Torque sensor on the Yamaha M1
Peter Bom: Like all current MotoGP engines, the Yamaha M1 has a torque sensor fitted to the drive shaft. By measuring the amount of torque delivered on the track, the manufacturer can validate their engine dyno torque maps and fine tune them on the track. Note that Yamaha don’t use them on Sunday, that’s when everything should be sorted out. Left of the sprocket is an ‘inside-out’ or inverted sprocket which the external starter motor slides into.
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.
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.
Another new feature on the site starting this week. After every round of MotoGP, the immensely talented Cormac Ryan Meenan of CormacGP will be supplying a selection of photographs from that weekend's event. If you'd like to see more of his work, you can follow him on Twitter or Instagram, or check out his website, cormacgp.com.