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).
Sales and specification sheet for the Morris 'Commodore' and 'Navigator' marine engines.
Identifier | ExFiles\Box 133\3\ scan0027 | |
Date | 8th February 1939 guessed | |
MORRIS "COMMODORE" MARK II (Petrol) 6-cyl. 20/40 h.p. MARINE ENGINE £136 10s. With full Electrical Equipment TYPE. Six-cylinder, four-cycle, side valve with detachable head. Rotation anti-clockwise (viewed from aft) to suit left-hand propeller on non-reducing engines and reducing engines with chain type reducing gear, and right-hand propellers for reducing engines with gear type reducing gear. Maximum installation angle 10°. SIZE. 75 mm. bore, 110 mm. stroke, 2916 c.c. capacity, 2.953 in. bore, 4.33 in. stroke, 177.95 cu. in. SPEED RANGE. From 300 r.p.m., the idling speed, to 2000 r.p.m. WEIGHT. Engine, reverse gear and electrical equipment without battery 877 lb. Battery, 75 lb. COOLING. By gear pump driven from camshaft, through water jacket of exhaust manifold, thence to special diffuser pipe in cylinder block and out through the head. Discharge by three-way cock, either directly overboard or through exhaust. LUBRICATION. Force feed by gear pump to main, big-end, and camshaft bearings. Pistons are splash lubricated. IGNITION. By marine type magneto, with impulse starting device, mounted on the end of the dynamo and driven by it. The leads are enclosed in a vulcanite tube and the sparking plugs have waterproof terminals. LIGHTING. By Lucas dynamo, Type CSA, and Lucas battery, Type STWT1A, 12-volt 63 amp. hours capacity. STARTING. By Lucas motor, Type M45AL—3, geared to drive toothed periphery of flywheel. To avoid the use of long cables carrying the heavy starting current, a solenoid starter switch is provided, enabling the connection to the push button switch on the instrument board to be made with comparatively light gauge wire. REVERSE GEAR. The "one-lever" reverse gear is of the planetary type. The gear is self-locking ahead and astern. PROPELLER THRUST. This is taken by a large ball bearing at the rear of the reverse gear case. No longitudinal movement of the propeller shaft takes place. REDUCING GEAR (2 to 1). This can be supplied as a separate unit, either of the roller chain type giving anti-clockwise rotation of propeller (looking from aft), or of the double-helical spur gear type, giving clockwise rotation of propeller, and is practically noiseless in operation. This enables handed propellers to be employed in conjunction with reducing engines. The centre distance between crank and tail-shaft is 5 1/8 in. in both cases, and the design of the case is such that it can be secured in various positions around the crankshaft centre. The case is of cast iron, heavily ribbed. Ball bearings carry both the journal loads and the propeller thrust ahead and astern. COUPLING. A complete flange coupling is supplied. See installation list for shaft sizes. PRICE (Non-Electric Model) . . . . . . £126 PRICE with Chain or Gear Type Reducing Gear and full Electrical Equipment . . . . . . £155 PRICE with Chain or Gear Type Reducing Gear, Non-Electric Model . . . . . . £144 10s. MORRIS (PARAFFIN) "COMMODORE" (Mark II) 18/32 h.p. A 6-cylinder engine possessing all the excellent features of the petrol model "Commodore" and the same generous specification. The carburetter fitted is a well-tried bi-fuel instrument, working in conjunction with a specially developed vaporising manifold free from moving parts and completely reliable. PRICE with full Electrical Equipment . . . £144 10s. PRICE (Non-electrical) . . . . . . £134 Chain or Gear Type Reducing Gear . . . . . . £18 10s. THE DESIGN OF THE PARAFFIN "COMMODORE" (Mark II) HAS BEEN PASSED BY THE B.O.T. 2 MORRIS "NAVIGATOR" 4-cyl. 11/18 h.p. MARINE ENGINE (Petrol) £94 10s. With full Electrical Equipment TYPE. Four-cylinder, four-cycle, detachable "L" head. Rotation to suit left-hand propeller both with and without reducing gear. Suitable for installation up to 10°. SIZE. 75 mm. bore, 102 mm. stroke, 1802 c.c. capacity, 2.95 in. bore, 4 in. stroke, 110 cu. in. capacity. SPEED RANGE. From 300 to 2000 r.p.m. Engines can be supplied to run economically from 750 r.p.m. upwards. WEIGHT. Engine, reverse gear and electrical equipment without battery, 555 lb. Battery, 75 lb. COOLING. The water is circulated by gear pump driven from camshaft. It passes around exhaust pipe, thence to cylinder block and out through the head, which is provided with a three-way cock. LUBRICATION. Oil is circulated by a plunger pump driven from the camshaft. The crank bearings and reverse gear are pressure fed, splash providing lubricant for big-ends and pistons. IGNITION. A waterproof marine type magneto, specially designed for this unit, is mounted in an easily accessible position. The leads are enclosed in vulcanite tube and the sparking plugs have waterproof protectors. LIGHTING AND STARTING. A silent starting gear (Patent No. 172167) is used in conjunction with a dynamotor which provides both power and light. The battery, of 63 ampère hours capacity is ample for lighting cabin cruisers. A 12-volt system is used. REVERSE GEAR. The "one-lever" reverse gear is of the planetary type. The "ahead" clutch is of alternate steel and bronze plates. The reverse is operated by a contracting band. The unit runs in oil supplied via the motor. The gear is self-locking both ahead and astern. PROPELLER THRUST. This is taken by a large ball bearing at the rear of the reverse gear case. No longitudinal movement of the propeller shaft takes place. REDUCING GEAR (2 to 1). This bolts on to the rear of the reverse gear case. The centre distance between crank and tail shaft is only 1 1/2 inches. The case is secured by eight bolts, and can therefore be fixed in any one of eight equally spaced positions around the crankshaft centre, at intervals of 45°. The case is of cast iron, heavily ribbed. Ball bearings carry both the gear loads and the propeller thrust ahead and astern. COUPLING. A complete flange coupling is supplied. See installation list for shaft sizes. PRICE with Reducing Gear and Electrical Equipment . . . £107 5s. PRICE without Electrical Equipment . . . £84 PRICE with Chain or Gear Type Reducing Gear, Non-Electric Model . . . £96 15s. (Forward auxiliary drive, £3 5s. extra.) MORRIS (PARAFFIN) "NAVIGATOR" A 4-cylinder developing 11 h.p. at 1000 r.p.m. and 18 h.p. at 2000 r.p.m. The vaporiser is noticeably simple and efficient, there being no moving part. Dual action carburetter is fitted, the change-over to paraffin being by two-way cock. Essentially an economy engine, quiet and smooth in running and capable of sustained hard work. PRICE with full Electrical Equipment . . . £97 5s. PRICE (Non-electrical) . . . . . . £86 15s. Chain or Gear Type Reducing Gear . . . . . . £12 15s. PARAFFIN "NAVIGATOR" ENGINES CAN BE BUILT UNDER BOARD OF TRADE SURVEY AT AN EXTRA CHARGE OF £8 15s. 3 | ||