This is Tetsuta Nagashima’s HRC machine from the Japanese Grand Prix. There’s a cool detail here that we love and it’s that extra bit of metal that sits just behind the rear brake lever. There’s an extra piece of metal attached to the arm of the rear brake lever, this extra piece of metal is only there to be useful when the rider is leant over at high lean angles to the left and the rear brake lever is a bit of a stretch to reach. With this extra piece of meta bolted onto the arm, Tetsuta doesn’t have to stretch as far to be able to reach it
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If you’re more on the keen side of what tech can be seen on the bikes, you’ll probably have noticed this little electronic exhaust valve before. This one is seen here on one of the Pramac Racing Ducatis, but they can also be seen on the Aprilias too
The purpose of the electronic exhaust valve is to manipulate the flow of exhaust gases at certain points either to help increase the bike’s braking performance or to help the rider use the power of the engine better and to greater effect. They’re a clever little device but they are something that’s been around for quite some time. If you look back to images of bikes in the CRT era, many of them featured exhaust valves as they had to use every trick in the book to make up for their natural power deficit
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There are two things here that we wanted point out. The first is the change to the chassis that Marc has used since Japan onwards. He’s actually gone back to the standard 2022 chassis. The way we can tell is by the bolt of the swingarm pivot. Here we can see the chassis version that uses the big round nut, but previously Marc had used a version that doesn’t have this big round nut and just sits flush with the frame
The other thing here is the torque sensor that sits on top of the front sprocket. The torque sensor measures the turning force coming from the engine. As we understand, engineers can use the data gathered to pain tof picture of just how much torque their engine creates and how it relates to the other actions they see happening on the bike at that time; spinning, sliding, and the general feedback from the rider. It’s a useful tool to making turning the mountain of power that GP bikes have into something that’s rideable and useful to the rider
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This is the left handlebar of Joan Mir’s Suzuki, that was actually being leant to Danilo Petrucci at the time of this photo
You can see here the buttons that Joan has at his disposal. It’s likely these buttons are for engine brake, power mapping and traction control. You can also then see the two thumb levers Joan has. One is for the rear rideheight device and the other is for one of his holeshot devices
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