Old 02-07-19, 09:03 AM
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
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the top tube is the most vulnerable part of a bike. The Elance thread in this forum shows that, and a carbon bike would probably need a repair from a similar fall. That's why I don't really want a carbon bike. I think they need to make them more robust to hits like that. There is an MTB company that says they have done that, we'll have to see.

The problem with rims is they are too light. Plenty of cracked rims out there that have only been used with tubes. A tube probably does spread the stresses out a little bit more evenly. I am waiting until road tubeless is a little more established. I have heard of problems. I have some 38mm tires I am running tubeless and I would never put tubes in those wheels.
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