Tom's Tech Treasures: A Look Back To The 2019 Valencia Test

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. Peter Bom is a world championship winning former crew chief, with a deep and abiding knowledge of every aspect of motorcycle racing. Peter has worked with such riders as Cal Crutchlow, Danny Kent, and Stefan Bradl. After every race, MotoMatters.com will be publishing a selection of Tom's photos of MotoGP bikes, together with extensive technical explanations of the details by Peter Bom. MotoMatters.com subscribers will get access to the full resolution photos, which they can download and study in detail, and all of Peter's 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.


Honda RC213V 2020 prototype (Marc Marquez)
David Emmett: You can tell this bike belongs to Marc Márquez by looking at the rear brake disc. The ventilated disc is a sign that it gets heavy use, and needs a lot of cooling.
This was one of the prototypes used by Márquez at Valencia, but the chassis is a tell that this was just being used to test the new engine. The frame still has the engine mount spar above the clutch (the section the fairing is attached to, by the bolt just behind the R of Repsol). At Valencia and Jerez, Márquez tested a chassis without that bolt, giving the frame a little more flex.


Suzuki GSX-RR engine and frame
Peter Bom/David Emmett: The serial number on the frame is a giveaway: This is a 2019 bike. Though it is also a sticker, and stickers are easy to remove and attach. A few things worth looking at here: the water pump below the swingarm pivot, tucked neatly out of the way, helps keep the engine narrower. Suzuki has its own version of the torductor, or torque sensor, on the output shaft: the yellow cable coming out of the black cap on the sprocket. You can also see a movement sensor on the rear shock, measuring how much it compresses and extends. If you look at the exhaust pipes, the front has insulation padding to protect the fairing. Always a sign that there is very little space between the fairing and the exhaust.


Honda RC213V 2020 smaller carbon cover (upper frame) To see the technical explanation for this photo, sign up to be a site supporter.


Air duct on the Honda RC213V 2020 (close up) To see the technical explanation for this photo, sign up to be a site supporter.


Engine of the 2020 Honda RC213V To see the technical explanation for this photo, sign up to be a site supporter.


Yamaha M1 vented rear mudguard (used since 2018) To see the technical explanation for this photo, sign up to be a site supporter.


An unusual item on the underside of the fuel tank of the Aprilia RS-GP, which appeared in the second half of the 2019 season To see the technical explanation for this photo, sign up to be a site supporter.


Swingarm attachment on the Suzuki GSX-RR, note the tape on the leading edge! To see the technical explanation for this photo, sign up to be a site supporter.


The left handlebar on the Ducati To see the technical explanation for this photo, sign up to be a site supporter.


Two inspection windows = new engine on the Suzuki To see the technical explanation for this photo, sign up to be a site supporter.


Steering damper on the 2020 KTM RC16 To see the technical explanation for this photo, sign up to be a site supporter.


The tail of the 2020 Honda RC213V To see the technical explanation for this photo, sign up to be a site supporter.


New Yamaha M1 frame for 2020 To see the technical explanation for this photo, sign up to be a site supporter.


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Comments

Suzuki has used dual sight windows in their dry-clutch engines since at least the 1990's. Ive got two of them here- one has it and one does not.

Kit manual states this is for viewing oil level with engine off vs. engine running. No explanation of why.

I really really love this section. Can't get enough of the pictures and detailed explanations. Thanks