Originally Posted by
Boxkite
Has anyone ever used an IGH and RD combo? That would be fun! I don't know anything about IGH as far as axle length and whether or not a multi-speed cassette can be affixed to one. Sorry for hijack.
Once again the Late Great Sheldon Brown to the rescue. About 2/3 of the way down the page.
https://www.sheldonbrown.com/org/otb.html
"The O.T.B. currently sports a Sturmey-Archer AW 3-speed hub, with 7 sprockets, driven by 3 chainwheels: 3 x 7 x 3 = 63."
Cheers