Wheelbuilding / Wheel Building / Wheel build help

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Goyt

Just received some Lightbicycle rims (60mmx23mm) - the ERD listed on their website appears to be out by 5mm... Am I measuring incorrectly or are they wrong?
234 x 2 + 57 = 525

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mespilus in reply to @Goyt

I would like to see your zero width 2D hub. Aren't you measuring in the plain of the rim instead of the hypotenuse from the spoke holes of the hub which will be displaced by some of the width of the hub?

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gbj_tester in reply to @mespilus

Aren't you measuring in the plain of the rim

ERD is correctly measured in the plane of the rim. Correcting for the hypotenuse is done in spoke calculation afterwards.

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