If you live in a relatively flat city, a single-speed bike is a fantastic idea. But if you live in any modern city, dropping $1,200 on aluminum-framed fashion-bike probably isn't so smart. The bike is ...

[Alex] has been hard at work on his second vegetable-oil-powered diesel bike build. The last time we checked in, he was finishing off work on his Honda CB400. Unfortunately, he felt it wasn’t quite ...

Diesel bikes are quite a rare thing in the two and three-wheeled world, and bikes powered by refined bacon fat are even rarer. In fact, there’s only one such machine that we know of, and it was ...

Fixie bikes, the one-speed tools of bike messengers and hard-core city riders, are usually purpose-built tools. But design houses Diesel and Pinarello thought fixies could use some prettying up, and ...

A unique technology partnership between Cranfield University and California-based Hayes Diversified Technologies (HDT) has created the world's first production diesel military motorbike – and the ...