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Formula 1 2025

Mactech said:
As so often in motorsport, the V4 engine itself is not the 'holy grail' but the ability to package the modern MotoGP around it. A V4 Yamaha will be a completely new bike. There is nothing wrong with either power or power delivery of the inline 4. It's just that with the addition of ride height devices and aero the engine width does not allow it to be mounted as low in the bike as the narrower V4.
If you ever get to see in the engine bay of and F1 car, the V6 engine is a tiny jewel of a thing packaged very low and mostly hidden.
Click to expand...

Besides the packaging benefits, is there not some traction advantage from the uneven torque impulses that a V4 produces but then didn't they try to achieve the same thing with a cross plane crank in line 4. Seems to me like there must be a whole set of complex compromises in both engine layouts. Bottom line though is the V4's are winning races.
 
Yes, I think in its raw form there is a traction advantage with the V4. However, it does seem that a combination of firing order and traction control has all but eliminated that advantage in the modern MotoGP world. I understand that packaging, weight distribution (and hight) are have come to the fore, as things that cannot be controlled electronically.
It would be another discussion as the whether the ride height devices are electronically controlled....but I think it was this device which opened the up the in-depth probing of the advantages of lowering C of G and it's shift. The traction advantages are certainly visible to the naked eye.
 
www.crash.net

2025 Official Buriram MotoGP Test Results - Day 2 (Thursday)

Lap times as of 5pm during Thursday’s second and final day of the 2025 Official Buriram MotoGP test.
www.crash.net www.crash.net

With the pre-season testing now done, what can we conclude? Remembering 'it's only testing' Marc Marquez looks to be in a very strong position.
Not only was he the only one to dip into the 28's in time attack mode, but his average over a 24lap race sim was 30.3.
There is nobody else within a second of this if they completed that number of laps:eek:
 
Mactech said:
It would be another discussion as the whether the ride height devices are electronically controlled....but I think it was this device which opened the up the in-depth probing of the advantages of lowering C of G and it's shift. The traction advantages are certainly visible to the naked eye.
Click to expand...
I'm curious - what is/are 'ride height devices'?
The height of the CoG of a bike doesn't (beyond ground clearance concerns) influence cornering. Traction, braking, and keeping the front or rear wheel on the tarmac are however influenced by CoG height. Is that what this is about?
 
Bellow said:
I'm curious - what is/are 'ride height devices'?
The height of the CoG of a bike doesn't (beyond ground clearance concerns) influence cornering. Traction, braking, and keeping the front or rear wheel on the tarmac are however influenced by CoG height. Is that what this is about?
Click to expand...
Yes, absolutely. The bikes launch with the lowest possible ride height. The riders brake hard up to the grid to engage the front lowering lock. Think long wheelbase drag bikes. There is a huge performance advantage here.
As the bike pitches under acceleration or brakes, the control system / rider can lock or unlock these systems to allow 'normal' ride height for lean angle. On corner exit the rear ride height device lowers to reduce the C of G and aid traction. This also reduces the frontal area to increase Vmax.
 
Mactech said:
As so often in motorsport, the V4 engine itself is not the 'holy grail' but the ability to package the modern MotoGP around it. A V4 Yamaha will be a completely new bike. There is nothing wrong with either power or power delivery of the inline 4. It's just that with the addition of ride height devices and aero the engine width does not allow it to be mounted as low in the bike as the narrower V4.
If you ever get to see in the engine bay of and F1 car, the V6 engine is a tiny jewel of a thing packaged very low and mostly hidden.
Click to expand...
I have seen ‘under the hood’ of F1 cars (though not for over a decade) and I’m always impressed by the packaging. Gordon Murray was obsessive with this aspect when he was at McLaren.
 
Mactech said:
Yes, absolutely. The bikes launch with the lowest possible ride height. The riders brake hard up to the grid to engage the front lowering lock. Think long wheelbase drag bikes. There is a huge performance advantage here.
As the bike pitches under acceleration or brakes, the control system / rider can lock or unlock these systems to allow 'normal' ride height for lean angle. On corner exit the rear ride height device lowers to reduce the C of G and aid traction. This also reduces the frontal area to increase Vmax.
Click to expand...
Out to launch.
Marc Marquez does a practice start with maximum 'lowth' on his works Ducati 24.5 (ish!) on the final day of testing prior to MotoGP 20125.
It looks like Ducati will start the season with a 25 spec bike, but featuring a 2024 engine, frame and possibly aero, hence 24.5 bike.....:dk:

Image.jpg
 
HappytalkAgain said:
On tonight 8-10pm. 👍

www.skysports.com

F1 75 Live: 2025 season launch at London's O2 on Sky Sports - date, car liveries, drivers, and celebrity performances

Watch F1 Live 75, Formula 1s first-ever all-team launch - featuring all 20 drivers from the new-look grid and the reveal of the 2025 car liveries - live on Tuesday February 18 on Sky Sports F1
www.skysports.com www.skysports.com
Click to expand...
I must admit I was somewhat sceptical and thought it may be just a bunch of floss.
Turned out to be a very spectacular event with equal amounts of humour, staggering laser lighting, music, sound....oh! and some F1 cars.
It certainly wasn't something just thrown together and I hope the racing this year lives up to the (considerable!) hype.

www.bbc.co.uk

Lewis Hamilton says he is 'invigorated' by Ferrari move at F1 75 season launch event

Lewis Hamilton says he feels "so full of life" because "everything is new" at his first public event as a Ferrari driver.
www.bbc.co.uk
 
Last edited:
Bellow said:
I watched WRC highlights - and saw a Brit win the Swedish Rally and lead the championship by 28 points. Congrats Elfyn Evans.
Click to expand...
I met Elfyn quite a few times when I was working up at M-Sport in the Lake District where we built the GT3 Bentleys. There were countless rally Fiestas on the other side of the workshop. Elfyn was a quiet, unassuming lad almost always in overalls and working on the cars, but also driving very quickly on rallies at the weekends. I introduced them to the idea of having a 'function checklist' instead of just taking the rally cars up the road for a blast to see if 'they felt right'.....

IMG_0640.JPG
 
Mactech said:
. Elfyn was a quiet, unassuming lad almost always in overalls
Click to expand...
Pretty much as he is in current times!
Mactech said:
also driving very quickly on rallies at the weekends.
Click to expand...
Pretty much as he is in current times!

(10 WRC rally wins and runner up in the championship four times - yet he's virtually unknown in Britain. The invisibility of Welshness).
 
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