On 11/14/2013 10:21 AM, Jim Bronson wrote:
OK, so 19+5=24. I majored in liberal arts. What is the significance
of the answer? A 650bx42 tire is 24mm smaller than a 700Cx32 tire?
(assuming sizes printed on the sidewall are more or less correct).
19mm is the additional clearance you get because of the smaller rim.
As you can see, I'm a liberal arts major too: you lose 5mm, so you have
to subtract rather than add it because the tire is larger, so you have a
net gain of 14mm clearance. I should have said "add back", that's what
I meant.
On Thu, Nov 14, 2013 at 7:31 AM, Steve Palincsar <palin...@his.com
<mailto:palin...@his.com>> wrote:
On 11/13/2013 11:54 PM, Jim Bronson wrote:
I had short reach brakes before with 700x32mm tires and they
barely fit under the brake bridge. Don't know what that
converts to in 650b
subtract the difference in radius (622 - 584 /2) of the smaller
rim and add half the additional width (42-32 / 2) of the new tire
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