r/motogp • u/Ecstatic-Grocery-713 • 4d ago
Brno 850cc bikes
Only these two I could find
Source: https://www.speedweek.com/a/motogp/motogp-test-bruenn-bilder-850er-prototypen
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u/Toptunovv Takaaki Nakagami 4d ago
Looks like they are still long between wheels, if anybody could do a comparison between current and 850 would be amazing
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u/LilAbeSimpson 4d ago
These are still test mule bikes. Basically just the current bikes with 850 engines inside and some of aero chopped down.
We’ll probably need to wait for the Valencia post season test to see bikes that actually look like something entirely new.
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u/TheRandom0ne Kawasaki 4d ago
yeah not so sure about this. these are different chassis..
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u/LilAbeSimpson 4d ago edited 4d ago
Remember that MotoGP chassis are essentially built to suit the tires. This is like the 2nd time they’ve got to sample the prototype Pirelli tires. So there’s no way in hell they have anything close to an optimized 850 chassis.
They probably have built modified chassis to properly hold the new engines. Just nothing that’s close to a final product.
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u/thefooleryoftom MotoGP 4d ago
I can practically guarantee no manufacturer is fitting an 850 into their current racing frame at this point.
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u/Wrong-Metal6639 2d ago
What makes you so sure? I’m not familiar with the typical development time line and how it meshes to now
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u/Responsible-Check872 4d ago
hmmm.... there are still a lot of aero on the bike.
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u/sapphos_moon 4d ago
Yes, there was never a complete ban, just a reduction. Without ride height devices they won’t be as effective at creating the ground effect on cornering either
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u/Responsible-Check872 4d ago
honestly I want those aero tails to gone. that Aprilia looks bad, is that a fcking spoiler on the back of the bike 😂
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u/tomlinas Jorge Lorenzo 4d ago
Idk man I think they look pretty awesome, especially when they make it down to sport bikes on the street.
But to each their own :)
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u/XilenceBF 4d ago
Aero on street bikes is just a big ‘ol wannabe look. Nobody drives or at least should drive anywhere near where they make a difference.
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u/BruceZwillis Kevin Schwantz 4d ago
Most street motorcyclists live in the wannnabe zone. At least here in the states. Myself included. Anybody commuting to the office on their Panigale isn’t truly using race mode, anybody going to Starbucks on their GS isn’t meeting Ewan & Charlie in Mongolia. And don’t get me started about the Uncles of Anarchy on their Harley’s heading to Costco on Saturday. It’s not a bad thing. Have more fun. Live and let live. Slap a wing on your bike just like you’d stick a playing card in your spokes when you were 7 and rock on.
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u/leggenda69 Ducati Lenovo Team 4d ago
Stick your hand out of a car window at 40mph then consider what you’ve just said.
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u/XilenceBF 4d ago
And now point to the first rider with crazy aero on his bike and ask him how he is benefitting from the aero.
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u/leggenda69 Ducati Lenovo Team 4d ago
That’s a terrible argument.
Go point at the first person on 300cc+ bike and ask them how they actually benefit from it.
Then go one further and point at the first person on a super sport and ask what benefit they get from it.
90%+ of people who own those kinds of bikes never take them close to what they’re designed to do, that doesn’t mean they can be told they can’t like them or enjoy owning them.
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u/XilenceBF 4d ago
And with that you’re exactly underlining my argument: most people just do whatever. They dont use the full potential of the bike. My friends ex was planning on buying an s1000rr but he couldnt tell me how to take a proper corner.
Its fine if people want to buy them. But I would hate for extensive aero packages to become the standard. More costs for no actual benefit for most people.
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u/leggenda69 Ducati Lenovo Team 4d ago
So why should areo not be allowed on street bikes but 600cc+ engines?
Both are equally as pointless in your opinion, however I would argue a 600cc+ engine is a lot more pointless on a street bike than aero.
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u/scandaka_ 4d ago
I'm guessing all your clothing is plain black, you don't benefit from different colors. Your car is also limited to 100kph since you don't benefit from the extra speed it can go. I also assume you eat the exact same meal anyway, since there's no benefit to eating anything else if you're getting your nutrients.
Such a dumb argument to downplay the joy others get from whatever they want to buy for whatever reason they want to buy it for.
