Rally1 hybrid cars (2022-)

[ouvreur]

It isn't a common spaceframe. While the regulations about rollcage / chassis construction are quite prescriptive, each team has designed, and either manufactures or outsources, its own chassis.

[becher]

Carsize is always a topic on the development table.
Car width is the same for all 1875 mm
Numbers I have found online are;

Brand Wheelbase Length
Toyota 2630 4225
Ford 2600 ? Do anyone know?
Hyundai 2630 4100


So cars are pretty similar, I am guessing due to the common spaceframe.
Difference of 120 mm btw Toyota and Hyundai in length with same wheelbase, is overhang front and rear. Might play a small part on gravel in tight corners.
Or are the cars too similar in the measurements that it will play a role on the different surfaces?

They are so similar in size because it is the sweetspot in regards of what is possible. I'd guess you couldn't really go any smaller due to packaging constraints and would potentially end up with a too short wheelbase if you'd were to go any smaller. Equally you wouldn't want a bigger car for obvious reasons, but you want to maximise the wheelbase (think a wheel in each corner). If we look back through the years we can see that manufacturers tried to go for a car that is round about four meters long whenever the regulations allowed.

Also as allready mentioned it is not a spec chassis, we are thankfully still talking about three different cars, not three different silhouettes.

[EstWRC]

Looks like a Dakar car from this shot

[Fast Eddie WRC]

The real pity is that spaceframe chassis was really only brought in so new manufacturers could enter and re-size their relevant car model to fit.

And after doing so, there's been no new manufacturers come in anyway....

[AnttiL]

The real pity is that spaceframe chassis was really only brought in so new manufacturers could enter and re-size their relevant car model to fit.

And after doing so, there's been no new manufacturers come in anyway....

What says that it was the reason for spaceframe chassis?

Also, what says some manufacturers want to first see how this concept works before they put in dozens of millions?

[becher]

What says that it was the reason for spaceframe chassis?

Also, what says some manufacturers want to first see how this concept works before they put in dozens of millions?

It was certainly one of the reasons I would guess.

[Fast Eddie WRC]

What says that it was the reason for spaceframe chassis?

'Scaling' is allowed and this couldn't be done if using a manufacturers production car bodyshell.

[AnttiL]

'Scaling' is allowed and this couldn't be done if using a manufacturers production car bodyshell.

There's more to it, making the cars lighter and better fitted for the hybrid unit, and also allowing the common safety cell to be used, increasing the safety of the cars.

The current three year regulation cycle cannot attract new manufacturers right now, no one will join in just for two years, unless FIA extends the current regulations somehow (maybe with everyone's own hybrid unit or something). Another thing is that these space frames could also be used for electric rally cars, if that's what the main class is in 2025, but too early to make guesses.

And finally we must remember that keeping the current manufacturers was every bit as important as getting new ones.

[Fast Eddie WRC]

Wiki
"Tubular space frame structures are permitted allowing for scaling of production models."

[AnttiL]

Yes. It is now allowed to do scaling.