In a message dated 9/20/2002 9:38:37 AM Eastern Daylight Time, LouDeeter@aol.com writes:
> In addition to quicker wheel changes (questionable in my mind if the changer
> is practiced), vertical dropouts eliminate the uncertainty of left/right
> dropout adjustment screws and they eliminate pulling the wheel out of the
> dropouts during hard pedaling efforts. Other than that, I can think of no
> other advantages.
Allows a shorter chainstay. Also, I think it was an effort to control wheel placement so that derailleur to cog relationship was controlled as indexing became the norm.
Pete Geurds
Douglassville, PA