Hillman 20

Hillman Wizard 75 Hillman Twenty 70 Hillman Hawk Hillman Seven Seater Hillman 80
Hawk sports tourer body by Martin Walter manufactured 1936
Overview
Manufacturer	Hillman Motor Car Co Ltd
Production	*Wizard 65 & 75 approx 7000 *20/70: approx 4100 *7-seater: approx *Hawk: approx 5000 *80: approx 300
Model years	1931 to 1938
Body and chassis
Class	Executive car
Body style	Wizard 75, 20/70 and Hawk chassis only family saloon de luxe saloon 4-door sports saloon foursome drophead coupé 5-seater open tourer LWB 7-seater and 80 chassis only saloon limousine with division landaulette with division
Layout	FR
Powertrain
Engine	*Wizard 75, 20/70 and 7-seater 2,810 cc (171 cu in) *Hawk and 80: 3,181 cc (194.1 cu in)
Transmission	engine, single dry-plate clutch and 4-speed gearbox with central gear lever (all mounted as a unit); open propellor shaft with metal joints; half-floating spiral bevel driven rear axle with banjo case
Dimensions
Wheelbase	*Wizard 75 111 in (2,819 mm) track 56 in (1,422 mm) *20/70 108.5 in (2,756 mm) track 56 in (1,422 mm) *Hawk 108.5 in (2,756 mm) track F: 58 in (1,473 mm) R: 59.5 in (1,511 mm) *LWB Seven Seater and 80 126 in (3,200 mm) track *Seven seater 56 in (1,422 mm) *80 F: 58 in (1,473 mm) *80 R: 59.5 in (1,511 mm)
Length	*Wizard: 166 in (4,216 mm) grid up Twenty 70 176 in (4,470 mm)
Width	*Wizard: 64 in (1,626 mm)
Kerb weight	*Wizard chassis only: 19½ cwt, 2,184 lb (991 kg) *Wizard sports saloon: 30 cwt, 3,360 lb (1,520 kg) *Twenty 70 sports saloon 29½ cwt 3,304 lb (1,499 kg) *Hawk Wingham 33½ cwt 3,752 lb (1,702 kg)
Chronology
Predecessor	Hillman Vortic
Successor	Humber Snipe

The Hillman Wizard 75, Hillman Twenty 70, Hillman Hawk and their long wheelbase variants Hillman Seven Seater and Hillman 80 models were a series of 20 horsepower (RAC rating) medium priced 5-7 seater executive cars made by Hillman during the 1930s.

Built at a time when body and chassis were quite separate structures Hillman's 20 horsepower chassis was given three different body shapes in five years and a grand total of five different names if the long wheelbase cars are included. The same body shapes and chassis were used for Hillman's 16 horsepower offering though that smaller engine was not offered with their long wheelbase cars.

Towards the end of the 1930s the badges of the current models were changed by the Rootes brothers to Humber Snipe.

"The Hillman Wizard, The car for the roads of the world" was designed by the Rootes brothers to capture new export markets and to continue their Super Snipe's challenge to "the American type of car". They were freshly in control of Humber as well as Hillman and Britain exported comparatively few cars.

The new car was announced on the last Monday in April 1931, "a completely new Hillman". It was paired with a small bore 16 horsepower model of the same price intended for the UK domestic market where power was less important. This was the first six-cylinder Hillman, previously they had been four or eight cylinder cars. Special features included: pressed steel body, silent third gear (hitherto all intermediate gears emitted a loud whine) or "traffic-top", front and rear bumpers, chromium plating. The body incorporates draught-free ventilation utilising vents in the scuttle with the rear quarter-lights.

The six-cylinder engine's valves are "side by side" and operated by a gear-driven camshaft. Pistons have steel skirts and aluminium heads. The crankshaft has been given four bearings. Particular attention has been paid to carburation which was a weak point of the Hillman Straight Eight. The new system is simple but incorporates a hot-spot heated by the engine's exhaust.

The chassis frame has five cross members and the frame is deep and as rigid as possible. The front axle has an H section with rectangular ends for torsional stress. Duo-Servo 4-wheel brakes are Bendix design operating, after two primary rods, by enclosed cables on 11 in (279 mm) drums. The springing is half-elliptical on both axles and they are controlled by double-acting hydraulic shock absorbers. The rear under-hung springs are 50 in (1,270 mm) long. Steering is by a worm and nut design. The cars are supplied with artillery wheels and a fixed roof, wire wheels and a sunshine roof are optional extras.