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).
On the track, racers are either on the throttle or on the brakes – no free wheeling – this wastes time. Trail braking is a technique which racers use to slow the bike as quickly as possible from one speed (on the straight) to another (corner apex speed). In applying this technique, a racer will approach a turn and at their braking marker, apply full braking force, normally with the bike being upright. As the rider begins to turn in, they reduce brake pressure, easing off the brakes. Decreasing or “trailing” the brake lever force as the bike lean angle increases until they gets to the apex, the rider then releases the brake and applies the throttle.
There is a weird phenomenon as one gains experience on a motorcycle in regards to the usage of the rear brake. As novice riders, we are taught to use the rear brake in conjunction with the front brake, and in rider training courses like the one put on by the MSF, this is a skill that is practiced out on the range. As a rider’s skill set on a motorcycle improves though, a new love affair is found with the rear brake. Talk to any professional motorcycle racer about their rear brake, and you will begin to realize there is a huge role that the rear brake plays in bike stability, which at times makes no sense to a layman — something exemplified by Casey Stoner’s frequent use of the rear brake while also hard on the throttle. Not quite diving that deep, here’s a video that explains why you should fall in love again with your rear brake.
Whether your Sunday mornings are spent watching the AMA, BSB, WSBK, or MotoGP Championships (bonus points if nodded for each one of those), the image of watching a motorcycle lift its rear-wheel off the ground under heavy braking is surely a common occurrence to you. For amateur racers, the experience can be a bit unnerving at first, and even the professionals sometimes miscalculate the available traction, braking distance, and entry speed associated with such a maneuverer. Such was the case with one Brazilian Superbike racer, who found himself on the wrong side of an endo, and headed into slower traffic at a corner’s entry point.
Brembo has released a list containing the Top 10 late-brakers at the Italian GP in Mugello. Taken from teams’ telemetry from the Qualifying Practice, Brembo compiled the list based off who was applying the most braking force coming off the front straight-away, and into Turn 1. Of note, the list was based off only teams who use Brembo brakes, which means LCR Honda and San Carlos Gresini Honda were left off the list (they use Nissin), we therefore don’t have data for Toni Elias, Hiroshi Aoyama, and Marco Simoncelli.
The San Donato bend at Mugello sees riders slow from 203 mph coming down the long straightaway to 75 mph into the apex of the first turn. One of the first tracks on the MotoGP calendar, Mugello recently repaved its course, meaning the Italian track has become especially smooth and grippy, and under the weekend’s sun, it was warm and ready for MotoGP action. Make your guesses now as to whom was the King of the Brake Lever, and check your answers after the jump.
Founded in 1911, Benelli is celebrating its 100th year anniversary at EICMA this year with special “Century Racer” versions of its Tornado Naked Tre (TnT), the company’s naked three-cylinder street bike. The Benelli TnT 1130 “Century Racer” (a Benelli TnT 899 “Century Racer” is also being made available) features a desaturated green color scheme that honors Renzo Pasolini, and will be on display at the show in Milan. Along with the Century Racers, Benelli will have an exhibit that traces the company’s motorcycling history throughout its years. More details about the company’s 2011 model line after the jump.