MotoGP

The first lap of the French GP worked out very well for MotoGP fans. First, Andrea Dovizioso accelerated past Marc Marquez, putting the pole sitter and race favorite into second position. Moments later Stefan Bradl passed Marquez on the outside, Marquez into third. As the pack entered the Dunlop Chicane, Pol Espargaro passed Marquez, putting 93 into 4th. Valentino Rossi passed Marquez at La Chapelle, 93 now in 5th. Jorge Lorenzo pushed past at Garage Vert, and Marquez went off track to rejoin in 10th place. Not a good start for the Championship leader, but a wonderful half first lap for fans. Instead of Marquez riding off into the distance, yawn, he had to work his way up from tenth place.

Bikes

The wait is finally over, as the Yamaha YZF-R25 has been revealed to the world, at a press launch in Indonesia. Based aroun a fuel-injected 249cc parallel-twin engine, which makes 35.5hp and 16.7 lbs•ft of torque, the YZF-R25 is Yamaha’s response to the newly revived 250cc sport bike category, which Honda and Kawasaki have been dominating, as of late. Built in Indonesia, and being released into that market in July of this year, Yamaha sees 12,000 units being sold worldwide in the next 12 months for the R25 — a number we suspect will grow as more markets added. Yamaha says that the YZF-R25 was designed specifically with the ASEAN (Southeast Asia) and emerging markets (India) in mind, which only piques our interest further about a 300cc model for the North American and European markets at a later date.

Columns

Nothing causes as much confusion or trepidation in riders as emergency braking. How hard can I brake? Will the front wheel lock? Will I go over the handlebars? How far can I lean over on the brakes? As a Motorcycle Instructor I am continually amazed at how many of our students, who have generally had some training and are licensed, come to us with inadequate braking skills. It’s super important to understand and regularly practice emergency braking on your bike. Normally I recommend a quiet car park with a slight up-hill. To understand braking we must first understand grip. The main contributor to grip is the weight or load on each tire. The ratio between the maximum possible grip and the vertical load is called the coefficient of friction (μ).