The carbon fiber covered chassis on the Honda RC213V test bike used by Stefan Bradl
David Emmett: This was the talk of the Jerez weekend. Stefan Bradl had two bikes at his disposal, this one, featuring a different chassis design (see the scalloped section in the center of the main beam), and the standard aluminum chassis. After Honda spent the winter working on the engine of the RC213V, they are now diverting their attention to the chassis. Riders have complained of a lack of front end feel from the 2019 frame, and this seems to be an experiment to create a bit more feel, especially on corner entry and mid corner. Marc Márquez tested this chassis at Jerez on Monday, and set his fastest time on the bike.
Another view of the carbon fiber covered chassis on Bradl's RC213V
David Emmett: A view of the full frame. The welds appear to be in the same place as the standard frame, but the top beams are different.
Ducati GP19 swingarm attachment
Peter Bom: The now (in)famous aerodynamic modification on the Ducati, which they claim channels extra air onto the rear tire, which keeps it cooler and improves performance. Since its introduction, we have also seen a similar device on the Honda RC213V, and we expect to see more at Jerez.
Ducati “triple winglet” fairing on the Desmosedici GP19
Peter Bom: A tri-plane winglet arrangement must have quite a lot of horizontal surface area. By spreading that surface area over three wings, Ducati also reduces the risk of damage in case of contact with other bikes. Bikes with as much aero as the Ducati can barely be ridden at all without it any longer.
Knee pads on Jorge Lorenzo’s Honda RC213V (Friday night)
Peter Bom: Jorge is obviously still working on something he feels is very important: the ergonomics of the motorcycle. Here, and below, the contact points on the fairing which he is apparently using to support himself on the bike while riding.