Mazda signed up as a licensee for Wankel’s rotary technology in 1961, and soon got to grips with the main issues (having spent $50m on development). As well as the exotic Cosmo and RX-7, the technolog

1955-1964 1975-1984 YAMAHA RD350LC

2005-2014 BMW S1000RR

B ack on two wheels this month – ...

The first variable timing systems offered on internal combustion engines, powervalves were designed to allow your two-stroke to be both tractable and exciting. Here are the essentials on what they consist of, the different systems and how they function

In 1971, 16-year-olds were restricted to riding mopeds in the UK, prompting a rash of poseworthy sports ’peds from Europe to tempt teens. We found these signs of the times lurking in our archive