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Posts: 2584
01/26/10 8:43 PM
Senior member
Posts: 36441
01/26/10 9:44 PM
ADMIN MIGHTY PANTS
Sasquatch wrote: I've got the '63 TR6 650,and a '78 Bonneville 750 and both are whitworth ................... Maybe the new generation are metric,but not the older ones.Also,though I've never tried it,I've been told by several people over the years that Sporty frontends would bolt right up to the early Trumps........................... As that link shows ....Whitworth is a system the British used for threads and thread pitches.. not dimensional.. That would mean the dimensional sizing where the bearings sit would probably be standard USdimensions .. therefore being able to convert to the sporty sizes..But I thought the Brits had given up that silliness back in the 60s.. Is your 78 definatelyWhitworth..??
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