Singer SM 4A Roadster
|1949 to 1955|
|Manufacturer||Singer Motor Company|
|Body and chassis|
|Body style||2-door convertible|
|Wheelbase||91 in (2,311 mm)|
|Length||151 in (3,835 mm)|
|Width||58 in (1,473 mm)|
|Height||58 in (1,473 mm)|
|Predecessor||Singer 9 sports|
The Roadster was updated to the 4A model in 1949 by fitting the four speed gearbox from the Singer Hunter. A Solex carburettor replaced the SU used on the previous car.
Home market cars were very rare.
All 4A roadsters were made with right hand drive . Production 4122 made
Singer 4AB and 4AC Roadster 1950-1952
The 4AB received a new chassis with independent front suspension by coil springs. The engine remained unchanged but the brakes became a mixed hydraulic/rod system.
The limited production 4AC used a slightly larger 1194 cc engine. there was 1000 approx made Engine 1074 or 1194 cc I4
Singer SM Roadster 4AD 1951-1955
The final version of the Roadster, the 4AD, was officially known as the Singer SM Roadster. It used the 48 bhp (36 kW), 1497 cc engine from the SM1500 saloon fitted to a virtually unchanged chassis and body although the brakes were changed from pure mechanical to a hydraulic/mechanical hybrid system. Power was increased to 58 bhp (43 kW) in 1953 by fitting twin carburettors to the engine.
Although early production was still all for export, from 1953 cars became available on the domestic market.
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 mpg-US) was recorded. No price was quoted for the car as it was for export only.
Engine 1497 cc 48 bhp I4 1497 cc 53 bhp I4
Singer SMX Roadster 1953
This experimental version had a glass fibre body. Probably around 10 were made.