Shimano AB-100 "Auto-2" Automatic 2-Speed Hub

I got a note from Matthias in Germany asking if I had any more information on the aforementioned hub that is shown in the Shimano catalog from 1975 on page 30.A I have never seen it in person and told him that I would post to my devoted followers (all eight of you) on my blog.A From what I can see in the picture, it would appear to use centrifugal (centrific?A I never get them right) force to engage the shift mechanism.A In any event, if any of you folks out there have any further information, let us know.A Thanks.

About Bobby Sapovits

The creator of the Bicycle Info Project. Dedicated to scanning hundreds of old bicycle catalogs for restoration work, research, and general bike curiosity.
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