both wheels down sized, your gearing becomes a little lower too.. as I said trail is shorter because the wheel is smaller, but not much.
some people go to great lengths to reduce the trail, on Francophile 650B randonneur bikes,,




Im getting a lot of pootling on my Bike Friday .... 20" wheels solve the TCO. and there is nothing cheap about them , want a high end group? just ask..

they are using a JIT build... much like ordering food at a cafe, you pick from the menu, and your order goes into the build queue.





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