From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Specification sheet for a 4 Ton Federal Chassis 6-Cylinder Engine.
| Identifier | ExFiles\Box 158\3\ scan0017 | |
| Date | 31th October 1939 guessed | |
| 4 Ton Federal Chassis 6-Cyl. Engine. Model FF 415 F.{Mr Friese} WHEELBASE : 11' 3" 13' 11" 16' 2" CAB TO END OF FRAME : 8' 5" 11' 11" 15' 11" BODY LENGTH (Feet Inside) : 7½' to 8' 12' 16' LENGTH OVERALL : 17' 6¾" 21' 0¾" 25' 0¾" CHASSIS WEIGHT : Approx. 36 cwts. ENGINE : 6-cylinder “L” head, 3⅜” bore, 4¼” stroke. RATING : 27.34 h.p. MAXIMUM H.P. : 70. MAXIMUM TORQUE : 155 ft. lbs. at 1,000 r.p.m. SUSPENSION : 3-point. Rubber mountings, minimizing vibration. CRANKCASE and CYLINDER BLOCK : Cast integral. CYLINDER HEAD : High turbulence type combustion chamber. CRANKSHAFT : Seven bearings, 2½” diameter, drop forged heat treated alloy steel. Removable cadmium bearings. Total bearing area, 85 sq. ins. CONNECTING RODS : Drop forged alloy steel. Lower end bearing removable cadmium 2” diameter, 1½” long. PISTONS : Light weight cast iron. Four rings per piston. 3 compression, 1 oil. CAMSHAFT : Four bearings, 2-1/16” diameter. VALVES : Intake 1½” and exhaust 1⅜” port diameter. Special hard alloy valve seat inserts. TIMING DRIVE : Helical gears. LUBRICATION : Gear type oil pump provides pressure feed to all main and connecting rod bearings. Oil capacity—6 quarts. OIL FILTER : Mounted on side of cylinder block. COOLING : Four blade fan with automatic bearing lubrication. Shaft driven centrifugal water pump at side of cylinder block. IGNITION : Delco-Remy 6-volt battery type with full automatic distributor and induction coil. CARBURETTER : Zenith downdraft. Equipped with backfire flame arresting air cleaner with silencer. FUEL PUMP : A.C. Mechanical pump mounted on crankcase and driven by camshaft. Fuel filter unit with pump. DYNAMO : Delco-Remy 6-volt for starting and lighting. Cooled by auxiliary fan. STARTER MOTOR : Delco-Remy 6-volt with bendix drive. RADIATOR : Pressed steel shell. Fin and flat tube type. Detachable core, protected by steel grill. Water capacity of cooling system 25 quarts. FUEL SUPPLY : 15 gallon tank with baffle plates mounted on nearside of chassis frame. Pump feed. EXHAUST SYSTEM : Large exhaust pipe carries fumes to welded steel exhaust proof silencer. CLUTCH : Borg & Beck single dry plate type, 10” diameter, with vibration damper. Long life composition facing. Oil cup mounted on clutch housing lubricates clutch withdrawal bearing. Entire unit enclosed. | ||