Rally1 hybrid cars (2022-)

[ouvreur]

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

It was one of the reasons, sure. But it's wasn't "really only brought in so new manufacturers could enter and re-size their relevant car model to fit" - the primary objective was to make the cars safer, both for the occupants, and the hybrid system. Chopping up standard road car chassis to turn them into rally cars will never be as safe or purposeful, as building a spaceframe from scratch.

[becher]

It was one of the reasons, sure. But it's wasn't "really only brought in so new manufacturers could enter and re-size their relevant car model to fit" - the primary objective was to make the cars safer, both for the occupants, and the hybrid system. Chopping up standard road car chassis to turn them into rally cars will never be as safe or purposeful, as building a spaceframe from scratch.

Strictly speaking that is not true, you can make a modified production shell so strong that the driver dies of deceleration (which actually happend in circuit racing), so there isn't really a limit to make a production based car save enough other than the laws of physics. It is however much cheaper to design a space frame from the ground up than to chop up a roadcar shell and modify it in such an extensive way like a WRCar.

[Fast Eddie WRC]

Using a traditional road car chassis is still actually permitted under the Rally1 Regs. The tubular spaceframe was initially brought in when they wanted additional manufacturers to join who maybe didnt have a road car of the right size.

The existing teams then also used them for the hybrid packaging and safety advantages.

[becher]

Using a traditional road car chassis is still actually permitted under the Rally1 Regs. The tubular spaceframe was initially brought in when they wanted additional manufacturers to join who maybe didnt have a road car of the right size.

The existing teams then also used them for the hybrid packaging and safety advantages.

Last time I heard about that was at the FIA meeting in 2019 when they first announced these rules. It was never mentioned since then and I doubt it is still regulations, but someone might be able shed some light on this topic.

[tommeke_B]

Not sure if it's something new, haven't noticed it on any photos from Monte Carlo. There are two valves on the rim. From what I heard the 2nd valve could be for pulling out regular air when filling up the tyre with nitrogen. Anyone on here who can confirm what they use it for?

[dimviii]

Not sure if it's something new, haven't noticed it on any photos from Monte Carlo. There are two valves on the rim. From what I heard the 2nd valve could be for pulling out regular air when filling up the tyre with nitrogen. Anyone on here who can confirm what they use it for?

thats right. Many japanese racing wheels for circuit racing have 2 valves.

[br21]

Pressure sensor

[dimviii]

Pressure sensor

some rims havethe second hole for sensor,but when the one hole is for sensor is not at this part of the rim,but near the centre of the rim(easier to dismandle a tyre without broking the sensor)

[ouvreur]

Rallye Hannut, with Jourdan Serderidis.

[Fast Eddie WRC]

Rallye Hannut, with Jourdan Serderidis.

Yes, there's lots of videos including the Puma if you search on YouTube for Rallye de Hannut 2022.