Originally Posted by
rootboy
To me, "corn cob" means 13-17 or 13-19, etc. IMO, 13-21 or above doesn't qualify.
Yeah, some of us are guilty of stretching the definition a little.
But I think the general thrust of the thread is (or has become) that a triple with a tightly-spaced FW/cassette can be really nice... and true corncobs are hard to come by in post-FW systems. Once you have one-tooth jumps out to the 17T or 19T, there are diminishing returns to those tiny jumps, so they move on to the two-tooth jumps. (The 13-14-15-16-17-19-21 "J" cassette I wish I had bought more of encompasses the classic 5-speed 13-17T corncob and adds to it.)