Whats the best London bike shops?

Tests have shown that up to 16 mp/h, the small wheel is more efficient than a big wheel. Between 16 and 33 mp/h there is little difference. Over 33 mp/h the gyroscopic effect of the big wheel makes it more effective. Most folks do not go over 33 mp/h.

small wheeled road bikes is a huge scene in Japan.

Look how many bikes are available from bianch alone:

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