TCDS TC 194

FRANKLIN ENGINE COMPANY MODELS: Aircooled Motors Franklin 4AC-150 Series 40, 50 and A T.C. NUMBER: ATC 194 Models - Franklin 4AC-150 Series 40 Series 50 Series A Type 4HOA - - - - - - - - Rating: Maximum continuous, hp, rpm, at S.L. press. alt. 40-1875-S.L. 50-2300-S.L. 60-2400-S.L. Take-off, hp, rpm, full throttle 40-1875 50-2300 60-2400 Fuel (minimum octane aviation gasoline) 70 - - - - - - - - Bore and stroke, in. 3.625 x 3.625 - - - - - - - - Displacement, cu. in. 150 - - - - - - - - Compression ratio 6.6: 1 - - - - - - - - Weight (dry), lbs. 158 single, with Wico or Eisemann magneto; 151 single, with Bendix magneto 158 single, 166 dual with Wico or Eisemann magnetos; 161 single, 172 dual with Bendix magnetos 158 single, 166 dual with Eisemann magnetos 160 single, 172 dual with Bendix magnetos Propeller shaft Special with integral hub - - - - - - - - Carburetion Single, Bendix-Scintilla SF-4R-1, SF-4R-9, SF-4L-1, SF-4L-9, Wico A8-9B3, or Eisemann magnetos Single and dual - Bendix-Scintilla SF- 4R-1, SF-4R-9, SF- 4L-1, SF-4L-9, Wico AP-958, or Eisemann magnetos Single and dual, Bendix Scintilla SF-4R-1, SF- 4R-9, SF-4L-1, SF- 4L-9, or Eisemann magnetos Ignition Stromberg NA-S2 carburetor with 1-1/16 in. venturi Stromberg NA-S2 carburetor with 1-1/8 in. venturi or Marvel MA-3-F carburetor with 1-9/64 in. main venturi and 11/16 in. primary venturi Stromberg NA-S3 carburetor with 1-1/4 in. venturi or Marvel MA-3-F carburetor with 1-7/32 in. main venturi and 11/16 in. primary venturi Ignition timing, deg. BTC Single 30 Single 30, Dual 25 and 26 Single 30, Dual 24 and 26 Spark plugs Champion AJ-66, C- 108, Simmonds Benton 4DS-8 - - - - - - - - Certification basis Approved Type Certificate No. 194 (Expired 7/11/41) - - - - NOTE 1. Maximum permissible cylinder head, cylinder barrel, and oil inlet temperature, 500 degrees F., 300 degrees F., and 220 degrees F., respectively. NOTE 2. All models eligible incorporating Fram Type P-1/2 oil filter.