i've also always assumed that maybe the adapteur's design was perhaps a bit stiffer ? the ta rings seem so thin to me..
Andrei Padlowski Glen Ridge, NJ
if you are a racer or someone interested in changing chainrings quickly
> without unmounting the crankarm and pedal, then the TA professionnel
> adapteur is for you. If you are someone setting up bike gearing and
> sticking
> with it, like a non-racer, then the adapteur isn't necessary. If you look
> at
> a lot of old racing pictures, you will see many racers using these
> adapteurs.
>
> Peter "two down, one to go" Brueggeman
> La Jolla California USA
> pbrueggeman(AT)ucsd.edu