Bike Forums - View Single Post - Wheelbuilders: I have questions about 650b HED Belgium Plus rims
Old 03-03-18, 09:34 PM
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Originally Posted by well biked View Post
FWIW: Wholesaler QBP is a distributor of those rims, and they publish both the manufacturer's stated ERD and their own hands-on ERD measurement. QBP measured the ERD at 554.5mm. Again, FWIW.
Given that there's no precise standard for nipple head thickness, nor precise agreement about spoke engagement, ERD specs to a half 0.5mm are a farce.

Another example of BS implied precision where no such thing exists. It's no wonder that we see variance in this spec.
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