PBY Catalina (oz11914)
About this Plan
Navy PBY Catalina. Control line scale model twin engined amphibian. For (2x) .049 engines. Scale is 1/36.
Quote: "IN the pages of aeronautical history, the Consolidated Vultee Catalina PBY will be recorded as one of the world's great aircraft. Although designed in 1933, Catalinas are still being used throughout the world.
The versatile, long-range flying boats were pressed into nearly every type of military service. Maximum speed of the PBY-5 is 195 mph and the average maximum cruising speed is 130 mph. Powered by 1,200 hp Pratt & Whitney engines, the Catalina has a cruising range of 3,000 miles. Wingspan is 104 ft, length is 63 ft 11 in, and height is 18 ft 11 in.
Some Catalinas were acquired after the war from surplus agencies for conversion into commercial passenger cargo aircraft. However, in order to obtain a very colorful replica, we selected the pre-war Catalina to be reproduced in model form. Mr Fred E Hamlin of Consolidated Vultee Aircraft supplied helpful photos and information for this project.
These planes were painted in many bright colors: silver, chrome, yellow, red, green, blue, white and black all on one airplane! When applied properly, these colors should attract any beauty-event judge.
The prototype was flown as both a landplane and seaplane very successfully. The model's tricycle landing gear is held in place with wood screws and is readily detachable. Note that a small balsa filler block is used in the bow to occupy the space normally closed by the nose wheel doors during seaplane operation. Most engines from .049 to .099 for landplane and .099 to .199 cu in displacement on water can be used.
It is suggested that the model be built as lightly as possible when powered with .049 engines (landplane flying). It takes a bit of experience to take off from water without sufficient power, so do not use the .049 for water flying. Although the wing tip floats on the full scale aircraft are retractable, we attached ours permanently in the lowered position. If you intend using your model as a landplane only, cement the float to the wing tip as the plans illustrate. These floats must be enlarged in seaplane flying, however, for water stability. Our model weighs 2-1/2 ounces and is 1/36th the size of the prototype.
Your 160-square-inch wing area Catalina will provide much land and sea flying enjoyment and will certainly be the star attraction at the local model port.
Cut the fuselage keel from 3/16 medium-soft sheet and be sure to cut out space for the bellcrank. The 3/32-in medium-sheet bulkheads are now cut out and cemented to the keel. Care should be taken to cut notches for the landing gear supports and 1/4-in square fairing strip before cementing the bulkheads in place. Cut the bellcrank support and cement firmly to the keel as shown. Now the elevator and stabilizer must be shaped and the elevator halves cemented to the dowel spar. Add the control horn and then hinge the elevator to the stabilizer with crinoline strips. When dry, the stabilizer is cemented to the keel and the control rod is bent to shape. Slide the control rod through the holes in the bulkheads and attach the ends to the horn and bellcrank. Solder a small brass washer to both ends of the control rod to prevent it from slipping of the horn or bellcrank. Before securing the bell-crank, attach the .015 lead-out lines to it. Either twist or solder the ends to prevent them from disengaging from the bellcrank. Using plenty of cement, attach the two hardwood main wheel foundations and the plywood nose wheel support firmly to the structure.
Fuselage-hull covering is next. It is advisable to complete the sheet bottom and top and then fill in the sides and miscel-laneous areas with planking strips. Select a medium soft straight-grained 1/16 x 3-in sheet and cement it to the very top of the fuselage. Bend it around the hull and hold it in place with straight pins forced into the bulkheads. This piece should extend from bulkheads B to G. Now cut two units of piece B-1 and cement to the hull bottom. This is followed by the forward portion of the hull bottom which is also sheet covered. It is suggested that this piece be cemented in place first and trimmed to shape when dry..."
Scan from dfritzke, cleanup by Circlip.
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