WEC News: LMDh regulation details released by ACO, IMSA

Draft technical regulations for the new LMDh prototype category for the World Endurance Championship and the IMSA SportsCar Championship have been released to interested manufacturers and constructors

WEC News: LMDh regulation details released by ACO, IMSA

The first version of the regulations for the new class announced at the Daytona 24 Hours in January was sent to manufacturers and the four constructors awarded licences to build LMDh machinery last week.

The move has been simultaneously announced by the WEC and its promoter, the Automobile Club de l'Ouest and IMSA, though the regulations have yet to be published.

The final regulations for the category that will allow the same machinery to race in both the WEC and IMSA from 2022 are due to be announced by or before the rescheduled Le Mans 24 Hours in September.

The announcement confirmed that the category will be based on the next-generation of LMP2 machinery.

Manufacturers will then be able to fit their own engine and bodywork to one of the P2 chassis from ORECA, Ligier, Dallara and Multimatic in the same way as they do with IMSA's existing Daytona Prototype international category.

A single-source or spec rear-axle hybrid system will be mandatory and only one aerodynamic configuration will be allowed.

The minimum weight for the class has been announced as 1030kg and peak power for the internal combustion engine and the hybrid system as 500kW or 675bhp.

The WEC and IMSA further outlined an intent for the LMDh machinery to race on equal terms with the LM Hypercars that will come on stream in the world championship in 2021.

The statement said that it wants "to ensure convergence leads to similar performance parameters for both rule sets".

The performance of the different types of car will ultimately be equated by a system of Balance of Performance.

The press statement warned that the timeline for the introduction of the LMDh category could change.

It stated: "The introduction of LMDh race cars continues to be targeted in the 2022 racing season for both the ACO and IMSA.

"However, this timeline will clearly need to be further validated in partnership with the automotive manufacturers, chassis constructors and key suppliers in light of the COVID-19 pandemic to determine if a delayed introduction becomes necessary."

The minimum lifespan of the new category will be five years.

The announcement addressed the issue of LM Hypercars being able to race in the IMSA series. The US series will be open to LMH participation from mainstream automotive manufacturers once performance at IMSA circuits is validated.

ACO president Pierre Fillon said: "We are unveiling the basic technical details of this new LMDh category which will allow the same car to race in the WEC and IMSA without any modification necessary to the car. The dream of many manufacturers is finally coming true."

IMSA CEO Ed Bennett described the release of the LMDh rules as "another key milestone".

"These regulations provide a roadmap for manufacturers and constructors to embark on the design process for new LMDh race cars that will revolutionize the top category of premier sportscar racing around the globe," he said.

shares
comments
WEC News: Senna wants "proper race" between Rebellion and Toyota in 2020
Previous article

WEC News: Senna wants "proper race" between Rebellion and Toyota in 2020

Next article

Have a go hero: How an F1 star won Le Mans by surprise

Have a go hero: How an F1 star won Le Mans by surprise
Why the WEC should make space for modern garagistes in 2023 Plus

Why the WEC should make space for modern garagistes in 2023

OPINION: There is plenty of excitement over the glut of manufacturers tackling the Hypercar class of the World Endurance Championship this season. The selection committee is set to face headaches over who it decides to admit and who gets turned away from the 2023 entry list, but history tells us that the smaller entrants have a place

WEC
Jan 9, 2023
Autosport writers' most memorable moments of 2022 Plus

Autosport writers' most memorable moments of 2022

The season just gone was a memorable one for many of our staff writers, who are fortunate enough to cover motorsport around the world. Here are our picks of the best (and in some cases, most eventful) from 2022

Formula 1
Dec 31, 2022
Is Qatar the price motorsport fans have to pay? Plus

Is Qatar the price motorsport fans have to pay?

OPINION: Fresh from hosting a controversial 2022 football World Cup, Qatar has added its name to the 2024 World Endurance Championship calendar. Although questions may be asked about its presence on the calendar, is it simply the price to pay for having a healthy racing championship?

WEC
Dec 21, 2022
How Toyota defeated Alpine for the 2022 WEC title Plus

How Toyota defeated Alpine for the 2022 WEC title

Toyota #8 trio Brendon Hartley, Sebastien Buemi and Ryo Hirakawa outscored their rivals in the last season before the World Endurance Championship’s top class gets ultra-competitive. Here's how their Hypercar battle with Alpine and the remaining class tussles played out in LMP2, GTE Pro and GTE Am

WEC
Dec 5, 2022
The long road to convergence for sportscar racing's new golden age Plus

The long road to convergence for sportscar racing's new golden age

The organisers of the World Endurance Championship and IMSA SportsCar Championship worked together to devise the popular new LMDh rule set. But to turn it from an idea into reality, some serious compromises were involved - both from the prospective LMDh entrants and those with existing Le Mans Hypercar projects...

IMSA
Nov 25, 2022
How Porsche's Le Mans legend changed the game Plus

How Porsche's Le Mans legend changed the game

The 956 set the bar at the dawn of Group C 40 years ago, and that mark only rose higher through the 1980s, both in the world championship and in the US. It and its successor, the longer-wheelbase 962, were voted as Autosport's greatest sportscar in 2020 - here's why

WEC
Aug 25, 2022
Why BMW shouldn't be overlooked on its return to prototypes Plus

Why BMW shouldn't be overlooked on its return to prototypes

OPINION: While the focus has been on the exciting prospect of Ferrari vs Porsche at the Le Mans 24 Hours next year, BMW’s factory return to endurance racing should not be ignored. It won't be at the French classic next year as it focuses efforts on the IMSA SportsCar Championship, but could be a dark horse in 2024 when it returns to La Sarthe with the crack WRT squad

Le Mans
Aug 21, 2022
The problem sausage kerbs continue to cause Plus

The problem sausage kerbs continue to cause

Track limits are the problem that motorsport doesn't seem to be able to rid itself of. But the use of so-called 'sausage kerbs' as a deterrent has in several instances only served to worsen the problem, and a growing number of voices want to see action taken

Formula 1
Jul 18, 2022