F1technical.net

Ringleheim wrote: ↑

22 Dec 2021, 08:04

Looks in to join discussion about wheel size...finds argument about titanium and its relative strength and God knows what else...quietly moves on to something else.

It's mostly about arguing here, isn't it? And at all chat forums.

LOL

From where I come it's called talking.

And it's not always that someone comes up with something to say exactly about the wheel rim size being 457mm.

FW17 wrote: ↑

22 Dec 2021, 08:49

Looks like car weight is increased by 3kgs for next year, will this weight and safety loop ever end?

It could, when they throw out the ICE part of the PU. And chop-off 1-1,5m of the cars to 4,5m or less, a classic length.

mclaren111 wrote: ↑

22 Dec 2021, 09:08

Same goes for the length...

The FIA's on it. ETA: 2050

JordanMugen wrote: ↑

22 Dec 2021, 12:24

I doubt that the likes of BBS, OZ Racing, Rays and so forth simply lack the data to realise they should have been making their racing wheels out of titanium alloy and not magnesium alloy all along! Titanium alloy racing wheels must therefore not stack up.

Most likely, I was just curious why.

JordanMugen wrote: ↑

22 Dec 2021, 12:24

TL;DR: The non-use of titanium alloy in racing wheels seems to be due its mediocre modulus of elasticity, rather than its extremely high tensile strength... Given the modulus of elasticity, titanium alloy offers no advantage over magnesium alloy.

Oh well. I also guess there's no-one to forge titanium wheels like they do for magnesium.

mzso wrote: ↑

22 Dec 2021, 23:42

FW17 wrote: ↑

22 Dec 2021, 08:49

Looks like car weight is increased by 3kgs for next year, will this weight and safety loop ever end?

It could, when they throw out the ICE part of the PU. And chop-off 1-1,5m of the cars to 4,5m or less, a classic length.

mclaren111 wrote: ↑

22 Dec 2021, 09:08

Same goes for the length...

The FIA's on it. ETA: 2050

EDIT: I was a derpy-mc-derpface and somehow missed this thread in my "spring-cleaning" of stickies... my bad

The 18-inch wheels were introduced into the Formula 2 Championship in 2020, to test what the changes to the tyre behaviour would likely be. It was originally proposed that the use of tyre warmers would be banned, but this decision was later reversed after opposition from Pirelli. Insteadm they're going to become a standardised piece of equipment and then eventually be phased out in 2024.

Particularly interesting to me, is the fact that the teams will have to run a flush wheel cover next season to minimise aerodynamic turbulence The new tyres grow from 660 to 720mm in diameter, but the tread width of 305mm at the front and 405mm at the rear isn't changing.

F1 also asked Pirelli to make rubber that’s less prone to overheating and can be pushed harder for longer... here's hoping...!

Do you have any data on the difference in weight?

I'd be curious to know more about the simulations and what they involved. For example is it 1000hrs of simulation (clock time) or 1000hrs of simulated time (time domain). The former sounds extremely low to me, while the latter actually sounds a bit high. I know a fair amount about numerical simulations but fairly little about tyre specific stuff.

Have they posted anything about temperature ranges as compared to previous compounds?

I'm confused because the tender said the front tyre treads would go to 270mm (with the rears staying 405mm) and the regs say the tyres are 725mm not 720mm...

_cerber1 wrote: ↑

08 Jan 2022, 14:19

Do you have any data on the difference in weight?

This is all I got

"They felt the weight of the tires. Each front rim is 2.5 kilograms heavier than the 13-inch and the rear is three kilograms heavier than the 13-inch tires, so they felt it while driving." Isola

Blackout wrote: ↑

08 Jan 2022, 14:37

_cerber1 wrote: ↑

08 Jan 2022, 14:19

Do you have any data on the difference in weight?

