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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-
Cool, thank you. That's what I was thinking was probably correct, but wanted to check before I speak to my spoke guy! He can do odd numbered cx ray, but I expect it'll cost more as he has to cut them - will evens be ok? i.e. 256, 252, 266 and 266? And finally - brass nipples over alu, and 12mm?
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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
To be fair, they do state that that's the measurement they're giving you.
dglshrn
gbj_tester
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.