips. Use plenty of cement in this operation..."

Supplementary file notes

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