| Alvis 10/30 | |
| Manufacturer: | Alvis |
| Production: | 1920-1922 770 made [1] |
| Wheelbase: | 1100NaN0 (SA) or 1120NaN0[2] |
| Length: | 1530NaN0 to 1580NaN0 |
| Engine: | 1460 cc Straight-4 |
The Alvis 10/30 is a car introduced by British car maker Alvis Car and Engineering Company Ltd in 1920. It was the company's first production vehicle and was made until 1923. A range of body styles was available.
The car is powered by a water cooled, four cylinder 1460 cc four cylinder engine usually of the side valve type but some had overhead valves. The engine had a bore of 68mm and a stroke of 100mm.[2] A Solex carburettor was used. This drove the rear wheels via a cone clutch and four speed gearbox. The chassis had rigid axles and half elliptic springs.[2]
On the home market the car cost £450 in chassis form up to £470 with factory body.
A top speed of 60mph was claimed with the overhead valve Super Sports derivative said to be able to lap the Brooklands race track at 80mph.
In 1921 the car could be ordered with a larger 1598cc engine as the Alvis 11/40. The extra capacity was obtained by lengthening the stroke to 110mm. It was claimed to be able to reach 70mph.
54 were made.
In 1922 the 11/40 was replaced by the 12/40 with the same engine but improved gearbox and rear axle. For the 1924 model year the 12/40 was designated 'TC', and for 1925 'TD'. The TD 12/40 was available with four-wheel brakes as an optional extra.
In 1923 the chassis cost £470 reducing to £375 in 1925.
It continued in production until Autumn 1925 by which time 1887 had been made.