Smiths rear wheel speedo drive

Started by courtney, 21 Aug, 2025, 05:20

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courtney

1965 C15

Hopefully someone can help. Is the rear wheel speedo drive supposed to thread onto the rear axle or just slide on and be held in place with the nut?
1965 BSA C15
1970 BSA B25 (US spec.)
2004 Aprilia Tuono

limeyrob

Slide on an held with nut. Be sure to line the two drive dogs up as the slots of these got bent from being done up with the dogs not in the slots.

courtney

Thank you for confirming. Mine is a tight fit and has to be threaded on, so something isn't correct.
1965 BSA C15
1970 BSA B25 (US spec.)
2004 Aprilia Tuono

idie

Usually the nut squashes the metal around the hole. I had this problem on my Velocette. Just run a file around the hole to open it slightly.