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 the 1 1/2-2 Ton Federal Chassis with a 4-Cylinder Engine, Model FF 310 F.
| Identifier | ExFiles\Box 158\3\ scan0013 | |
| Date | 31th October 1939 guessed | |
| 1¹/₂-2 Ton Federal Chassis 4-Cyl. Engine. Model FF 310 F.{Mr Friese} WHEELBASE : 10' 8" | 12' 8" CAB TO END OF FRAME : 8' 5" | 9' 11" BODY LENGTH (Feet Inside) : 7¼' to 8' to 8¼' | 10' LENGTH OVERALL : 17' 1¼" | 18' 7¼" CHASSIS WEIGHT : Approx. 28 cwts. ENGINE : 4-cylinder “L” head, 3¾” bore, 4½” stroke. RATING : 22.5 h.p. MAXIMUM H.P. : 50. MAXIMUM TORQUE : 127 ft. lbs. at 1,000 r.p.m. SUSPENSION : 4-point. Rubber mountings, minimizing vibration. CRANKCASE and CYLINDER BLOCK : Cast integral. CYLINDER HEAD : High turbulence type combustion chamber. CRANKSHAFT : Three bearings, 2” diameter, drop forged heat treated alloy steel. Total bearing area, 44.4 sq. ins. Projected bearing area 14.13 sq. ins. CONNECTING RODS : Drop forged alloy steel. Lower end bearing 2” diameter, 1½” long, cast into place. PISTONS : Light weight cast iron. Three rings per piston. CAMSHAFT : Drop forged alloy steel. Four bearings, 1¹/₈” diameter. VALVES : Inlet 1½” and exhaust 1⅜” port diameter. Special hard alloy valve seat inserts. TIMING DRIVE : Helical gears, ⅞” face. LUBRICATION : Gear type oil pump provides pressure feed to all main and connecting rod bearings. Oil capacity—4 quarts. COOLING : Four blade fan, 18” diameter, 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 : British made Zenith downdraft. 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 18 quarts. FUEL SUPPLY : 15 gallon tank with baffle plates mounted in frame under driver’s seat. 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. | ||