The Austin Twelve was introduced by the Austin Motor Company in 1921. It was the second of Herbert Austin's post World War I models and was in many ways a scaled-down version of his Austin Twenty, introduced in 1919. The slower than expected sales of the Twenty brought about this divergence from his intended one-model policy. The Twelve was announced at the beginning of November 1921 after Austin's company had been in receivership for six months. The number twelve refers to its fiscal horse power (12.8) rather than its bhp which was 20 and later 27. The long stroke engines encouraged by the tax regime, 72 x 102 later 72 x 114.5, had much greater low speed torque than the bhp rating suggests.
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| - The Austin Twelve was introduced by the Austin Motor Company in 1921. It was the second of Herbert Austin's post World War I models and was in many ways a scaled-down version of his Austin Twenty, introduced in 1919. The slower than expected sales of the Twenty brought about this divergence from his intended one-model policy. The Twelve was announced at the beginning of November 1921 after Austin's company had been in receivership for six months. The number twelve refers to its fiscal horse power (12.8) rather than its bhp which was 20 and later 27. The long stroke engines encouraged by the tax regime, 72 x 102 later 72 x 114.5, had much greater low speed torque than the bhp rating suggests.
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| Head
| - detachable, pistons are aluminium
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| Length
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| dbkwik:tractors/pr...iPageUsesTemplate
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| valvetrain
| - side-by-side valves, tappet covers may be easily removed, timing is driven by chain
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| Power
| - @2,000 rpm
- Tax horsepower 12.8
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| Name
| - 1660(xsd:integer)
- 1861(xsd:integer)
- Austin Twelve 1660 cc & 1861 cc
- Austin Twelve engine
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| Configuration
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| Caption
| - Twelve with fabric saloon body c. 1928
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| Width
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| fueltype
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| management
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| Weight
| - Chassis 16¼ cwt,
- saloon 24 cwt,
- tourer 22 cwt,
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| Production
| - 1921(xsd:integer)
- 88000(xsd:integer)
- not known
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| body style
| - catalogued: tourer, saloon, sports coupé, Harley all-weather tourer, fabric saloon
- special chassis for various—hire car, taxi, London taxi, van and other commercials
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| Manufacturer
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| coolingsystem
| - radiator, fan, cooling water is circulated by a pump forward of the timing on the nearside
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| wheelbase
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| fuelsystem
| - single carburettor supplied by a vacuum tank which draws from a reservoir beneath the driver's seat, ignition by magneto driven by chain placed behind the timing, dynamo driven by same chain
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| AKA
| - to distinguish this Twelve from Austin's Light Twelve cars
- Austin Heavy Twelve
- and Austin Heavy Twelve-Four
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| Successor
| - none
- Austin Twelve 1535 cc, 1946
- Austin Twelve 1861 cc
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| SP
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| Block
| - cast iron, alloy crankcase. The inlet manifold is cast in one with the cylinder head
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| Engine
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| oilsystem
| - lubrication by forced feed, filler on the offside
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| transmission
| - single-plate clutch, 4-speed centrally controlled gearbox, linked by disc coupling to the open propellor shaft, by metal universal joint to a helical bevel driven live rear axle. The clutch housing is cast in one with the gearbox.
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| Predecessor
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| abstract
| - The Austin Twelve was introduced by the Austin Motor Company in 1921. It was the second of Herbert Austin's post World War I models and was in many ways a scaled-down version of his Austin Twenty, introduced in 1919. The slower than expected sales of the Twenty brought about this divergence from his intended one-model policy. The Twelve was announced at the beginning of November 1921 after Austin's company had been in receivership for six months. The number twelve refers to its fiscal horse power (12.8) rather than its bhp which was 20 and later 27. The long stroke engines encouraged by the tax regime, 72 x 102 later 72 x 114.5, had much greater low speed torque than the bhp rating suggests.
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