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Iris were motorcycles produced from 1902 to 1904 in Brixton, London by Legros and Knowles.
1902 The machine was fitted with their own make of 2.5hp water-cooled engine, fitted into a diamond bicycle frame. The belt drive had a free-engine pulley to act as a clutch. It also had a hand starter. The front part of the tank acted as the radiator for the cooling system, with air tubes running from the front and exiting along each side.
1903 Added to the previous model was a 5hp water-cooled V-twin, with the engine fitted into a loop frame but all the other features retained.
November 1903 listed as Iris Motor Co of Holland Street, North Brixton.
1904 The models continued, the radiator was improved and air-cooled models were also listed.
1906 Produced 25-30 and 35-40 h.p. shaft-drive models.
1911 Directory lists them as Iris Cars Ltd., Scrubs Lane, Harlesden, London NW, and as motor manufacturers
Notes: There was also an Iris brand of sidecar of Highbury Station, London, in the mid 1920s.