Fun fact: The Sturmey 'rotary shift' three speeds (RS-RF3, introduced in 2006) use an indexed (well, duh!) shifter with different cable pull than the classic Sturmey shifters of the last century. Oh, AND the rotaries are unique among Sturmey hubs with their 3/8 axles, the classics of course are threaded 13/32.



Super fun fact: Sturmey designed the inside-the-dropouts rotary shift hub in 1971, and first marketed it 35 years later.