I bought my 6yo a used Specialized 24" MTB that is a bit too bit for him to ride off road. I have an older set of disc hubs and thought about building him some 20" wheels since the frame and fork at disc ready. I have all the parts in my part bin to do this pretty easily. However when I started to calculate spoke lengths I have having a hard time finding the lengths I need for a 2 or 3 cross wheel in 20" given the hubs I have. Could I radial lace these wheels and be okay? Of course he weights nothing and can't ride hard enough to do any damage, but what do you suggest?
Hubs are I9 J-Bend and the rims I am looking at are Sun CR-18 32H.
Hubs are I9 J-Bend and the rims I am looking at are Sun CR-18 32H.
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