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British Motorcycles

GSD Motorcycles

GSD were motorcycles produced from 1922 to 1923 by R. E. D. Grant of Coventry. The initials stood for Grant Shaft Drive.

  • The make, with its unusual shaft drive, created a stir at the 1922 Olympia Show, where it was first exhibited.
  • In addition to the shaft to the under-slung worm at the rear wheel, it took the drive from a four-speed, car-type gearbox. This was built in-unit with the 350cc two-stroke White and Poppe engine, and set across the frame. This duplex frame, with Brampton Biflex forks and foot-boards for the rider, had the clutch between engine and gearbox and the choice of hand or foot control.
  • Another unusual feature was the position of the magneto, behind the gearbox and alongside the output shaft, so that it must have been driven by a long quill shaft that ran straight through the clutch and gearbox main shaft. There was a cowling to enclose the engine and the machine was said to offer comfort and weather protection.
  • As an alternative, a 976cc sv JAP V-twin was proposed, along with a 494cc flat-twin Bradshaw which was built in 1923.
  • The make was not to be successful as the design was unconventional and expensive, so there were few prospective buyers.

Sources: Grace's Guide



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