Originally Posted by
jbonamici
I'd have to say "wobbly" is overstating it by a fair margin, but I'll concede that this isn't a track frame.
For stiffness, the '82 Schwinn Super Sport 25" is built from Tange No. 2 single butted rather than double butted tubing. I'm 6'3" 250#. Going around corners hard at speed there is some very, very slight flex in the chro-mo front fork.
I know there is some slight flex because occasionally I can hear it against the front brake shoes which are adjusted about 1/8" from the rim. Otherwise it's plenty stiff. My alternate rider is an '84 Miyata 610, which around the curves has no front fork flex whatsoever. Both bikes are very similarly built up, and their weights are very very close.
For reference, a 1985 Schwinn Traveler passed through the stable a while ago. Now that was a noodly frame!