Quote:
Originally Posted by 11.4
Correct. There are certain rims that require special washers. Mavic CXP-30's also come to mind. But those washers come with the rims (or don't, if you are buying an out of production rim and someone already lost them). Washers, like ferrules, were an attempt to deal with crappy metallurgy and even worse extrusion technologies on rims a long time ago. Plus people wanted the rims to be so light that they made the wall thickness so thin it wouldn't survive, and then heat treated it to make it brittle to boot.
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There are several carbon rim manufacturers (zipp, schmolke, knight) who require you use nipple washers (usually Sapim Q-lets) and although they can be a major pain in the a$$ to install, my experience has been that they make evening out the tension a much faster process. And the q-lets are quite small so don't add too much weight. Not saying they are a perfect solution, but from a builder's perspective washers do have a benefit.
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