Colcham motorcycles were produced from 1962 to 1972 as the result of a partnership between John Collins and Alan Chambers.
The pair built grass-track and a few speedway machines. They would fit any engine specified by the customer. For his own racing John Collins used Velocette units. They made their own front-fork dampers and fuel tanks, but most of the other part were bought-in.
Source: Graces Guide
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