SPEEDO DRIVES, CHRONOMETRIC AND MAGNETIC

British bikes with Chronometric speedos , say up to 1963 use 2:1 speedo gearboxes. The size of the hole for the spindle may vary and the drive direction can be reversed by taking it apart.

SPEEDO DRIVE

TELBG5330/168
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SPEEDO DRIVE 2:1

TELBG5330/287
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SPEEDO DRIVE 15/12

TELBG5330171
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SPEEDO GEARBOX AJS/MATCHLESS

52283-5
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SPEEDO DRIVE 125:1

BG5330/164
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