oh??? maybe I'm sorta mistaken then... I thought there was a pin sticking out on the big chain ring next to the crank. That pin is there to keep you from jamming the chain between the big chain ring and the crank.

so wouldn it be possible to just "release" the front deraillure onto the smallest chain ring and wouldn't that make/cause it to pop back on??

crinkling up my nose and confused,
Smilingcat