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Aero Engine - Beardmore Aero Engine Ltd, Austro-Daimler, 120 HP, 6-Cylinder Inline, England, circa 1914 Object Reg. No: ST 017925

The Austro Daimler was one of the first successful in-line, water-cooled aero engines developed in Europe. The design was used by combatant nations on opposing sides during the First World War. In 1912, the Austro Daimler Company allowed Arrol-Johnstone Ltd of Dumfries, Scotland, an automobile maker associated with William Beardmore & Co. of Glasgow to produce their 120 horsepower, six-cylinder engine under licence. These engines were later improved by fitting larger cylinders to produce 160 horsepower.

This engine was acquired from the Science Museum in London. It is a 120 horsepower British-built model fitted to the F.E series pusher biplanes produced by the Royal Aircraft Factory. It is fitted with two carburettors and two magnetos. It is marked 'G.W. 1022', 'W.D. 1258' and '188'.
General Specifications:
Type: 6-cylinder, inline, upright piston engine
Bore: 5.12 in (130 mm)
Stroke: 6.89 in (175 mm)
Displacement: 851 cu in (13.145 L)
Length: 57 in (1,148 mm)
Width: 19.9 in (505 mm)
Height: 31.9 in (810 mm)
Dry Weight: 545 lb (247 kg)
Valve Type: Overhead poppets
Fuel Type: Petrol
Cooling: Water-cooled
Reduction Gear: Direct drive, right-hand tractor
Power Output: 154 hp (115 kW) at 1,400 rpm (maximum power)
Specific Power: 0.18 hp/cu in (8.74 kw/L)
Compression Ratio: 4.85:1
Power-to-Weight Ratio: 0.28 hp/lb (0.46 kW/kg)
Acquisition Information:
Loan & Subsequent Donation from Science Museum (London), 1929
Discipline: Technology

More information

Tagged with: aero engines, internal combustion engines, world war i 1914-1918
Themes this item is part of: Engineering Collection, Transport Collection
Primary Classification: AIR TRANSPORT
Secondary Classification: Aero Engines
Tertiary Classification: reciprocating propeller engines
Designer: Austro Daimler, Wiener Neustadt, Austria, pre 1912
Manufacturer: Beardmore Aero Engine Ltd, Glasgow, Scotland, Great Britain, circa 1914
Manufacturer: William Beardmore & Co., Glasgow, Scotland, Great Britain, circa 1914
References: Specifications from 'Beardmore 120 hp', Wikipedia,, viewed 10/11/2014.


Alan Laird Posted on 10 Nov 2014 3:21 AM
Hi, great website, but the caption on the 120hp Beardmore engine is incorrect. The word 'England' should read either "United Kingdom" or "Scotland" as the Beardmore works was located in Glasgow, Scotland, a part of the United Kingdom in 1914

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