TCDS E-218

Page No. 1 2 3 Rev. No. 12 12 12 FEDERAL AVIATION AGENCY E-218 Revision 12 WRIGHT Double Row Cyclone 739C18BA3 745C18BA3,4 749C18BD1,3 December 28, 1983 AIRCRAFT ENGINE SPECIFICATION Engines of models described herein conforming with this specification and approved data on file with the Federal Aviation Agency meet the minimum standards for use in certificated aircraft in accordance with pertinent aircraft specifications and applicable portions of the Civil Air Regulations provided they are installed, operated, and maintained as prescribed by the approved manufacturer's manuals and other approved instructions. Manufacturer Curtiss-Wright/Marquette, Inc. Fountain Inn, South Carolina Model Double Row Cyclone 739C18BA3 745C18BA3,4 749C18BD1,3 Type 18RA 16:7 reduction gearing - - - - Rating (with low impeller gear ratio) 6.06:1 6.46:1 - - Maximum continuous, hp, rpm, in.Hg., at: Critical altitude ((ft.) 2000-2400-41.0-4200 2000-2400-41.5-4800 2100-2600-41.5-6500 Sea level pressure altitude 2000-2400-42.0-S.L. 2000-2400-43.5-S.L. 2100-2600-43.0-S.L. or 2100-2400-42.5-4400 2100-2400-44.0-S.L. Takeoff (5 min.), hp, rpm, in.Hg., at: Critical altitude (ft.) 2200-2800-42.0-7000 2200-2800-44.0-6300 2500-2800-51.0-3100 Sea level pressure altitude 2200-2800-44.0-S.L. 2200-2800-46.0-S.L. 2500-2800-51.5-S.L. or 2200-2600-42.5-5200 or 2200-2600-44.5-4500 2200-2600-44.5-S.L. 2200-2600-46.5-S.L. Rating (with high impeller gear ratio) — 8.67:1 - - Maximum continuous, hp, rpm, in.Hg., at: Critical altitude (ft.) — 1800-2400-40.0-15000 1800-2400-42.5-9000 Low critical pressure altitude (ft.) — 1800-2400-43.0-8000 1800-2400-41.0-16000 Takeoff (5 min.), hp, rpm, in.Hg., at: Critical altitude (ft.) 1900-2600-42.0-16200 1900-2600-43.5-15700 Low critical pressure altitude (ft.) — 1900-2600-44.0-10600 1900-2600-44.0-10800 Fuel (minimum grade aviation gasoline) 100/130 - - - - Bore and stroke, in. 6.125 X 6.312 - - - - Displacement, cu. in. 3348 - - - - Compression ratio 6.5:1 - - - - Weight (dry), lbs. 2742 2780 3000 C.G. location (dry) From crankcase mounting pad counterbore, in. 14.4 - - — From thrust nut face, in. 28.1 - - — Above propeller shaft, in. 0.2 - - — Propeller shaft, SAE No. 60 - - - - Catrburetion or Fuel Injection Model Bendix-Stromberg Type - - - - 58-18-E1A direct fuel injection Ignition, dual Scintilla DF18LN-1 mag. - - Scintilla DLN-9 magneto (with secondary condenser removed) Timing, °BTC 28 - - 20 (30 in cruising) NOTES 1,2,3,4,5,11,12 1,2,3,4,5,10,11,12 1,2,3,7,9,12 "- -" indicates "same as preceding model." "—" indicates "does not apply." E-218 2 Certification basis Type Certificate No. 218 Production basis Production Certificate No. 8 NOTE 1: Maximum permissible temperatures are as follows: Head (well type thermocouple) Head (spark plug gasket thermocouple) Barrel Oil Inlet C18BA series 475°F (450°F for C18BA4) 500°F 325°F 220°F C18BD series (T.O.) 500°F — 350°F 220°F (MC) 475°F — NOTE 2. Fuel and oil pressure limits: Oil pressure - rear pump (psi) Min. Max. Idle C18BA series 50 70 15 C18BD series 60 70 15 Oil pressure - front pump (psi) C18BA series 30 55 15 C18BD series 35 45 15 Fuel pressure (psi) C18BA series 15 19 (20 22 with high press. spring in injector pump) C18BD series 19 21 (23 25 with high press. spring in injector pump) NOTE 3. The following accesssory drives are provided: 745C18B 745C18B 749C18B 739C18B Rotation Speed (X Maximum Torque (in.lb.) Maximum Overhang Moment A3,4 A3,4* D1,3 A3 ** Crankshaft) Cont. Static (in.-lb.) Starter X X X X C 1.000 — 36000 350 Fuel pump X X X X CC 1.000 25 450 15 Vacuum pump X X CC 1.400 525 2250 50 Vacuum pump - right hand X X C 1.400 525 2250 50 Hydraulic pump X X X X CC 1.400 525 2250 50 Generator & accessory gear left hand X X X X C 2.800 600 5100 350 Generator & accessory gear right hand X X C 2.800 600 5100 350 Generator & accessory gear right hand*** X X C 2.800 675 5100 350 Tachometer X X C .500 2 50 15 Tachometer X X CC .500 2 50 15 Tachometer X X C .500 22 50 15 Tachometer X X CC .500 22 50 15 Propeller governor X X X C 1.000 65 600 30 Propeller governor X CC .879 125 600 30 Spare hydraulic drive X X X X C 1.000 525 2250 50 Generator gear box**** X X C 1.485 1200 12000 252 *With "-A" after serial number **C-clockwise, CC-counterclockwise ***The right hand generator drive in the alternate configuration shall withstand a maximum continuous load of 60 hp at any engine speed between 1200 and 2000 rpm. Above 2000 rpm the drive shall withstand a maximum continuous torque load of 675 inch pounds. ****The generator gear box shall be mounted on the left-hand generator drive. The right-hand generator drive shall be supplied with a 16 tooth spline adapter. 3 E-218 NOTE 4. The C18BA engines incorporate a torquemeter, provisions for cylinder head or crankcase mounting, and single-acting hydraulic propeller provisions. NOTE 5. The 745C18BA engine may be converted to a modified single speed 739C18BA model in accordance with the manufacturer's Service Rework Bill of Materials No. 301A. Engines reworked in this manner are identified by Serial No. suffix "M." NOTE 6. The approval for models 739C18BA1, 2, 4 and 745C18BA1 and 2 for use in certificated aircraft expired June 1, 1947. NOTE 7. The C18BD engines incorporate a torquemeter, provisions for crankcase mounting, and double-acting hydraulic propeller provisions. NOTE 8. Deleted June 9, 1954. NOTE 9. The 749C18BD3 engine incorporates a viscous type vibration damper and is otherwise similar to model 749C18BD1. NOTE 10. Model 745C18BA4 is identical to Model 745C18BA3 except it incorporates forged head type cylinder assemblies. Ratings and limitations of these engines are the same except cylinder head temperature limits as listed in Note 1. NOTE 11. 739C18BA3, 745C18BA3 and 745C18BA4 model engines with "-A" after the serial number have 749C18BD1 or 749C18BD3 rear sections and corresponding accessory drive limitations. NOTE 12. The following spark plugs are approved on these engines: AC - 171, 181, 271, 273, 281. BG - RB19R-2, RB27R-1 Champion - C35S, RC35S, R37S-1, REA37N, REB37N, RHA37N, RHA37E, RHB37N, RHB37E, R115. .....END.....