Andrew Trevitt

One of the new features on the updated 2012 BMW S1000RR is a "best lap in progress" function as part of the onboard lap timer. By comparing distance and time at intervals, the lap timer can determine if elapsed time to that point on the track is better or worse…

In my article in the current issue of Inside Motorcycles ("Computing Speed II," April/May 2012), I briefly discuss measuring wheel speed and calculating slip as part of a data acquisition system. "Slip" is a broad-meaning term and a difficult parameter to quantify accurately, and I thought it deserved some more…
One lesson I was taught when I first started racing was that you should always be either on the throttle or on the brakes, as time spent without one or the other applied is lost "coasting." By coasting, you are letting engine braking (or lack of it) control your speed,…
This picture of Casey Stoner at last year's Spanish Grand Prix at Catalunya shows the Australian using every possible centimetre of the track mid-corner. It illustrates, quite graphically, the importance of riding as closely as possible to the apex in each turn. Other pictures show Stoner even riding right over…

In the current issue of the magazine and in my last blog, I talk about GPS-based data acquisition systems and touch on some of the GPS channels available. As a tool to improve your riding, the accurate position data and segment times available from a GPS-based system are the most…
In the March/April issue of Inside Motorcycles, I talk about the increasing availability of reasonably priced GPS-based data acquisition systems, and using data to improve your riding. GPS provides accurate position data, from which useful data such as segment times, ground speed, lateral acceleration, longitudinal acceleration and much more is…
Almost all on-road motorcycles are fuel injected now, but we are still behind the automotive world when it comes to the induction side of the four-stroke engine. More and more cars are fueled by direct injection - with fuel injected right into the cylinder - while motorcycles make do with…

At the Tokyo Motor Show late last year, Bridgestone introduced a non-pneumatic, or airless, concept tire. Comprised of a strip of rubber tread bonded to a structure of thermoplastic resin spokes, the airless tire is similar in concept to the Michelin Tweel introduced several years ago. An obvious benefit of…
Even though traction control and ABS have only recently become more prevalent on sportbikes, it's been 20 years since those particular riding aids were introduced. Traction control was first used on Honda's ST1100 in the early '90s, while ABS first appeared on BMW's K100 in 1988. Much of that delay…
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