Sunbeam Rapier Features, Photos and Videos

The Sunbeam Rapier is an automobile produced by Rootes Group from 1955 to 1976, in two different body-styles, the "Series" cars (which underwent several revisions) and the later (1967–76) fastback shape, part of the "Arrow" range.

The first generation Rapier was the first of the "Audax" range of light cars produced by the Rootes Group, in this instance as part of their Sunbeam marque. Announced at the London Motor Show in October 1955, it preceded its Hillman Minx and Singer Gazelle counterparts which were not introduced until 1956.

A four-seat, two door hardtop coupé – designated Series I with the introduction of the Series II in 1958 – it was different from the Sunbeam Mark III, the car it would eventually replace. Although designed "in house" by the Rootes Group, it was inspired, via the Raymond Loewy design organisation, by the new-generation Studebaker coupés of 1953.

The styling of the Series I Rapier was undertaken by the design firm of Raymond Loewy Associates and showed a great deal of influence of Raymond Loewy's 1953 Studebaker Hawk (itself an acclaimed design). Announced in October 1955 for the Motor Show and available in a range of two-tone colour schemes typical of the period, it had a steering column gear change, leather trim and a Laycock de Normanville overdrive as standard fittings. Vinyl trim was an option in the UK and standard in certain export territories. Rapier bodies were built by Pressed Steel, shipped to Thrupp and Maberly in north London where they were painted and trimmed, then shipped again to the Rootes assembly plant at Ryton-on-Dunsmore near Coventry where the engines, transmission and running gear were fitted. This complex situation persisted until late 1963 when the Series IV was introduced.

The Rapier's 1,390 cc (85 cu in) engine was essentially the same as that fitted to the Hillman Minx but with a raised compression ratio (8:1 instead of 7:1), a Zenith DIF 36 carburettor and revised inlet and exhaust manifolds. In this form it developed 62.5 bhp (47 kW; 63 PS) at 5000 rpm. A column change, four speed transmission with overdrive on third and top was included in the price as a standard feature.

From October 1956, directly as a result of experience gained in international rallying by Rootes' competition department, the Rapier was fitted with the updated R67 engine on which the Stromberg carburettor was replaced by twin Zenith 36 WIP carburettors on a new inlet manifold. This engine produced 67.5 bhp (50 kW; 68 PS) at 5000 rpm, the effect of which was to reduce the Rapier's 0-60 mph time by almost 1 second and increase its top speed by 3 mph (4.8 km/h).

British magazine The Motor tested a Series I twin carburettor saloon in 1957, recording a top speed of 85.7 mph (137.9 km/h) and acceleration from 0–60 mph (97 km/h) in 20.9 seconds and a fuel consumption of 30.5 miles per imperial gallon (9.3 L/100 km; 25.4 mpg‑US). The test car cost £1043 including taxes of £348.

In competition, a Rapier driven by Peter Harper finished in fifth place in the 1958 Monte Carlo Rally.

In total, 7,477 units were produced of this initial version of the Sunbeam Rapier. It was discontinued in 1958 on the introduction of the Series II.

The Sunbeam Rapier Series II was announced on 6 February 1958, available in hardtop and convertible forms. Rootes arranged for nine of the new cars to be in Monte Carlo for the press to try at the end of the 1958 Monte Carlo Rally.

The traditional Sunbeam radiator grille was reintroduced, albeit shortened and widened and the spaces at its sides were filled with horizontal side grilles. The two-tone lower body colour scheme of the Series I was discontinued in favour of a broad full length flash in the same colour as the roof, but the most obvious change was the appearance on the rear wings of pronounced fins.

The interior of the Series II was little changed from that of the Series I, except that a floor gear change replaced the column change, a modification, developed on the works Series I rally cars. To keep costs down, the leather upholstery, standard on the Series I, was discontinued in favour of vinyl and overdrive became an extra cost option.

An improvement in the Series II though, was its more powerful engine. Referred to as the Rallymaster, it had an increased capacity of 1,494 cc (91.2 cu in). The capacity increase combined with a higher compression ratio of 8.5:1 and larger inlet and exhaust valves to raise the power output to 73 bhp (54 kW; 74 PS) at 5,200 rpm. Autocar quoted the top speed as 91 mph (146 km/h) with a 0-60 mph (97 km/h) time of 20.2 seconds. Also as a direct result of competition experience, the Series II was fitted with larger front brakes and a recirculating ball steering box instead of the worm and nut box of the Series I.

The Series II was discontinued in favour of the Series III in 1959 after 15,151 units (hardtop and convertible) had been built.

The Series III was introduced in September 1959.

Rootes made subtle changes to the car's body which individually were insignificant but when combined, considerably altered its appearance. For example, the number of horizontal bars in each of the side grilles was increased from three to four and the boot lid acquired an oblong number plate recess and surround in place of the square one of the earlier cars. The most striking change was the redesigned side flash, now narrower and lower down the side of the car with the Rapier script on its rear end. The most subtle change, however, was a reduction in thickness of the windscreen pillars and a lowering of the scuttle line to give a 20% increase in windscreen area.

Inside the Series III the changes were more evident. Rootes stylists completely redesigned the seats and interior panels and specified that they be trimmed in single colour vinyl with contrasting piping. For the first time, deep pile carpets were fitted as standard in the foot-wells (previous versions had rubber mats). The steering wheel, control knobs and switches were in black plastic instead of beige. The dashboard, instead of being, as in the earlier cars, padded metal and plastic, was covered in burr walnut veneer surmounted by a padded crash roll fitted with black-faced British Jaeger instruments.

Mechanically, the Series III benefited from the design of the Sunbeam Alpine sports car with which it shared its engine. Although the engine's displacement was still 1,494 cc (91.2 cu in), it was fitted with a new eight-port aluminium cylinder head with an increased compression ratio and redesigned valves, and used a new, sportier camshaft. The twin Zenith carburettors from the Series II remained but were mounted on a new water heated inlet manifold. The result of these changes was a power increase of 5 bhp (4 kW; 5 PS) to 78 bhp (58 kW; 79 PS) at 5400 rpm.

Gearbox changes included higher second, third and top gear ratios, and a reduced angle of gear lever movement to make for shorter lever travel and snappier changes. New front disc brakes significantly improved the Rapier's braking capability and widened its front track to give greater stability and improved road-holding.

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