This is a lower to mid range bike. The stickers say CroMo, which does not mean much, but perhaps not exactly gas pipe. It is not one of the earlier, real oddball, Kabuki's however. This is a pretty ordinary lugged steel bike.

I am very sure the frame is not cracked anywhere. Possible, I guess, but not my guess.

Is it really true that high-end bikes flex less than lower end? I would have naively guessed the opposite. Wouldn't a thick, hi-tensile steel frame not flex very much?

Some one asked if it could be the spindle or crank arms flexing. Surely a solid steel spindle that is about 3/4ths of an inch could not be humanly flexed? And I thought that aluminum arms would not really flex either. Wouldn't they just break instead?

jim