Originally Posted by
oldschoolbike
That makes sense. Sheldon refers to the ACS as having very different gear ratios from the typical AW freewheeling 3-speed and no "overdrive" ratio. There may have been some common parts, but to first order anyway, it was a different hub.
So the question remains, what did Sheldon have to do to the gear shifter? If it was a true fixed gear in all ratios, what would be the problem be with running it backwards?
oldschoolbike
I am not as well versed on the ASC as I am on the S3X, but the latter model's internals had more in common with the wide range 5 speed than they did with the 3 speed. The planet carrier and the ratios are the same as the 5 speed.
I did this video nearly 10 years ago to demonstrate how the S3X works.