The Rolls-Royce Silver Cloud was the core model of the
Rolls-Royce Motor Cars range from April 1955 until March 1966. It replaced the
Silver Dawn and was, in turn, replaced by the Silver Shadow. The J. P.
Blatchley design was a major change from the pre-war models and the highly
derivative Silver Dawn. As part of a range rationalisation the Bentley S1 is
very similar, apart from its radiator grille.
Silver Cloud I
The chassis was a simple steel box section, welded together
and very rigid. Construction retained the traditional split between chassis and
body, which facilitated the provision of special bodied versions though in
practice the overwhelming majority of cars were delivered with the standard
steel body shell, produced by Pressed Steel, and employing light weight
aluminium based alloy for the doors, bonnet/hood and boot/trunk lid. The car
was 5.38 m (212 in) long, 1.90 m (75 in) wide, and massed 1.95 tonnes. The
engine was a 155 hp / 4000 rpm 4.9 L six-cylinder unit with inlet over exhaust
valves: twin SU carburettors were added in September 1957. The standard
transmission was a four-speed automatic. The turning circle was 41 feet 8
inches (12.70 m).
Rolls-Royce Silver Cloud I Saloon (1957) |
Brakes were hydraulic and assisted by the Rolls-Royce
mechanical servo with 11 in (279 mm) drums and suspension was independent coils
at the front and semi-elliptic springs at the rear. Twin brake master cylinders
were incorporated from April 1956.
Power steering became an option in 1956 along with air
conditioning.
A long-wheelbase version, lengthened by 4 in (102 mm), was
also made available in September 1957, outwardly very similar to the existing
car, but offering improved leg space for rear-seat passengers.
The British Motor magazine tested a standard-wheelbase
factory-bodied Series I in 1956 recording a top speed of 102.9 mph (165.6 km/h)
and acceleration from 0-60 mph (97 km/h) in 13.5 seconds and a fuel consumption
of 14.5 miles per imperial gallon (19.5 L/100 km; 12.1 mpg-US). The test car
cost £5078 including taxes.
Silver Cloud II
The Silver Cloud II was introduced in 1959. Little changed
externally but it now had a 6.2 L V8 engine, which pushed the weight to 2.11
tonnes. Performance was greatly improved and top speed was raised to 183 km/h
(114 mph), but the main improvements were in acceleration and torque. Power
steering became standard. Electrically operated windows were now available as
an option.
Rolls-Royce Silver Cloud II Drophead Coupe (1962) |
Although the improved performance of the new car was
welcomed, commentators of the time noted that the V8-engined Silver Cloud II
was neither as quiet nor as smooth as the straight-six-cylinder-engined Silver
Cloud I, despite the new engine's hydraulic tappet operation. The new
wet-linered V8 was also a little cramped in an engine bay intended originally
for a narrower unit: in order to change the sparking plugs it was necessary to
remove the front wheel on the car's right side. There seems to have been a
problem with crankshaft breakages in the earlier V8s: this was blamed on lack
of lubrication to the bearings.
The basic architecture of the Silver Cloud II did not change
between 1959 and 1963, but there were numerous minor changes implemented,
notable among them a succession of improvements to the ventilation system.
Interior changes in 1961 included the adoption of blue instrument lighting, the
introduction of a combined indicator / headlamp flasher switch and of a
handbrake warning light. A remodelled rear light assembly was introduced in May
1962 and a change to single sealed-beam headlamps was made in August 1962.
The Motor magazine tested a Series II in 1960. They
recorded a top speed of 104.7 mph (168.5 km/h), acceleration from 0-60 mph (97
km/h) in 10.9 seconds and a fuel consumption of 13 miles per imperial gallon
(22 L/100 km; 11 mpg-US). The test car cost £6092 including taxes.
Silver Cloud III
The Silver Cloud III arrived in 1963. External dimensions
were slightly tweaked, the interior remodelled, the weight reduced by a little
over 100 kg (220 lb) and improvements made to the engine which included fitting
2-inch (51 mm) SU carburettors in place of the 1¾ inch units used on the Series
II Silver Cloud. The compression ratio was increased to 9:1, reflecting the
higher octane levels of premium fuel in major markets, although the option of a
lower 8:1 compression ratio was still offered in markets where non-availability
of higher octane fuels might be an issue. Rolls-Royce, as before, refused to
disclose overall engine power output, but indicated that there had been an
improvement of "perhaps 7%". Increased power and weight reduction
boosted speed and performance slightly. The engine now included a nitride
hardened crankshaft to reflect the extra power being generated and in response
to reports of broken crankshafts in the earlier V8 Silver Clouds. The
transmission was a GM Hydramatic which Rolls-Royce used under licence.
Rolls-Royce Silver Cloud III (1963) |
The headlights were grouped in a four-headlamp layout
subsequently continued in the later Silver Shadow. Other external changes
included a slightly increased slope of the hood / bonnet to correspond with a
11⁄2 inches (3.8 cm) reduction in the height of the radiator grille.
Between 1963 and 1966 there were no major changes. Stainless
steel wheel trims replaced chrome-plated ones in April 1963, and an improved
rear window demister was introduced in November of the same year. Wider front
seats were fitted in January 1964, and five months later a revised headlamp
surround now incorporated a very small RR monogram. A chrome badge reading
"Silver Cloud III" in an italic font can be seen on the right bottom
side of the boot of most UK and European delivered examples, whilst US versions
were delivered without this badge.
Rolls-Royce Silver Cloud III Continental Coupe (1965) |
As with earlier models, Rolls-Royce continued to make the
Silver Cloud chassis available to traditional coachbuilders. A notable version
is the so-called "Chinese Eye" design, offered in Fixed Head and Drop
Head Coupe style by Mulliner Park Ward. It was derived from the earlier H. J.
Mulliner & Co. design for the Bentley S1 and S2 Continentals. To widen
production in a diminishing market, this adaptation was made available for the
Bentley S3 Continental as well as for the Silver Cloud III so, of the 328
coach-built Silver Cloud III, about 100 were of this style.
Production | 1963-1966 |
---|---|
Body style | 4-door saloon variations provided by coachbuilders were: 2-door convertible 2-door coupé |
Engine | 6.2 L Rolls-Royce V8 220HP (estimate) |
Related | Bentley S3 |
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