Following drawing shows the dimension to measure. Sorry, drawing explanation is writen in french language...
- you have to compute YOUR OWN effective rim diameter (ERD).
- Do not rely on internet date, some rim manufacturers change theyr model from one year to another !
- for a 26 inch rim, take two spokes with an appoximative length of 256 mm, the same nuts than you will use, and then follow instructions given in Rohloff user's manual, page 44. Manual is available using following link : "http://www.rohloff.de/en/service/downloads/documentation/index.html"
- When bolting the spoke, please leave a minimum margin of 1 mm vs the bolt end. This is distance "K" in Rolloff drawing, page 44.----