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Hans Grade Monoplanes
Does anyone happen to have any reference which would tell me the maximum duration of flight (or maximum distance covered on one fuel load) for any of the Hans Grade Monoplanes of 1909-1912? Alternatively, does anyone know the fuel capacity of these birds? The longest flight I can find recorded for him was 55 minutes, and with most of his birds having a maximum listed speed of 50-70 mph, that gives me a bottom-line estimate. On photos I have seen, the gas tank appears quite small (4-5 gallons?), so I expect that his maximum duration of flight could never have been as much as 2 hours, and probably was closer to one hour-- can anyone confirm that? Thanks. Doc
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