O.S. GT15 Gasoline Engine Test Flight| Hangar 9 Ultra Stick 10cc High Speed Flying
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O.S. GT15 test at H9 ultra stick 10cc, use aerostar 14x6 propeller with 9800 rpm n idle at 2400 rpm, gasoline to oil ratio 25:1. Another video • Hangar 9 Ultra Stick 10cc Power by O...