Tom's Tech Treasures: A Detailed Look At What's New At Aragon

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, will be publishing a selection of Tom's photos of MotoGP bikes, together with extensive technical explanations of the details by Peter Bom. 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.

KTM RC 250 R engine (Moto3)
Peter Bom: This engine is tilted backwards for cleaning and maintenance. Note the (orange) caps that keep dirt out of the inlet / exhaust ports during transport and cleaning. The aluminum box on the left is the water / oil intercooler. Here, instead of using an oil cooler, the water from the radiator cools the engine oil.

Gyroscopic sensor on the Ducati fork
Peter Bom: A two-axis acceleration sensor fitted close to the wheel axle of the front fork. Measuring the acceleration forces inline with the fork, together with the suspension stroke sensors, gives the engineers a clear view of the damping qualities of the front fork. The 2nd axis measures the lateral forces that will show understeer.

Dell’Orto ECU used in Moto3 and Dorna unit used for TV
Peter Bom: Note the difference: all the ‘not so neatly’ fitted electronic boxes are there for Dorna TV coverage. Not all bikes in Moto3 have to use them, it’s the price of being successful…

Cooling system to cool down the caliper (Yamaha M1)

Aerodynamic cover on Danilo Petrucci’s Ducati GP18 front fork

Carbon swingarm on the Aprilia RS-GP. That part has been used on and off since Austria (the first time Tom Morsellino saw it)

Ventilated mudguard on the Yamaha M1, appeared at Barcelona

Honda RC213V carbon swingarm

Cooling system for the rear brake caliper (Marc Márquez)

Carbon/aluminum top triple clump on Ducati GP18

Brembo bake system (Honda RC213V)

If you would like access to the full-size versions of these technical photos and all of Peter Bom's explanations, as well as desktop-size versions of the other fantastic photos which appear on the site, you can become a site supporter and take out a subscription. A subscription will also give you access to the many in-depth and exclusive articles we produce for site supporters. The more readers who join our growing band of site supporters, the better we can make, and the more readers will get out of the website.

If you would like to buy a copy of one of thes photos, you can email Thomas Morsellino

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Content like this is so hard to find! Thanks for bringing it to me. in depth technical information is the reason I'm a site supporter.


Lovely pictures.

Are you sure the 250 engine is backward tilted? I suspect it is forward, but laying on its rear side. Bottom red plug might be for the output shaft? 

Oh my!
Porn. Rather hardcore at that. No polite fairings-on glances here...
You dirty boys, I love it.

This kind of detailed photography has been sadly missing for far too long - thanks for making this happen, Mr Emmett! And I'm quite pleased that the Moto3 (and hopefully Moto2) bikes are included.

Thanks for these.  Will make the bike nuts in our Friday team meeting very happy :)

I mush echo the comments ,very informative ,

I never realised how tall the Moto 3 

if they shortened it,built the gear box to the rear ,would it lower the headstock height?



-Fair bit of wear on that Aprilla rear sprocket.

-Interesting that the Honda chane adjuster to the aluminimum insert of the carbon fibre swingarm has a temperature logging sticker (up to max of 85°C). Suprised the axle would transmit that much heat... And a 520 RK chain is obviously good enough for 270 hp plus :)



The image of the Ducati triple clamp, the description says its a carbon insert but there's not quite right. 

If you look closely you can see it's actually 3D printed (FDM).  Notice how the outer vertical surface has thick layers, thick enough to reflect the light individually.  The top left corner you can see where the resolution of the printer left a not-so-perfect edge. On the top surface, what looks like a carbon weave is actually individual rows that sit proud, creating ridges that catch the light.  That's for sure a printed component.  

Now, it's possible this part "could" be printed with a carbon-filled Nylon "Nylon-CF12" but to my eye it doesn't look like it.  CF12 parts don't look that smooth without post processing. 
My guess is this is a typical ABS printed part that is acting as a cover for something much more interesting with the clamp design and they would like to keep it secret from prying eyes.   

Great photos and attention to detail!  Keep it up!

The KTM Moto3 donk is oriented in the bike the way we see it in the pic. Cylinder head up near the steering head. I had a good look in a couple of garages. Chain on the right from memory. Exhaust at the front.

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