One of the great privileges which holding a MotoGP media pass allows is to stand behind the armco and watch and listen to the bikes as they go past. At the Sepang test, I made full use of that opportunity, and wandered over to Turn 3 – the glorious, fast right hander, where the riders get sideways driving through the turn and onto the short straight to Turn 4 – to enjoy the spectacle of the best riders of the world showing off their skills.
There is more to be learned from watching at trackside than just how spectacular MotoGP bikes are through fast corners, though. The careful observer can pick up clues to what both the riders and factories are doing. With electronics such a key part of MotoGP nowadays, the track is one of the few places where updates are visible.
Updated vehicle dynamics algorithms may be invisible from pit lane (or nearly so, with the occasional addition of sensors or torque gauges the only visible clue), bike behavior on the track will sometimes betray them.
At the end of 2013, Marc Marquez and Dani Pedrosa had asked for more stability under braking, and some more corner speed. Listening to the bikes at Sepang gave a possible clue as to how they had achieved that. The differences in engine note between the various bikes were instructive of the varying levels of electronics, engine braking strategies, and gearbox function.
That Honda have been working on braking and corner entry was audible at Sepang. Though the RC213V always sounded smooth under braking, braking for Turn 4 the improvement was noticeable.