Hi. I am in the process of building my first wheel with a shimano nexus 7 speed internal hub. I have a 26 inch rim, and need to know what length spokes I need to build it. The model number for this hub was cj-7s40. Apparently, the hub diameter of spoke holes was 99mm. If you can tell me, I would be very happy. BTW, what is a good price for one of these in the box?? i paid $100. Actually it was birthday money so I didn't feel it.
I've used many of them with no problems and got accurate results. The first one on the list has a database of rims and hubs including the nexus 7 spd. I've built several nexus 7's using data from that exact spreadsheet spoke calculator. (The first wheel I ever built was measured by a LBS who proceeded to sell me the wrong spokes at a rip off price. Measure or calculate it yourself if you want to be sure it's right and to learn the techniques)