Sperry Monoplane
Quick Overview
BMJR-307Quick Overview
This model is intended for electric power, with full 4 channel control with a wing loading of about 7 oz / sq ft. Originally designed around an EPU-3 brushed motor (no longer available) we recommend the HC-2208 brushless (M-112) and 9 amp Speed Control (C-M-112). 3 micro servos (HS-55) are required.
Specifications
Wing Span: 30 in. Wing Area: 187 sq. in. Engine: Electric PowerDetails
In 1921 the Sperry Aircraft Company produced a thick cantilever monoplane wing which was specifically designed to be interchangeable between the U.S. Curtiss Jenny, and Canadian Curtiss Canuck, advancing these bi-planes to state-of-the-art monoplanes. The wing was internally braced, in one piece and completely free of external bracing wires. Construction used stout cross section spars giving the wing a safety factor of 15 before failure. The high efficiency of the wing and reduced drag over the wire braced biplane configuration, provided significantly improved performance.The BMJR kit was inspired by an FAC Peanut by Doc Martin flown at Palm Bay and a construction article by Dave Lindstrum published in the Sept. 1995 issue of Model builder Magazine.
Additional Information
SKU | BMJR-307 |
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