Singer Roadster

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Singer Roadster
1947 Singer 9 Roadster.jpg
1947 Singer 9 Roadster
Overview
Manufacturer Singer Motors Limited [1]
Production1939–1955
12,700 approx produced out of which 63 coach built by James Young [2]
Assembly Coventry, England
Body and chassis
Body style 2-door convertible
Layout FR layout
Dimensions
Wheelbase 91 in (2,311 mm) [3]
Length151 in (3,835 mm) [3]
Width58 in (1,473 mm) [3]
Height58 in (1,473 mm) [3]
Chronology
Predecessor Singer Bantam tourer
Successornone

The Singer Roadster is a nine tax horsepower open 2/4-seater sports-tourer automobile manufactured by Singer from 1939 until 1955. It was launched in March 1939 as an open version of Singer's Bantam saloon and using many Bantam parts.

Contents

After less than six months production was suspended for the duration of World War II then restarted with the engine moved forward, more interior space and other minor modifications. The Roadster was upgraded to the 4A model in 1949 with a 4-speed manual gearbox. The short lived 4AB and 4AC models were released in 1950 followed by the 4AD SM Roadster in 1951. Singer Roadsters competed with the MG T series. The flowing lines of the car made it one of the most attractive roadsters in the market. The last cars were made in 1955. A few special Singer 4A car bodies were made by coach maker James Young.

Singer 9 Roadster 1939-1949

9 Roadster
1948 Singer 9 Roadster (Hudson).JPG
1948 Singer 9 Roadster
Overview
Production1939-1949
Powertrain
Engine 1074 cc I4
Transmission 3-speed manual
Chronology
Predecessor Singer Bantam tourer
SuccessorSinger 9 Roadster series 4A
see below
Engine

Roadster tune

Bantam Singer Nine
Overview
Manufacturer Singer Motors Limited
Layout
Configuration inline four [1] [4]
Displacement 1074 cc [1]
Cylinder bore 60 [4]
Piston stroke 95 [1]
Cylinder block materialiron, 2 main bearings [4]
Cylinder head materialdetachable [4] compression ratio 6.9:1 [1]
Valvetrain overhead camshaft and valves [4]
Combustion
Fuel systemdowndraught S.U. carburettor, [1] electric fuel pump on dashboard [4]
Oil system forced [4]
Cooling system natural circulation [4]
Output
Power output 36 @ 5,000 rpm [1] Tax 8.93HP [4]
Chronology
Predecessor Singer Nine
Successornone

The original Roadster was an occasional four-seat, two-door tourer, mostly based on the Bantam saloon with a cheery character. It had Singer's overhead camshaft, 1074 cc inline-four engine used in the Bantam range but tuned slightly to give 36 hp (27 kW) at 5000 rpm by fitting a high efficiency "hot-spot" manifold and downdraught SU carburettor, as well as having slightly higher compression. [5] For 1940 sliding glass panels replaced the celluloid in the sidescreens along with other equipment improvements. A chromed front bumper was now standard as were twin aero screens for use when the windscreen was folded flat to reduce frontal area. A fitted suitcase was supplied to take full advantage of the usable space in the luggage compartment. [5] Performance was handicapped by the use of the Bantam's three speed gearbox and top speed was in the order of 65 mph (105 km/h).

Advertising copy incorporated "from the inspiration of the Le Mans model" though the Singer sports-racing link remained deliberately muted after the death of 8 spectators in September 1936's RAC Tourist Trophy on Ireland's Ards Circuit, the Ulster TT. In that era the TT was a handicap and won by either MG or Riley. Unlike the Le Mans the Roadster was designed and built so it could be sold at a moderate price.

The makers claimed a top speed of 70 mph (110 km/h) and acceleration: 0 to 30 mph (48 km/h) in 6 seconds and 0 to 50 mph (80 km/h) in 18 seconds. Standard equipment included a spring steering wheel, concealed spare wheel, 12-volt electrical system and windscreen wipers. [6]

The body was built in the traditional method of aluminium panels fixed to a wooden framework. The suspension used leaf springs and was non independent with rigid axles front and rear. The brakes were mechanically operated.

