I think that's a bit short. The drivers used to sit with their knees much closer to their chests than they do now (more folded up) - so the difference from the front bulkhead to the rear of the cockpit opening between 1993 and now is about 0.4-0.5m. Pre-1988 the drivers feet didn't have to be behind the front axle line which is an essential safety reg.mzso wrote: ↑Wed Nov 04, 2020 11:05 pmIt would be a single line in the regs: Max lenght 4.3 meters. And just be done with it.
I see few data about car length, but on this website both the 1986 (bulky turbo) Ferrari and the 1993 (pre re-fuelling, but a lot slimmer) is claimed to be just under 4.3 meters.
I can't see why would present day cars need to be longer, when they could carry around a huge tank 220 liters of fuel (like a 100 liters more) with a 4.3 meter car. The present ones are getting close to 6 meters...
That said, the V10-12 engines also used to be over 600mm long while the current V6 is 480mm so you get some length back there. The fuel cell is smaller but you do have a battery and inverter inside it taking up volume.
The current cars don't need to be long, but it makes it easier to meet the weight distribution rule, makes the car more stable, and makes more downforce. I still agree with the idea of a severe length cut, but I think 4.8-5m is more realistic.