Original hand cranks and the common reproductions mostly produce three stitches for each turn around, so you move along at a good clip. They are an absolute delight to sew with, and on fussy quilt piecing give amazing control.
Once my Singer 128 cranked machine attracted attention at a sewing meeting.....one lady being convinced it had to be plugged in somewhere. Many people seem nervous about even attempting to sew this way, but it is not a problem. With a battery powered light you could sew anywhere.
Dianne in Colorado