Originally Posted by
paul2432
Does anyone know if the Shimano published specs are to the center of the flange? Based on my actual meaurements, it looks to me like the c-left and c-right dimensions are to the outside edge of the flange.
FB: This is a box rim with probably 4mm from the top of the eyelet to the second wall. I do have some room if the spokes are too long.
In any event, it looks like the Mavic calculator gives about 1mm or so longer than the UBI or Musson calculator regardless of the numbers.
I found a place near me (Excel Sports) that sells individual spokes, so my need to stay with one length is lessened. I'll probably go with 260mm and 258mm (Excel only offers even lengths at this size).
Paul
I measured an Ultegra 6600 hub the other day and found the Shimano published numbers a little off from what I measured. I agree with you, the published numbers appear to be to the outside of the flange rather than the center. The good news is that this makes no practical difference to the spoke length. If you run your spoke length calculation with the different dimensions you will see that you get about the same spoke length for the published numbers as with your measured numbers.