2025 Silly Season

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Very interesting article by Oxley, on the Misano test.

Michelin mandated a 30 min testing of their new front tyre. The tyre might be able to put the front pressure genie back into the bottle again, due to the size, shape and construction.

It could make breaking hard easier, less heated by the bike in front, and make it less agile. Bagnaia loves it, Marquez is more reserved. Either way, it'll suit the Ducati.

Aprilia unveiled a rider-sensor data system, to be able to learn how their riders move on the bike, during a lap. They can already see where the load on the bike is, but not how the rider distributes that load. This knowledge can in turn be used to better aero development.
 
Sennas_Caress said:
Aprilia unveiled a rider-sensor data system, to be able to learn how their riders move on the bike, during a lap. They can already see where the load on the bike is, but not how the rider distributes that load. This knowledge can in turn be used to better aero development.
Click to expand...
Viñales said that they have a problem of too much load on the rear durnjbg cornering, which is affecting lap times.

This might be a step towards analyzing it.
 
synn said:
www.motorsport.com

Yamaha's development of V4 engine for MotoGP bike in advanced state

www.motorsport.com www.motorsport.com

Wow. Bombshell.
Yamaha IS working on a V4. Presumably for 2027, but I’m guessing they might want to roll it out in 2026 with the 1000cc displacement just to iron out the kinks (And consider the next few seasons purely developmental).

I did wonder if this was the REAL reason for contracting Luca Marmorini.
Click to expand...


Will we see the Yamaha V4 next year?
I highly doubt it.
 
synn said:


Will we see the Yamaha V4 next year?
I highly doubt it.
Click to expand...


I find it difficult to believe that Yamaha will be able to switch to a V4 engine and immediately have an optimised package. Sure, regulations are changing quite a bit in 2027, but I would predict that Yamaha will still be in catch-up mode.

synn said:
Click to expand...


Finally the rumours I posted before have become fact.
 
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If there is an engine freeze in 25 & 26, then most likely every satellite team and their dog, will have the best engine available to them in 26.
More focus on the electronics, more focus on the aero.
The data collected in 25 will help everyone in 26.
Will every team be allowed the latest aero?

26 could turn out to be the year in MotoGP
 
synn said:
Unless they do the switch next year and then use the next 3 years as a developmental bed.
Click to expand...
Wouldn't the engine freeze as described above not stop that? I can't read Twitter, and hence can't see if there is anything more written there about an engine freeze.

PRS717 said:
Holgado and Alonso make a formidable team.
Click to expand...

Even Moto3 champions sometimes take some time to adapt. Sometimes it seems to me that Moto3 -> Moto2 takes longer to adapt to than Moto2 -> MotoGP. (E.g. Acosta, Marquez).

But, I agree that the team has formidable talent. Experience will follow.
 
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I can't see Yamaha developing a 1000 V4 to race for two years then a 850 V4 for 2027.
Because of the change in bore size they can't just reduce the capacity of the 1000 down to 850, they would be two different engines.
Probably they will develop a 850 V4 now for the 2027 series.
 
Havey said:
I can't see Yamaha developing a 1000 V4 to race for two years then a 850 V4 for 2027.
Because of the change in bore size they can't just reduce the capacity of the 1000 down to 850, they would be two different engines.
Probably they will develop a 850 V4 now for the 2027 series.
Click to expand...
The articles quoted above (in various places :) ) say that they might.
 
Havey said:
I can't see Yamaha developing a 1000 V4 to race for two years then a 850 V4 for 2027.
Because of the change in bore size they can't just reduce the capacity of the 1000 down to 850, they would be two different engines.
Probably they will develop a 850 V4 now for the 2027 series.
Click to expand...
Multiple sources have theorized that the current 1000cc V4s can be down sleeved to 850cc, as the stroke can remain the same.
 
synn said:
Multiple sources have theorized that the current 1000cc V4s can be down sleeved to 850cc, as the stroke can remain the same.
Click to expand...
Sure you can. but you would not do that if, you are going to race it.
The V4 850 engine is designed to win GP races.

Have a think about, the 1000 has a bigger bore so it will be wider across the block and crank shaft, the V4 850 with a smaller bore will be narrower across the whole engine.
 
Havey said:
Sure you can. but you would not do that if, you are going to race it.
The V4 850 engine is designed to win GP races.

Have a think about, the 1000 has a bigger bore so it will be wider across the block and crank shaft, the V4 850 with a smaller bore will be narrower across the whole engine.
Click to expand...
From everything I’ve read, and that includes opinions from the technically inclined, the size advantage of an all new V4 would be negligible going from 1000 to 850cc. Which is why they are of the opinion that all new engines will not be developed by the V4 manufacturers.

It would be significant for an inline 4, which is already quite wide.

Either way, time will tell which approach the manufacturers take.

The last time a manufacturer significantly changed their engine layout was Aprilia going from a 75 degree V to 90 degrees (Also developed with inputs from Marmorini) and it took them only 1 year to be competitive. Yamaha will have considerably more resources at their disposal than Aprilia, I’m sure.
 

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