Originally Posted by meanwhile

There's a very marginal reduction in rolling resistance for larger diameter wheels; you could get a much bigger boost by buying premiuum tyres. And a 700c bike won't be as agile, all things considered, and equally strong wheels will cost more. If you want to go faster, change the tyres.



Find a new LBS! The rings just bolt off. As long as you're not going from a double to a triple you certainly don't need a new BB or cranks. But having looked at the spec, a significantly larger chainring wouldn't make sense on this bike - the geometry isn't aero enough. You just haven't learned to pedal properly - you need better pedals (cheap BMX pedals with pins will do) and to learn how to "spin".