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Use the figure as measured, then round down on the spoke lengths. LB seem to measure just to the inside of the rim, without allowing for the part of the spoke which should be inside the head of the nipple, so assuming you want the spoke to be roughly flush with the top of the nipple you would expect to add a few mm's to their measurement to get the true ERD.
Brommers
@dglshrn
LB rims arrived today. The stated ERD is 'not including nipple head dimension', so when I measure ERD it comes out higher - which figure should I be using? If I only include the nipple up to the shoulder/bottom of the head, ERD is pretty much the same as what LB say, just 1mm higher.
Obviously, the difference between the two ERD figures makes quite a difference in spoke length.
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