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 79
ted. You can readily tell when it issufficiently wound and the danger-point isreached, which comes when the pull of therubber grows too strong for your frame.The average motor should be turned aboutone hundred and fifty times. When thepropeller is released the rubber bands inunwinding will give you… … Model Constructed from Diagram, Plate A. BUILDING THE MOTOR raising your aeroplane, it is probably toosmall for the weight of the aeroplane.When fully wound up the propeller shouldrun for about ten seconds. On the otherhand, if the propeller be too large, it willquickly twist the aeroplane out of…
Airplanes
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