First post would be updated as I work on mod and know something new about. Questions and problems on development I will mark Improvement suggestions are welcome.
Real CoG is currently unknown to me. Model CoG is 0.385 above ground.
Compared to LFS cars (XRT — 0.470; FZ5 — 0.412; LX6 — 0.370; RAC — 0.366) and Blackbird (0.392), say, for first approximation it is acceptable, but need to be clarified later, since a mm make difference.
wheels (within chosen dimensions not customisable) — 81 kg and
suspension (minimal mass constant = 0.1) — 121 kg.
Plate claims idle 900 rpm and another engine settings, most of all I like ignition timing string. Whole video by James Cottingham (DK Engineering TV) worth watching.
No anti-dive confirmed.
I like road car behavior with noticeable suspension travel, that real feel no other sim but LFS simulates so well.
Maximum speed with claimed gearbox ratios from Autocar magazine allegedly doesn't match well-known record 386.7 kph as redline was raised for record run, detailed information on Racing Line magazine.
Some progress (GIF)
Sizes correspond to manual.
Rims modelled by converting NURBS spoke profile to mesh with shrinkwrap modifier.
Rear lights: red COBO 02.279, amber COBO 02.282.
Article in Racecar Engineering (June 1996) has very detailed monocoque description, including center beams dimensions: height 250mm (match main reference sketch) and width 150mm on floor, as well as distance between them — 22 inches.
Vehicle Editor does not allow place two kinda-rear passengers due well-known unique three-seat layout.
Steering wheel was modelled using pic from book "Driving Ambition" which I redrawn to better mesh align.
Clocks
Interesting statement about about the first implemented feature:
Thanks to Jay Leno we can see McLaren F1 fuel cell and know it must be replaced proximly every five years (same tells whichcar.com.au).
Paul Martin was in charge of composites.
Steve Randle did stress analysis and ended up working on the car’s suspension.
(source)
Peter Stevens — stylist
Vehicle ClassThanks to this post now I get difference between touring and saloon.
MassAccording to book "Driving Ambition" kerb weight (incl half tank): 1138kg. Distribution front/rear: 41.2/58.8
Real CoG is currently unknown to me. Model CoG is 0.385 above ground.
Compared to LFS cars (XRT — 0.470; FZ5 — 0.412; LX6 — 0.370; RAC — 0.366) and Blackbird (0.392), say, for first approximation it is acceptable, but need to be clarified later, since a mm make difference.
Mass > EngineAccording to audiosignal.co.uk, engine mass 303kg automatically determined by Vehicle Editor a bit heavy: engine+all ancillaries, the exhaust and silencer is 266kg.
Mass > SuspensionBook "Driving Ambition" claims unsprung corner weights are 42kg front and 55kg rear (total 97kg), which I believe consist wheels and suspension. Meanwhile, minimum unsprung weight that LFS Editor allows over 200% target consists of the sum 202 kg:
wheels (within chosen dimensions not customisable) — 81 kg and
suspension (minimal mass constant = 0.1) — 121 kg.
Engine
Plate claims idle 900 rpm and another engine settings, most of all I like ignition timing string. Whole video by James Cottingham (DK Engineering TV) worth watching.
Steering
- Maximum Lock — I figured maximum lock is 33 degrees while testing on Layout Square — according to Autocar magazine turning circle is 13 m.
- Steering Wheel Turn (ONE WAY) 504 degrees — according to Autocar magazine lock to lock 2.8 turns.
- Parallel steer — quote from C466/007/93 (Concept and design of the McLaren F1 suspension systems), see attachments to post by user flemke on 26-09-2019 (hereinafter the "C466/007/93"): "...around 40% of full ackerman was adopted for F1."
Suspension
- Camber — planned: 45' F&R, but user tortoise claimed: 1.75 F; 0.75 R.
- Inclination. Front — according to audiosignal.co.uk — 8 degrees. Rear I tentatively figured by freeze frame tracking. Whole video by Tim McNair (Grand Prix Concours) worth watching.
- Caster — according to audiosignal.co.uk — 4.6 degrees (46 is written — I think point just lost).
- Scrub radius — according to audiosignal.co.uk is 25 mm.
- No rear anti-roll bar. Here's what Gordon Murray said about the anti-roll bar at the front only (interview with Henry Catchpole on Carfection YouTube channel):
- Roll centre — according to C466/007/93: 3.1 Roll centre "...the centres be placed at 30mm and 60mm above the ground, front and rear respectively."
- Roll compensation — planned 75% roll compensation (4.4 degrees for 80 mm travel). Later in C466/007/93: "...55-65% roll compensation...". So let's set it to about 3.7 degrees for 80mm travel.
- Motion Range — according to audiosignal.co.uk: 170mm (90 bump + 80 rebound).
- Ground clearance — 120mm, and there is a little problem. I figure that way:
Lowest: front axle height=192mm-80(rebound)=112mm and rear axle height=228mm-80(rebound)=148mm
Front corner load: 1138kg*41.2%/2=234kg and rear corner load: 1138kg*58.8%/2=334kg, but spring load does not include unsprung weight — wheels and suspension.
Wheels unsprung weight: atomatically determined by Vehicle Editor mass of four identical wheels 235/45R17: 69kg. In case URC1 — two 235/45R17 plus two 315/45R17: 81kg. Therefore mass of one front wheel 69kg/4=17.25kg and rear wheel (81kg-17.25kg*2)/2=23.25kg. But!
Suspension unsprung weight: target ground clearance (120mm) can only be obtained by subtracting front and rear unsprung suspension mass in very strange proportions, namely (per axle): front 10.2kg (8.4% suspension mass) and rear 67.8kg (56% suspension mass). Can't be true.
Front spring: Load 234-17.25(front wheel)- 5.1(unsprung suspension per corner)=212kg. Stiffness 26N/mm. 212/(26/9.8)=~80mm.
Rear spring: Load 334-23.25( rear wheel)-33.9(unsprung suspension per corner)=277kg. Stiffness 34N/mm. 277/(34/9.8)=~80mm.
I must say right away that inclination of the spring is not the case: in the LFS stiffness is set in a vertical projection.
No anti-dive confirmed.
I like road car behavior with noticeable suspension travel, that real feel no other sim but LFS simulates so well.
Final driveLock is 40% — according to netcarshow.com.
Maximum speed with claimed gearbox ratios from Autocar magazine allegedly doesn't match well-known record 386.7 kph as redline was raised for record run, detailed information on Racing Line magazine.
TyresTyre pressure information.
AerodynamicsMaybe the coolest thing about this car, described by Gordon Murray (on Speedvision channel):
MeshMainly using this main reference sketch, which has accurate object positions.
Some progress (GIF)
Sizes correspond to manual.
Rims modelled by converting NURBS spoke profile to mesh with shrinkwrap modifier.
Rear lights: red COBO 02.279, amber COBO 02.282.
Article in Racecar Engineering (June 1996) has very detailed monocoque description, including center beams dimensions: height 250mm (match main reference sketch) and width 150mm on floor, as well as distance between them — 22 inches.
Vehicle Editor does not allow place two kinda-rear passengers due well-known unique three-seat layout.
Steering wheel was modelled using pic from book "Driving Ambition" which I redrawn to better mesh align.
Clocks
Interesting statement about about the first implemented feature:
Thanks to Jay Leno we can see McLaren F1 fuel cell and know it must be replaced proximly every five years (same tells whichcar.com.au).
People working on IRLBarry Lett had arrived from Lotus to oversee body engineering.
Paul Martin was in charge of composites.
Steve Randle did stress analysis and ended up working on the car’s suspension.
(source)
Peter Stevens — stylist