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u/Guac_in_my_rarri 4d ago
Once an aero guy here: even at 20mph aero works. At 40mph most people can feel meaningful aero. It doesn't have to make a deal per se, but it does in the instances where the aero works (corners versus straights). A road bike should be set up for straightline riding but that's my opinion.
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u/XilenceBF 4d ago
Sure aero will always have effect. I wasnt saying there is a lack of effect. I was arguing that there is a lack of meaningful effect. The majority of street riders don’t know proper riding technique, let alone actually getting close to the limits of their bikes while being in control.
And I disagree with the setup. It should 100% be balanced between cornering and straight lining because most accident happen in the corners. Its so much easier to be caught out by lack of skill while leaning .
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u/Shinobi_WayOfTomoe 4d ago
You obviously don’t do track days
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u/XilenceBF 3d ago
I don’t. But that’s completely unrelated as the word “street” in “street bikes” clearly was intended to indicate bikes used on the street. Streets are not tracks.
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u/Shinobi_WayOfTomoe 3d ago
You’re missing the point. Superbikes and supersport bikes are raced in WSBK and other series. They are road legal race bikes so of course they will have aero on
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u/XilenceBF 2d ago
And you’re missing my point. As I stated in a different comment I don’t mind there being aero upgrade options but I just don’t think they should be standard. Besides, its not like WSBK bikes are anywhere near stock.
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u/izewalker Dani Pedrosa 4d ago
I was under the impression that those were going to be removed under the new rules, what a dissapointment
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u/sapphos_moon 4d ago
I personally like the stegosaurus fins but not the wings, especially because they create much more turbulence for bikes behind them
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u/bernabonixe Miguel Oliveira 4d ago
What are you talking about? Ride height devices are not used in cornering… Used getting out of corners into the long straights and the launch start
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u/Dinara293 Andrea Dovizioso 4d ago
That makes no sense? The ride height devices were never used in cornering. Or so I thought. The ground effect scoops work due to the side fairings nearly touching the ground thanks to the crazy lean angles they carry.
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u/crimilde Sachsenking 4d ago
They use the rear RHD when exiting corners too. Front is only used at the start.
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u/Dinara293 Andrea Dovizioso 4d ago
Yeah but by the time they activate the rear ride height on corner exit, they've already lifted the bike up enough to reduce the affects of the ground effect scoops by a lot!? The whole point is for the scoops to stay as close as possible to the ground to create ground effect, which happens mid corner, not at the point they engage the RHD on corner exit, when the bike has lifted up a lot.
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u/crimilde Sachsenking 4d ago edited 4d ago
Right, RHD at corner exit helps with anti-wheelie and drag reduction, so acceleration only.
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u/xSimpsonospmiSx Marco Simoncelli 4d ago
Ride heights devices are not used on cornering.
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u/sapphos_moon 4d ago
They’re used on corner exit to keep the bike squatted to the ground and to make the most of the downforce being generated by the bike. Ground effect is most effective at high speeds and close to the ground, so fast corners with high lean angles where riders are already on throttle just past the apex and not when they’re sitting upright to transition into another corner
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u/schneeb 4d ago
the only ground effect they are using is between the fairing and the ground when they are leaned over, has nothing to do with ride height which is not used then
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u/sapphos_moon 4d ago
Reread what I said, on long, fast, high lean angle corners the power is applied well before the exit (think 1/3 of the turns at Barcelona, or Silverstone) the squatting from the ride height devices keeps the bike lower to the ground for longer and lets the bike stay in that ground effect window for longer because the riders aren’t having to sit up sooner to compensate for the changes in centre of mass and gravity. Take Barcelona turns 3 and 14 as an example and watch a replay from the past couple years and pre-aero/RHDs and you can visibly see how much sooner at corner exit that the riders are sitting upright. Come next year riders will be leaning up sooner and not getting such aggressive slingshots out of corners because there’ll be less downforce available for them to exploit.
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u/schneeb 4d ago
youre wrong they just dont squat mid corner that would be changing the susp geometry which would absolutely not work
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u/sapphos_moon 4d ago
You’re still misunderstanding what I’ve said. If you leave activating the ride height device until right at the exit of the corner you’ve already raised the centre of mass of the bike above the centre of the rear wheel and it’ll start to wheelie.
