Corah of King's Norton, Worcestershire.
1910 Cycle and Motorcycle Exhibition
Corah Motor Mfg. Co.
King's Norton. Stand No. 72A.
This is a very attractive exhibit, introducing as it does the first serious attempt to produce a motor-cycle fitted with a piston valve engine. the engine generally follows standard lines, but the valve chamber is enlarged to accommodate a small piston, which is rotated by suitable gearing. This piston is pierced by two channels, connecting respectively the induction and exhaust pipes with the cylinder. The bore and stroke are 85 mm. x 88 mm., and, being of standard size, its efficiency can be readily compared with other types. The machine is fitted with a two-speed gear, and has worm drive and spring shaft. The mudguards are of special design, and the Corals spring forks and a spring seat pillar are also fitted.
Source: Graces Guide
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