Originally Posted by
63rickert
When Grant was going on about 603mm bead seat diameter I dropped him a note saying that 597 had been largely abandoned by tire makers but there was a significant built-in market with old Schwinns and collectors of British 26x1-1/4 bikes. And it was only 1% different from his proposal. And the tire makers had molds for 597 already, all they needed was an order. Got back a 1500 word rant about how 1% really matters. And he was a genius. And I understood nothing about bicycles. Kinda lost interest in his sales spiel after that.
I'm guessing 6 mm in tire bead variance may be too much while a few mm in crank arms may be imperceptible. I'm a genius too but lack the 1500 word vocabulary even if I throw in my most salient expletives =*)