This is all I got

"They felt the weight of the tires. Each front rim is 2.5 kilograms heavier than the 13-inch and the rear is three kilograms heavier than the 13-inch tires, so they felt it while driving." Isola

Is that total corner weight or tyre weight? I imagine the former.

jjn9128 wrote: ↑

08 Jan 2022, 15:46

Blackout wrote: ↑

08 Jan 2022, 14:37

_cerber1 wrote: ↑

08 Jan 2022, 14:19

Do you have any data on the difference in weight?

This is all I got

"They felt the weight of the tires. Each front rim is 2.5 kilograms heavier than the 13-inch and the rear is three kilograms heavier than the 13-inch tires, so they felt it while driving." Isola

Is that total corner weight or tyre weight? I imagine the former.

https://www.autoweek.com/racing/formula ... es-expect/

Why Formula 1 Is Going to 18-Inch Tires, and What to Expect
Move to 18-inch tires is part of the wide-ranging technical changes being introduced for 2022.

BY PHILLIP HORTON
DEC 22, 2021

Drivers also had to get used to the slightly different view, with the new tires larger and thus making seeing the curbs harder, while overall there is an 11 kg weight gain from the four tires: 2.5 kg front, 3 kg rear. A few drivers tried out the new wheel covers, which may feature LEDs for potential sponsorship purposes, but knowing the effect of these so far is tricky due to the different aerodynamics and braking systems for 2022.

Marty_Y wrote: ↑

08 Jan 2022, 22:15

jjn9128 wrote: ↑

08 Jan 2022, 15:46

Blackout wrote: ↑

08 Jan 2022, 14:37

This is all I got

Is that total corner weight or tyre weight? I imagine the former.

https://www.autoweek.com/racing/formula ... es-expect/

Why Formula 1 Is Going to 18-Inch Tires, and What to Expect
Move to 18-inch tires is part of the wide-ranging technical changes being introduced for 2022.

BY PHILLIP HORTON
DEC 22, 2021

Drivers also had to get used to the slightly different view, with the new tires larger and thus making seeing the curbs harder, while overall there is an 11 kg weight gain from the four tires: 2.5 kg front, 3 kg rear. A few drivers tried out the new wheel covers, which may feature LEDs for potential sponsorship purposes, but knowing the effect of these so far is tricky due to the different aerodynamics and braking systems for 2022.

Isola says car mass increased by 14 kilograms due to heavier wheel/rim assemblies, split roughly 3kgs per front wheel and 4kg for rears.

https://racingnews365.com/how-pirellis- ... -f1-season

SiLo wrote: ↑

17 Jan 2022, 16:16

ringo wrote: ↑

17 Jan 2022, 16:06

SiLo wrote: ↑

17 Jan 2022, 15:47

The Italians being noisy is just par for the course though

That's what I like about Ferrari. They know how to bring the intrigue pre season. I am really looking forward to that car. They say 2017 is their inspiration, knowing they can challenge the top team with being very aggressive with design and innovation.
Mercedes I know will be very strong, they know how to look on themselves and improve. Tyre warm up may still remain their weakness, but with ground effect cars that may just dissapear.
Aslo BBS wheels will be the standard wheel for F-1. No more custom tyre warmup wheels from the other teams it appears. Just 1 wheel. Maybe BBS will offer some different styles to break up the monotony.

I don't like them switching to one supplier, even if we don't see those wheels on road cars, that kind of research may trickle down into some other industry.

It really doesn’t matter much what they look like, there will be full wheel covers, maybe with LED’s

The thinner tyre wall will also make tyre warmup less of a science for the teams. Less rubber and less working of the wall material to generate heat. The stiffer smaller mass of rubber and standard wheels should be good for Merc.

ringo wrote: ↑

17 Jan 2022, 17:06

The thinner tyre wall will also make tyre warmup less of a science for the teams. Less rubber and less working of the wall material to generate heat. The stiffer smaller mass of rubber and standard wheels should be good for Merc.

The tyres will not have a hugely different sidewall depth (current 13”wheels use 660mm tall tyres; new 18” wheels will use 720mm tyres) - there is roughly only 35mm less sidewall depth with the new wheels/tyres.