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--></style></head><body lang=EN-US style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>Just when I thought I had a handle Whitworth, BSPP, BSPT, SAE, UNF, etc. along comes BSC (British Standard Cycle). The threads on the transmission speedo drive and the angle drive are not the best and could use a refreshed. The pitch is 26 TPI and the diameter is ¾” as best I can measure. After searching Google the closest match I could find is 3/4" X 26 TPI BSC.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have never heard of British Standard Cycle before. Can anyone confirm if this is the tread size?</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Harold<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>