Just_a_fan wrote: ↑16 Dec 2019, 15:45
Lotus102 wrote: ↑16 Dec 2019, 15:19
Just_a_fan wrote: ↑15 Dec 2019, 01:28
Modern F1 started with carbon chassis. Before that there was a direct lineage back to the 1930s with space frames, folded aluminium etc.
The carbon monocoque was mostly just an aluminium monocoque in a different material. The alu monocoque was the big step, especially when the engine was included as a stressed member. You can argue that the ladder chassis evolved into the spaceframe (e.g. Ferrari 375 to Ferrari 500, Maserati 4CL to A6GCM), but the monocoque was a conceptual break.
But the monocoque wasn't a new idea - it had been used in the 1930s on road cars, for example, and in aircraft before/after that.
Where the use of carbon for the chassis was the big step was safety. Before the carbon tub, F1 cars were death traps with many drivers being killed / seriously injured over the years. After the introduction of the carbon tub, deaths are thankfully rare.
The safety of the sport is what marks out "modern" F1 from "old" F1 in my mind.
The monocoque wasn't a new idea in the 60s, but previous incarnations had been isolated experiments and not been remotely influential. Once the Lotus 25 came along, within a few years everyone had switched to monocoques.
The carbon tub was a big step forward from the safety perspective, but I don't know if you can give it sole credit for turning the sport from a dangerous one to a safe one. And it's not as though it made a massive difference statistically. There were four deaths in F1 in the five years to 1980, and four deaths in the five years after it - but there had been eight deaths in the five years to 1975. There were a whole host of other developments underway in the late 70s and early 80s, in circuit design and other infrastructure, medical facilities at circuits, handling and transfer of casualties, motorsport medicine, and other car safety devices like aircraft-style self-sealing fuel tanks and automatic fire extinguishers. Sid Watkins joined F1 in 1978, for example. So yes, the safety is a big factor in F1 but when can you date it from? Jackie Stewart's crusade in the late 60s? Pete Revson's crash that prompted greater circuit safety infrastructure? Roger Williamson's or Tom Pryce's crashes that led to a revolution in the marshalls' role in safety? Niki Lauda's crash that led to a move away from the older unsafe circuits? De Angelis' death? Senna's? I see it much more as a steady evolution involving lots of different factors, not a single revolutionary development.