The successful Roadster re-appeared following the war, in 1946, with these modifications: non-lubricated rubber shackle bushes, improved seating accommodation provided by moving the engine forward and an improved lid at the rear of the body providing a flat platform for luggage. [7] These changes seem to have improved the handling. [5] Better engine mounts and other isolations were introduced, providing a smoother ride and lessening maintenance. Cars began to filter out to the dealers in September 1946. [8] Nearly all post war production was exported the car being popular with the Elite in India and featured in the collections of a few Maharaja's.

Prewar
For 1946 the engine was moved forward leaving more passenger space Singer Nine Open Sports 1939.jpg
Prewar
For 1946 the engine was moved forward leaving more passenger space
Postwar Singer 9 Roadster (1948) (15476908230).jpg
Postwar

Singer 9 Roadster series 4A 1949-1950

9 Roadster
series 4A
Singer Nine Roadster 1950.jpg
9 Roadster series 4A 1950
Overview
Production1949-1950
4122 made [2]
Powertrain
Engine 1074 cc I4
Transmission 4-speed manual
Chronology
PredecessorSinger 9 Roadster
Successor
  • Singer 9 Roadster series 4AB
  • Singer 9 Roadster series 4AC
    see below

The Roadster was updated to the 1950 4A model in September 1949 by fitting the four speed gearbox from the Singer Hunter. A Solex carburettor replaced the SU used on the previous car, adding one extra horsepower. [9] The driving position was also improved, with easier entry and egress, and the Nine Roadster's awkward gearchange was ameliorated as the gearbox was moved back. [9] The bumpers on the 4A are slightly larger, stronger, and rounded towards the tips.

Singer 9 Roadster series 4AB and 4AC 1950-1953

9 Roadster
series 4AB and 4AC
1952 Singer 9 Roadster (7963752984).jpg
9 Roadster series 4AB
registered May 1952 1074 cc
Overview
ProductionOctober 1950-January 1953
1000 approx made [2]
Powertrain
Engine 1074 or 1194 cc SOHC I4
Transmission 4-speed manual
Chronology
PredecessorSinger 9 Roadster series 4A
Successornone. Singer SM Roadster
remained in production

By October 1950 the further improved 4AB Roadster appeared. While superficially similar, this has an independent front suspension by coil springs and a hybrid, "hydro-mechanical" brake system by Girling. Externally, there is a shortened bonnet and disc wheels, as well as fixed sides to the bonnet. The fenders were also redesigned, becoming curvier and deeper. [10] The steering box also received alterations, mainly aimed at centering it in the chassis so as to simplify manufacturing alternately right-hand or left-hand driven examples. The 4AB continued in production alongside the larger 4AD until January 1953.

The prototype 4AC (built in about a dozen examples) used a slightly larger 1194 cc engine. This was a down-sleeved version of the 1.5 litre version as fitted to the Singer SM1500, and part of an attempt rationalize Singer's lineup. [11]

registered January 1951 1074 cc Singer 4AB Roadster (1950) (15662490315).jpg
registered January 1951 1074 cc

Singer SM Roadster series 4AD 1½-litre 1951-1955

SM Roadster
series 4AD
Singer 1500 Roadster reg 1954 1497 cc.JPG
1954 Singer SM Roadster series 4AD
Overview
Also calledSinger SM 1500C (USA) [1] [12]
Production1951-1955
3440 made [13]
Powertrain
Engine 1497 cc 48 bhp I4 [14]
1497 cc 58 bhp I4 [14]
Transmission 4-speed manual
Chronology
PredecessorSinger 9 Roadster series 4A
Successornone

