Thursday, July 29, 2021

Hybrid WRC Technical Regulations Announced-No Center differential”

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By Our Reporter

Embarking on a new era of more environmentally friendly World rally championship cars Rally1 category, FIA has Revealed partial technical regulations for the next generation of hybrid-powered cars.

In a decision coming from the FIA World Motor Sport Council meeting in Geneva on 6 March, The technical Regulation for the new class was approved. after a long period of rigorous analysis and investigation by the FIA’s team of expert personnel in close collaboration with the WRC manufacturers, with every design cost required to demonstrate a tangible benefit, without losing the identity of maintaining top-line performance. 

While the introduction of this next-generation category will mark the completion of the World Rally Car era, as the top tier of the FIA World Rally Championship, Rally1 retains the fundamentals behind the ongoing success of the WRC, but with a focus on cost management.

New Rally Pyramid

On the area of the size and shape of the forthcoming Hybrid cars, the FIA statement read Rally1 cars will continue to look and sound aggressive, But bear resemblance to their road-going equivalents, while achieving performance levels as close as possible to the current World Rally Car formula.

The approved technical rules are summarised below:

Transmission:
• 4WD, five-speed transmission very similar in concept to the current Rally2 rules
• Simple level type differential, no centre differential, only one kinematic drive train
• A maximum of six transmission units per car per year permitted
Suspension:
• Reduced wheel travel
• Simplified dampers with reduced scope for homologation upgrades
• Hubs, hub carriers and anti-roll bar designs will be simplified
• Only one specification of wishbone mandated
Running gear:
• Liquid brake cooling no longer allowed
Fuel tank:
• Simplified shape
Aerodynamics:
• Free volume bodywork area to enable aggressive design maintained
• Aero effect from hidden ducts removed
• Rear aerodynamic advice simplified

The working groups will continue to finalize a number of other areas of the regulations to be presented to the WRC Commission in May ahead of the June World Motor Sport Council meeting in Thailand when ratification will be sought. These areas relate to the fine detail of the engine regulations, hybrid technology specification and implementation following the completion of ongoing tender processes, standardized safety cell and other safety features designed by the FIA.

In addition, the FIA teams will continue to work on fuel development and the process of obtaining 2022 entry commitment from prospective manufacturers.

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