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Cleveland Primary Product Line

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Why the variation in quality? Today, the quality of scale documentation is taken for granted. Nearly all historically-significant aircraft, particularly military aircraft, are well documented. In addition, many less-historically-significant aircraft are well documented. When some of the earlier subjects were prepared, adequate documentation was not available nor were actual aircraft available to measure and photograph. Such was the case with several World War I and World War II subjects. For some World War II subjects, official government censorship limited the availability of scale documentation and aircraft for measurement and photographic documentation. Primary Line Example Plan

Drawing Origins And Scales

Most Cleveland Model & Supply Company subjects were originally prepared in 1/16th scale, or 3/4 inch equals one foot, which was referred to in company literature as “Scale Flying” (abbreviated “SF”). Select, single-engine subjects and some larger, multi-engine subjects, were prepared in 1/24th scale, or 1/2 inch equals one foot, which was referred to in company literature as “Dwarf” (abbreviated “D”). The original scale of the drawing is noted on the title block. Material thicknesses called out on the plans were specific to the scale that the plan was prepared in. From these fundamental scales, the other scales (1/32, 1/24, 1/16, 1/12, 1/6, 1/8, 1/4) that the subjects are offered in are digital reductions or enlargements from the base scale.

Therefore, the material thicknesses specified on the reduced or enlarged-scale drawings are not necessarily relevant for that scale. Also, with a few exceptions, the models were designed as free-flight, rubber-powered models. Therefore, details concerning motor or engine selection, receiver and servo selection and placement, retractable landing gear detail, etc. are not shown. Builders may modify the model for electric or gas power, radio control, retractable landing gear, etc. Primary Line Example Plan