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Is it possible to have a drive and driven gear on the same shaft? Rookie question, I know. I've been doing a lot of googling and sometimes I think I understand that they can, but reading the definitions, I don't understand how that's possible.

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Yes, if one gear is keyed to the shaft and the other on a bearing or sleeve - has been used in aftermarket overdrive units by Fairey for example.

Edit : also old belt-driven equipment had fixed / sliding pulleys which could be locked together or unlocked to provide a "neutral" as most were driven from a common shaft in machine shops.

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  • $\begingroup$ Thank you. If I wanted to learn more about a drive and driven gear sharing a shaft, can you recommend any sites? $\endgroup$
    – Deanne
    Sep 20 '17 at 15:59
  • $\begingroup$ I did not search for the two examples .... But you could search for flat belt drive or flat belt saws etc. $\endgroup$
    – Solar Mike
    Sep 20 '17 at 16:08
  • $\begingroup$ try here - en.wikipedia.org/wiki/Rohloff_Speedhub $\endgroup$
    – Phil Sweet
    Sep 26 '17 at 1:29

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