The final version of the Roadster, the 4AD, was officially known as the Singer SM Roadster. [15] First seen at the October 1951 Paris Motor Show it was initially intended for export only. [16] It used the 48 hp (36 kW), 1497 cc engine from the SM1500 saloon fitted to a virtually unchanged chassis and body, retaining the hydraulic/mechanical hybrid braking system. A 58 hp (43 kW) twin carburettor engine option was offered from 1953. [17] The 4AD can be told apart from a 4AB by its larger, rounder bumpers, as well as bigger taillights mounted on long stalks. [18]

Although early 4AD production was still all for export, with the smaller 4AB being regularly available in the United Kingdom, from 1953 1.5 litre cars became available on the domestic market as well. [19]

A car tested by The Motor magazine in 1951 had a top speed of 73 mph (117 km/h) and could accelerate from 0-60 mph (97 km/h) in 23.6 seconds. A fuel consumption of 25.8 miles per imperial gallon (10.9 L/100 km; 21.5 mpgUS) was recorded. No price was quoted for the car as it was for export only. [3]

1954 Singer SM Roadster series 4AD, showing the fixed bonnet sides with a divided central portion '54 Singer 4AD Roadster (Hudson).JPG
1954 Singer SM Roadster series 4AD, showing the fixed bonnet sides with a divided central portion
dashboard Singer SM Roadster Series 4AD 1953 dashboard (9041684954).jpg
dashboard

Singer SMX Roadster 1953

This experimental version had a glass fibre body. Displayed at the Earls Court Motor Show in October 1953 [20] probably around 10 were made.

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References

  1. 1 2 3 4 5 6 7 8 Kevin Atkinson, The Singer Story Veloce Publishing Dorchester 2007. ISBN   978-1-874105-52-7
  2. 1 2 3 Sedgwick, Michael (1993). A-Z of Cars 1945-1970. Devon, UK: Bay View Books. ISBN   1-870979-39-7.
  3. 1 2 3 4 5 "The Singer SM1500 Road Test". The Motor . 26 September 1951.
  4. 1 2 3 4 5 6 7 8 9 Cars Of To-Day. The Times, Friday, 21 February 1936; pg. 8; Issue 47304
  5. 1 2 3 "The Singer Nine Roadster". Profiles. North American Singer Owners Club. Retrieved 3 November 2014.
  6. Cars Of To-Day. The Times, Wednesday, 16 August 1939; pg. 8; Issue 48385
  7. Singer Car Models.The Times, Friday, 10 August 1945; pg. 7; Issue 50217
  8. Singer Motors Ltd. The Times, Saturday, 14 September 1946; pg. 2; Issue 50556
  9. 1 2 "The 4A Roadster". Profiles. North American Singer Owners Club. Retrieved 3 November 2014.
  10. "The 4AB Roadster". Profiles. North American Singer Owners Club. Retrieved 3 November 2014.
  11. "The 4AC Roadster". Profiles. North American Singer Owners Club. Retrieved 3 November 2014.
  12. 1953 Singer SM 1500C - 1497 c.c. Overhead Cam Engine ~ Rare Original Print Ad, www.ebay.ie, as archived at web.archive.org
  13. Robson, Graham (2000). A to Z of British Cars 1945-1980 . Devon, UK: Herridge. ISBN   0-9541063-9-3.
  14. 1 2 "Service Data No 215, Singer SM Roadster Series 4AD" (PDF). Motor Trader. Retrieved 23 June 2014.
  15. Hingston, Peter (2007). The Enthusiasts' Guide to Buying a Classic British Sports Car. Hingston Publishing Company. p. 184. ISBN   9780906555255 . Retrieved 23 June 2014.
  16. Gunnell, John (2004), Standard Guide to British Sports Cars, Iola, WI: Krause Publications, p. 174, ISBN   9780873497572
  17. Sedgwick, Michael; Gillies, Mark (1993). A-Z of Cars 1945-1973. p. 180.
  18. "The 4AD Roadster". Profiles. North American Singer Owners Club. Retrieved 3 November 2014.
  19. News in Brief. The Times, Thursday, 1 January 1953; pg. 4; Issue 52508.
  20. More New Models. The Times, Wednesday, 21 October 1953; pg. 4; Issue 52758.