TCDS TC 126

MODELS: Wright Whirlwind R-760E-T 1.C. NUMBER: T.C. 126 Model - Whirlwind R-760E-1 Type - 7RA Direct drive Rating: Maximum continuous, br. Ipm, at s.L. fressure altitude 235-2000-S.L. Take-off (one minute). be, Ipm, at full thrcttle 235-2000 Fuel (minimum octane aviation gasoline) 73 Bore and stroke, in. 5.0 * 5.5 Cisplacement, cu. in. 756 Compression ratio 6-1:1 weight (dry) • 1b8- 540 ropeller shaft, SAE No. 20 or 30 (See NOTE 3) Carburetion Stromberg NA-RA carburetor with 2 in. venturi Ignition, dual Scintilla MN7-DF magnetos Ignition timing, degrees BTC Certification basis Type Certificate No. 126 Froduction basis The manufacturer does not hold a production certificate for the production of engines under this type certificate and, therefore, each engine so produced is subject to a detailed inspection for workmanshif and conformity with the approved data by a Civil Aeronautics Administration 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. OTE 1. Maximum permissible cylinder head, barrel, and oil inlet temperatures, 500 degrees Fa, 325 degrees F., and 200 degrees F., respectively. NOTE 2. pump and a starter. This model engine has provisions for mounting a hydraulically controllable two-position propeller, fuel NOIE 3. Engines with No. 20 spline propeller shaft incorporate a crankshaft torsional vibration damper.