something that I had not ever given any thought to caused me a problem at the weekend.
I was trying to build up a pair of mini wheels using Araya 1 3/8th rims and Suzue large flange hubs using 14x7 7/16 double butted spokes, same size I used on the laserlite wheels I had built. But they are way too short, I hadn't appreciated that the 1 3/8th rims are way bigger in internal diameter than the usual 20x1.75 Araya 7x rims!!
I guess the 20 refers to the diameter to the outside of the tyre that is being run and not the internal of the wheel!!
Please can some advise (ball park) what length spokes are needed for such a build?
Thanks
Paul