The Calthorpe Motor Company based in Bordesley Green, Birmingham, England made a range of cars, motorcycles and bicycles from 1904 to 1932.

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Formation[edit]

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The company had its origins in the 1890s as a Birmingham bicycle maker called Hands and Cake run by George W. Hands. This was renamed the Bard Cycle Manufacturing Company in 1897 changing to the Minstrel Cycle Company in 1901.^[1] The Minstrel Cycle Company evolved into the Minstrel and Rea Cycle Company, and it appears the Calthorpe Motor Co Ltd was created at about that time. It was reported that the two companies were operating out of the same premises in Barn Street, Birmingham when a serious fire occurred in June 1905.^[2] By 1909 the Calthorpe car works had moved to Cherrywood Road, Bordesley Green, Birmingham.^[3] Around November 1912 Calthorpe Motor Co (1912) Ltd was incorporated, with directors The Rt. Hon. Lord Teynham, Wilfrid Hill, Daniel Taylor, George William Hands and Harry Joyce.^[4]

Car production[edit]

In 1904, the first motor car, a 10 hp four-cylinder model, was announced.^[5] Some, or all, of the engines for these early cars were made by Johnson, Hurley and Martin Ltd at their Alpha Works in Coventry until about 1909 (there was a dispute in 1913 over ownership of the engine block casting patterns).^[6] In an article about assembling cars from components, it was stated that the 16-20 Calthorpe, launched in 1907, had an Alpha engine.^[7] The 16-20 model was launched in summer of 1907, and appeared at the Olympics motor show, where it was described as having a 4-cylinder engine of 93mm bore and 104mm stroke (so 2825cc), with a Hele-Shaw clutch and transmission by live axle. White metal bearings are used in the engine, but ball bearings are to be found in the gearbox and back axle. There is a fifth transverse spring to aid in keeping the body steady when travelling over rough roads.^[8] This particular model did very well in reliability trials and other events in 1907 and 1908. At the Olympia show in 1908 it was announced that for the forthcoming season the 16/20 would have an increased stroke from 105mm to 120mm, this appears to coincide with the Calthorpe moving away from the Alpha engines, to another supplier.

Calthorpe briefly made some larger types, but it was in the light car field that they specialised, using proprietary White and Poppe engines. The cars were successfully raced in France in the Coupe de l'Auto series. A small car was announced in 1913 for the 1914 season with the 10 hp Minor, which proved to be a real large car in miniature, with a 3-speed gearbox and shaft drive.

After the war the large cars were dropped, but the Minor re-appeared with a slightly larger engine of 1261 cc. In 1920 a Mr J Mathews was in charge of production, and a target of making 50 cars a week was set. The cars continued to have excellent coachwork made by the Calthorpe subsidiary company of Mulliners (acquired in 1917),^[5] who had an adjacent factory. Sporting activity continued with Woolf Barnato, amongst others, racing at Brooklands. George Hands briefly left the company in 1922 to set up his own Hands make of cars in the Calthorpe motorcycle factory in Barn Street, Birmingham but returned in 1924.^[5] Whilst away he developed the six-cylinder overhead-camshaft engine that was fitted for a short time to the 12/20. The Hands cars seem to have used Dorman engines.

The days of the high-quality light car were coming to an end by the late 1920s, and sales of the fairly expensive Calthorpe were declining. A receiver had to be appointed in 1924, and the Bordesley Green factory closed, but very limited production kept going for a while. A final fling with the 1925 15/45 six-cylinder 2-litre car was really too late, and sales of the remaining stocks of cars had virtually ceased by 1928.^[5]

About 5,000 cars were made in the post-war period;^[5] pre-war production is uncertain. Fewer than ten cars are thought to have survived.^[1]

Car models[edit]

Calthorpe motorcycles[edit]

The Minstrel Cycle Company became the Minstrel & Rea Cycle Company in 1905 and started making motorcycles in 1909. The company name changed again to the Calthorpe Motor Cycle Company, and production continued until 1938. Both cycles and motorcycles were produced in the Barn Street works, the car production moving out to Cherrywood Road.

Until production paused during WW1, Calthorpe used a wide range of engines in their motorcycles, starting with White and Poppe, then Precision, J.A.P. and in 1915 Peco 2-strokes.

In the late 1920s, the company launched a new range under the sub-brand of Ivory Calthorpe. Using a self-produced single-cylinder sloper-design engine, the engine was similar in proportions and output to contemporary BSA units.^[10] The ohv twin-port 348cc launch unit was fitted into a full-cradle duplex frame, and used a 3-speed Burman gearbox, with a tank mounted change.^[10] The engine breathed through an Amal carb, and used a BTH magneto mounted to the rear of the cylinder. By 1935 there was a 498cc option, but top speeds were similar at around 70 miles per hour (110 km/h). The design was sit-in as opposed to traditional bicycle sit-on design, later described by one tester as a 'sack-of-potatoes slump!'^[10] With a marketing unit by no sales team, the motorcycles were exclusively sold by London-based dealer Pride & Clark in Stockwell Road, Brixton.^[10] P&C stated that the units should be sold at £52 and £54 respectively - a relatively high pricing for the time, but one which left a slim margin for Calthorpe MCC.^[10]

When the receiver sold the works in 1939, Bruce Douglas, the nephew of the founder of Douglas, bought the Calthorpe equipment and moved it to Bristol.^[11] He built new models powered by 347cc and 497cc Matchless engines, but only a few were built before production was stopped by the outbreak of World War II.^[11]Production did not recommence after the end of the war, and the equipment was sold to DMW.^[11]

See also[edit]

References[edit]

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1. ^ ^abGeorgano, Nick (2000). The Beaulieu Encyclopedia of the Automobile. London: Stationery Office. p. 240. ISBN0117023191.
2. ^Birmingham Cycle Works Destroyed, Stamford Mercury, 30 Jun 1905, p3
3. ^Court Reports, Birmingham Daily Gazette, 28 January 1909, p6
4. ^New Companies Registered, The Auto Motor Journal, November 1912, p1343
5. ^ ^abcdeBaldwin, Nick (1994). The Automobile A-Z of Cars of the 1920s. Bideford, England: Bay View Books. p. 51. ISBN1901432092.
6. ^'Claim over motor-car engine patterns', Coventry Herald, 11 April 1913, p8
7. ^Motor Notes, Belfast News-Letter, 6 Sep 1919, p7
8. ^Olympia Motor Show, Pall Mall Gazette, 14 Nov 1907, p10
9. ^Motors at Olympia, Daily Telegraph & Courier (London), 18 Nov 1908, p15
10. ^ ^abcdeCJ Ayton (1985). Guide to Pre-War British Motorcycles. Temple Press. ISBN0600351408.
11. ^ ^abcTragatsch, Erwin (2000). The New Illustrated Encyclopedia of Motorcycles. London: Quantum Publishing. p. 560. ISBN1861603428.

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