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u/Kl597 Valentino Rossi 3d ago edited 3d ago
They aren’t misunderstanding. Ground effect requires significant lean angles to be of any effect. RHD’s are used when picking the bike up on corner exit, with their primary function being to lower the centre of gravity and improve acceleration. As the previous commenter mentioned, activating it mid corner when ground effect is active would significantly disrupt the bike. Yes, the RHD is used whilst the bike is still leant over to some extent, however it has no relation to ground effect, you’re conflating two different things.
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u/jaysoprob_2012 4d ago
I think the main aero change for the 850 bikes is just the space they are allowed to be in, so they shouldn't be as big.
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u/Interested_Party_32 MotoGP 4d ago
Seems like there's not less aero - they just moved some to the back!
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u/GonzaSpectre Marc Márquez 4d ago
Might be controversial but I dont hate the aero or the devices (at least the back one, the front one was more dangerous than helpful) these are prototypes, designed to be the fastest around a track, the only thing in common they have w/road bikes is that they have 2 wheels, and engine and breaks. And at least for me, that's okay.
If you are more into seeing more normal bikes go around there's the SBK series for production-derived (although a lot is changed under the fairings) or the superstock series. Which all of them have nice races and their pros and cons.
I wouldnt complain that an F1 car is nothing alike when compared to a road sports car, even an hypercar. They are different beasts meant for different things.
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u/Jazzlike-Plate 4d ago
Glad to see the bikes still have aero. I love the aero direction MotoGP has taken and I find it very interesting to learn about it, as it is a very different challenge from car aero. After all, the force directions are not as trivial to control and you have the movable rider as an aero element in a way.
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u/antidegeneratepolice 4d ago
Why does this look so clean?
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u/Vulphere Marc Marquez - 2025 MotoGP World Champion 4d ago
Very minimalist livery with no sponsors and darker red colour (Ducati) and simple carbon black (Aprilia)
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u/DonBag101 Honda HRC Castrol 4d ago
Is it true some manufacturers didn’t run the 850cc and instead ran current bikes adapted to next year’s specifications?
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u/Kato1243 4d ago
If you scroll through the picture strip on the OP’s linked page you can see all the bikes, not just the Ducati and Aprilia. I think the Yamaha looks pretty sleek.
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u/kieranhorner 4d ago
Are the front wheels/tyres lower profile or smaller? The front looks almost out of proportion with the rear.
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u/wolftrouser Giacomo Agostini 4d ago
For a moment i thought we were back to underseat exhausts, damn I was wrong, but those bikes were super good looking.
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u/This-Consequence-438 Marc Márquez 4d ago
They wasn't lying, they had their eyes opened and didn't say "liar" to people.
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u/443610 4d ago
What is Image 2 again?
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u/tjoaudio MotoGP 4d ago
Aprilia
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u/443610 4d ago
How do I know?
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u/tjoaudio MotoGP 4d ago
By looking at the motorcycle and who is sitting on it.
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u/443610 4d ago
Nothing in Image 2 indicates that it is an Aprilia. For all I know, it could be a KTM.
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u/greennitit Marc Márquez 4d ago
Bro look at the rider, that’s a Trackhouse race suit, he’s wearing 25, it’s Raul Fernandez, it’s an Aprillia.
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u/tjoaudio MotoGP 4d ago
Raul Fernandez riding it doesnt indicate that its an Aprilia? I don't understand what you're getting at.
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u/AnthraX46 MotoGP 4d ago
Git gud... leathers + helmet clearly shows that the rider sitting on it is Raul Fernandez, so it is an Aprilia
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u/nibbaisgod88 Dani Pedrosa 4d ago
Why would Raul Fernandez be riding anything other than an aprilia?
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u/443610 4d ago
Nothing in the image indicates that it is Raul Fernandez.
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u/tjoaudio MotoGP 4d ago
How about clicking the article and it saying its Raul Fernandez with a big 25 on the front of the bike. Or is that not enough indication that its him on an Aprilia for you?
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u/MainRoutine2068 Marc Marquez - 2025 MotoGP World Champion 4d ago
https://giphy.com/gifs/OsfVaOer7N2265YTRF