Bantam Roadster: American Austin engineering with a new face

BANTAM

1938 American Bantam Roadster
1938 American Bantam Roadster. Photo by Damian B Oh, CC BY-SA 4.0 via Wikimedia Commons.

The Bantam Roadster was the open model in the range that American Bantam launched in 1937. It was a small, inexpensive car built on the tooling the company had bought from the bankrupt American Austin Car Company, with new styling by Count Alexis de Sakhnoffsky and a reworked 747 cc engine.

Bantam Roadster at a glance

Bantam Roadster key facts
Maker American Bantam Car Company, Butler, Pennsylvania
Model years from 1937; company car production ended 18 August 1943
Basis American Austin tooling bought in 1935
Designer Count Alexis de Sakhnoffsky
New for 1937 front grille, front fenders and rear fenders
Engine 747 cc (45.6 cu in) four-cylinder
Power 20 hp at 4,000 rpm
Compression ratio 7:1
Fuel system aluminium induction system and cylinder head
Lubrication fully pressurised oil system
Shared range delivery vans, light trucks and woodie station wagons
Total Bantam cars about 6,000 of all types

based on one source: the roadster is described in a section of the English Wikipedia article on American Bantam.

History of the Bantam Roadster

The 1937 redesign

When Roy Evans and his partners bought the assets of American Austin in August 1935, they acquired a small car and the tooling to build it, but no money for a new model. American Bantam was incorporated in June 1936, and in early 1937 Evans telephoned Count Alexis de Sakhnoffsky, the original Austin body designer, and asked him to design a new line of bodies around the existing tooling. Sakhnoffsky visited the Butler factory in Pennsylvania and designed a completely new front grille, new front fenders and new rear fenders. The refreshed selection of American Bantam roadsters and delivery vans went on sale in 1937.

Engine and chassis

The roadster kept the Austin engine’s 45.6 cubic inch (747 cc) displacement but the unit was redesigned with a new aluminium induction system and cylinder head. It adopted a fully pressurised oil system, a compression ratio raised by 40 percent to 7:1, and plain babbitt crankshaft bearings. The result was 20 horsepower at 4,000 rpm, a 50 percent improvement over the Austin engine. That modest output suited a very light car, and the same mechanical package served the whole Bantam range.

One body among many

The roadster was only one of a wide range of Bantam body styles, which ran from light trucks to woodie station wagons. All of them were built in small numbers: only about 6,000 Bantams of all types were produced. The 1938 Bantam model, closely related to the roadster, was the inspiration for Donald Duck’s car in the 1937 cartoon Don Donald. American Bantam continued to build cars until 18 August 1943, by which time the factory was devoted to wartime work, above all the Bantam BRC jeep and its trailers.

Design and features

  • Open body: the roadster was the open car of the 1937 Bantam range.
  • Sakhnoffsky front: a new grille and fenders gave the old Austin shape a modern look.
  • Small engine: 747 cc and 20 hp, half as much again as the original Austin unit.
  • Shared chassis: the same mechanical package underpinned Bantam vans and light trucks.
  • Light weight: a tiny car built for cheap motoring in the late 1930s.

Bantam Roadster versions

  • Roadster: the open model described here.
  • Delivery van: a small commercial body launched alongside the roadster in 1937.
  • Light trucks: utility bodies on the same Bantam chassis.
  • Woodie station wagon: the estate version of the range.
  • Bantam BRC: the wartime quarter-ton reconnaissance car that ended the civilian line.

The whole company is covered in the article on American Bantam, and the wartime vehicle in the article on the Bantam BRC. More cars are in the Bantam collection.

Sources