TCDS TC 155

WRIGHT AERONATICAL DIVISION CURTISS-WRIGHT CORPORATION MODELS: Wright Whirlwind R-760E-2 T.C. NUMBER: T.C. 155 Model - Whirlwind R-760E-2 Type - 7RA Direct drive Rating: Maximum continuous, hp, rpm, at S.L. pressure altitude 320-2200-S.L. Take-off hp, rpm, at full throttle 350-2400 Fuel (minimum octane aviation gasoline) 80 Bore and stroke, in. 5.0 x 5.5 Displacement, cu. in. 756 Compression ratio 6.3: 1 Weight (dry), lbs. 570 includes carburetor air heater and cleaner and cylinder barrel and head baffles Propeller shaft, SAE No. 20 Supercharging (impeller gear ratio) 9.17: 1 Carburetion Stromberg NA-R7A carburetor with 2-1/4 in. venturi Ignition, dual Scintilla MN-7-DF, SF-7R or VAG-7DF magnetos Certification basis Type Certificate No. 156 Production basis None. The manufacturer does not hold a production certificate for the production of engines under this type certificate and, therefore, each engine so produces is subject to a detailed inspection for workmanship and conformity with the approved data by a civil Aeronautics Administrator Agent. In addition, the engine must have a satisfactory run-in including 5 hours at rated power and speed. Upon satisfactory completion of the above, the agent will tag the engine with Tag Form ACA 186. NOTE 1. Maximum permissible cylinder head, barrel and oil inlet temperatures, 500 degrees F., 325 degrees F., and 200 degrees F., respectively.