The boys' book of model aeroplanes : how to build and fly them : with the story of the evolution of the flying machine (1912)
Collins, Francis A. (Francis Arnold), b. 1873-, Morgan, Kewpie, inscriber. DSI · London : Eveleigh Nash · leaf 72
t is advisablethat every boy should work out this prob-lem for himself. An effective motor iseasy to build, and costs practically noth-ing. The length of your propeller-bladesshould be equal to about one third thewidth of your largest plane. For this you50 BUILDING THE MOTOR will need six strips of… … THE PROPELLER BEFORE CUTTING DOWN.Plate B. The strips should be covered with a thinglue and laid one on top of another, anda very thin nail be carefully driventhrough the little pile at the exact centerbetween the two ends. While the glue isstill soft, turn the sticks on the axis formedby the nail,…
Airplanes
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