Originally Posted by FLYcrash
It's too bad that the sizes I need for my upcoming build (a 650B Rivendell) aren't available.
Originally Posted by
cyccommute
..you don't have to have the exact size that the calculator tells you. A 1-2 mm difference isn't that big a deal. Shorter is usually better than longer.
While we're at it, let's not forget that nipples are available in 3 different lengths as well. With 14 and 16 mm to choose between apart from the most common 12 a 6 mm deviation from the target length is a manageable issue.