Front wheel speedo identification

Started by JimmieS, July 23, 2019, 09:11:55 PM

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JimmieS


phutton


JimmieS

Hi John
Many thanks for your kindness in supplying the info. Much appreciated. Both are clockwise units.
Jim

singleminded

The important part is the rotation and the ratio..The numbers should relate to that but I havn't found a definative source yet.

JimmieS

Hi John
Many thanks for link and info. Will have a look and see what they are.
Jim

singleminded

#2
http://www.vintagebritishcables.com/Smiths-Gearbox-Motorcycle.php
The numbers are identifiers, but I have no info..Have a look at the link above.
For Sunbeams with the drive on the right you need a clockwise rotation of the input and clockwise rotation on the output.
If you have clock in and anticlock out then it fits on the left of the bike...John

JimmieS

I have what I understand are two 1930s Smith front wheel speedo gearbox drives. One is stamped '25791' and the other '34121' on the cap below the split pin. Are these reference numbers, serial numbers or ?
Jim