Cloud Chaser. Rubber sport model. Twin pusher design.
Quote: "Cloud Chaser. A 1931 twin pusher design by Joseph S Ott. Drawn for the NFSS by Don Farnsworth."
Quote: "Chapter XXXIII. Cloud Chaser. Outdoor Twin Pusher- Duration.
For duration contests out of doors, the Twin Pusher is used most extensively. In fact, when outdoor contests are an-nounced, it is usually assumed that a Twin Pusher will be used, unless otherwise specified, such as fuselage types, scale models, etc. All outdoor duration records are held by this type of model.
Various kinds of designs have been used at different contests, and the models have been built extremely light, to such an extent that it becomes a matter more or less of luck when flying this type. In other words, any boy with a fair amount of model experience can build a good Twin Pusher of a specified weight. The arrangement of the propellers and rubber bands may be approximately the same on ten different models. The weights may be the same with slight variations in wing curves and wing areas. Of course, good workmanship and good model engineering go together for successful flying, but it has very often happened, and it probably will in the future, that in some cases the poorest models have flown the best. This may be considered due to various things, the condition of the air, the time of day the model is flown, and if the model gets a good start and rises steadily.
As a general rule, however, the best model builders that apply all the theories in the most efficient form, usually turn out the record breaking models. Luck always enters into it, but it may be considered the exception rather than the rule. It is mentioned here because it takes place now and then, and to understand the conditions as they might occur, is to one's advantage so that all precautions might be taken into consideration..."
Scan from DBHL, cleanup by theshadow.
Direct submission to Outerzone.
Update 07/08/2018: added chapter about the Cloud Chaser from Joe Ott's 1932 book, 'Model Airplanes: Building & Flying', thanks to Pit.
Chapter from 'Model Airplanes: Building & Flying'.
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