RoadRider400
Some bloke that likes cycling alone
Tubes I want to buy are either 28-35 or 35-45. Im guessing its the smaller one. Is that right?
The permeability (to air) of a tube with thicker walls is less, but that's not the puncturing mechanism.the fatter option . . . tube is less stretched, so when you do puncture the leak is slower.
If there's a hole in a stretched tube, the rubber just next to the hole will pull away from the hole, because the rubber on the other side of the hole that was previously holding it in position is no longer doing so. Because the rubber has pulled away from the hole, the hole is bigger, and the air comes out faster, until enough has leaked out that the tube is no longer stretched.Andrew - besides the fact that most punctures are not 'slow' ones (citation needed) - why do you think that a hole through a 'less stretched' tube will leak air more slowly - whence do you draw that assertion, please? Or are you relying on intuition?
Good call. Let us know if you think the difference makes a difference.I was going to get 2 inners so I might as well get one of each seeing as its a draw with the judges.