I put the sub15s on today with white 700 x 23C tires and a 16T sprocket. The bike is a rocket.... I own a rocket! I will post pictures when I get to a regular computer. My smartphone and this forum does not allow me to upload pics from my device, only a url.

Anyway, the bike looks like art now, as well. It is functional art. I put a 20T freeeheel sprocket on the other side of the rear wheel. Flipping it was easy on the road. A small 5mm allen. Flipped and I could tackle hills. 22T and 23T I have ordered.

However I road around a number of towns with it today. The concept of both sides freewheel with one for most terrains and one just for climbing is proven AND these Wabi Sub15s are amazing value and definitely are QUICK!