Tom's Tech Treasures: Carbon Frames And Aero Updates From Jerez

Thomas Morsellino is a French freelance journalist and photographer, with keen eye for the technical details of MotoGP bikes. You may have seen some of his work on Twitter, where he runs the @Off_Bikes account. After every race, will be publishing a selection of Tom's photos of MotoGP bikes, together with technical explanations of the details. subscribers will get access to the full resolution photos, which they can download and study in detail, and all of the technical explanations of the photos. Readers who do not support the site will be limited to the 800x600 resolution photos, and an explanation of two photos.

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.

Bradl's standard Honda RC213V aluminum chassis

Ducati GP19 front wheel cover with brake cooling ducts (Danilo Petrucci’s bike)

Yamaha YZR-M1 swing arm attachment

Aprilia RS-GP swing arm attachment

Speed Up carbon swing arm used in Moto2

Honda RC213V "bento box" on Stefan Bradl's bike

ECU cooling system for the Aprilia RS-GP

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How long before somebody gets an enormous duct running from the ECU to below the radiator, and uses an overpowered fan to suck the bike downwards and counteract wheelies?

No doubt a horrible idea for many reasons, but I'm wondering what other nonsense one could get up to with fans and aero, while ostensibly just cooling the electronics...

The Bradl Honda is beautiful. Bento box and all. Neat that theybare altering chassis flex via carbon fiber overlay, very crafty tuneability.

The Ducati continues to look like cr*p under 50mph or closer than 50 ft. But I love it anyway, and hope it shines in France where we can finally see the 2019 do its thing. Anyone have a picture of the special livery yet? Anyone not tipping Dovi for a podium?

Aprilia makes a very lovely and slow bike. Iannone and it have something unfortunate in common this year.

Loving these Powered By Triumph Moto2 bikes!! Dreams of a low electronics-dependent 1165 Triple Superbike won't leave my mind. Yamaha, Triumph and MV Aug have platforms workable conceptually. Anyhoo, great pictures - thanks!


That's it?
That isn't "special livery," that is "we had to omit our major sponsor because it is still a nicotine product."
Ah well.
The Duc is going to rip this weekend

Thanks Tom & David awesome images and informative captions. the tech changes so much, so fast!

Even Moto2 bikes have spacerocket technology.