> The term "twingle" was new to me so I searched... and found
> the following explanation. It's an interesting concept:
> http://physiology.usouthal.edu/restore/allstate.htm
Nice wikipedia writeup. I remember the Sears bike, but the design's
been around a lot longer than I thought. Astonishingly too, I find
that
other manufacturers besides Spagthorpe have also built racing
twingles.
http://en.wikipedia.org/wiki/Split-single
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> the following explanation. It's an interesting concept:
> http://physiology.usouthal.edu/restore/allstate.htm