Ferrari 312PB Alternative Physics Data 20230517

Physics changes for Ferrari 312PB.
This is based on Legion 312PB. ACL 312PB has different center of gravity and may need to change visual model config as well.

Changelogs 20230517:
- Used bazza's torque data which should give ~465bhp @ 10800rpm
- Reworked aerodynamics parameters based on static calculations aiming 201kg downforce and 168kg drag @ 241kph=150mph=67.0m/s, with a L/D ratio of 1.2. The actual dynamic numbers may be better; haven't touched CL/CD LUTs.
The drag is a little bit on the optimistic side or more suitable for the 1973 version w/ lengthened body.
This will give a top speed of 330+kph combined with the revised power.
Downforce is 35% front, compared to 38% front weight (unchanged).
Reference: Porsche 908/3 (L/D=1.09), Porsche 936/77 (L/D=1.345); little reason to believe 312PB will have an L/D lower than 1 (0.6~0.7 are the numbers in all the mods I can find).
- Fixed weight to 725kg (only Legion 312PB have the wrong weight; FIA Appendix J minimum weight 650kg+75kg=725kg)
- Revised inertia, reference dimensions is now 97% width, 97% height and 85% length (just a way to approximate things).
- I have also left over two CM tire machine-generated GP 70s slicks which may either be a good enough representation or too grippy. The original "GP67" tire is retained. Feel free to modify (as the case for the rest of the data).

Notes:
1972 Spa 1000km pole time: 3:20.4
1973 Spa 1000km pole time: 3:12.7 (All-time 1947-78 layout fastest lap)