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360 Tuning
01-29-2008, 06:07 AM,
#7
Update
Better a new Topic: „360-Tuning“ !?

--------------------
I work an mass distribution, suspension and some other parameters 3h this night. But three testdriver at the same time....!

Quote:* I played around with the racer pacejka editor and created some new tire coefficients (pretty much from scratch)
? Where is this editor?
Quote:* wikipedia says the max torque is 373 Nm, so I scaled the dyno-based torque curve up to meet the spec value
P 232.059 KW = 315 HP exactly
To scale gives a realistic curve.

Quote:* I modified the engine inertia to make it rev a little more slowly
False. This lowers the car control. Most of the inertias are too high!

Quote:* I tweaked the brake bias a little bit to try to get better stopping, but wasn't very successful
I computed the mass distribution with new masses and changed the brake bias.
The car is very instable breaking (with ABS!) ?-)


Here is my latest configuration. (Update 20080129)

Quote:# based on Revision 141+03+147: /vdrift-data/cars/360
# 360 (v. 360-04)
#
# total weight ,00 at start
# wheelbase:
# weight distribution (front/rear)) % / %
# centre of mass -0,
# centre of downforce -0,
#
# length, width, height :: X(+front), Y(+left), Z(+up)
#
#-----------------------------------------
#
# http://www.supercarsite.net/ferrari/360-modena/2000
#
# Length 4477 mm / 176.3 in
# Width 1922 mm / 75.7 in
# Height 1214 mm / 47.8 in
# Wheelbase 2600 mm / 102.4 in
# Weight 1390 kg / 3,064 lbs
# Front Track F 1669 mm / 65.7 in
# Rear Track R 1617 mm / 63.7 in
# Engine
# Configuration 3.6 Liter V8
# Power 298.3 kW / 400.0 bhp at 8500 rpm
# Torque 372.9 Nm / 275.1 ft lbs at 4750 rpm
# Redline 8500 rpm
# Chassis & Body
# Brake Type Vented Discs w/ Vacuum Assist & ABS
# Brake Size F 330 mm / 13.0 in
# R 330 mm / 13.0 in
# Wheels F 45.7 x 19.1 cm / 18.0 x 7.5 in => 45.7/2 + 215 x 0.45 = 22,85 + 9,675 = 32,5
# R 45.7 x 24.1 cm / 18.0 x 9.5 in => 45.7/2 + 275 x 0.45 = 22,85 + 12,375 = 35,2
# Tyres F 215/45ZR-18
# R 275/40ZR-18
# Transmission
# Gear Type 6 Speed Manual
# Final Drive 4.44:1
# 1st Gear Ratio 3.29:1
# 2nd Gear Ratio 2.16:1
# 3rd Gear Ratio 1.61:1
# 4th Gear Ratio 1.27:1
# 5th Gear Ratio 1.03:1
# 6th Gear Ratio 0.85:1
# Performance
# Top Speed 295.0 kph / 183.3 mph
# 0 - 62 mph 4.3 seconds
# 0 - 100 mph 10.2 seconds
# 0 - ¼ mile 12.6 seconds
#---------------------------------------

drive = RWD

[ steering ]
max-angle = 36.0

[ engine ]
position = 1.4, 0.0, -0.1
mass = 200.0
max-power = 313000
peak-engine-rpm = 8500
rpm-limit = 9000.0
inertia = 0.3
idle = 0.025
start-rpm = 1000
stall-rpm = 600
fuel-consumption = 0.0001
torque-friction = 0.0005
# rev 147
#
# P = M x n x 0.10472
# HP = 0.7355 x P (KW)
#
torque-curve-00 = 1000, 121
torque-curve-00 = 1000, 121
torque-curve-01 = 1500, 182
torque-curve-02 = 2200, 217
torque-curve-03 = 2700, 246
torque-curve-04 = 3200, 257
torque-curve-05 = 3850, 302
torque-curve-06 = 4200, 322
torque-curve-07 = 4800, 355
torque-curve-08 = 5050, 373
torque-curve-09 = 5200, 368
torque-curve-10 = 5775, 361
torque-curve-11 = 5850, 365
torque-curve-12 = 6000, 365
torque-curve-13 = 6800, 332
torque-curve-14 = 7300, 332
torque-curve-15 = 7700, 338
torque-curve-16 = 8000, 335
torque-curve-17 = 8600, 309
torque-curve-17 = 9200, 279

[ clutch ]
# rev 147
sliding = 0.025
radius = 0.1
area = 1.0
max-pressure = 4e5
#sliding = 0.2
#radius = 0.3
#area = 0.9
#max-pressure = 30000

[ transmission ]
gears = 6
gear-ratio-r = -3.29
gear-ratio-1 = 3.29
gear-ratio-2 = 2.16
gear-ratio-3 = 1.61
gear-ratio-4 = 1.27
gear-ratio-5 = 1.03
gear-ratio-6 = 0.85
shift-delay=0.15

[ differential ]
final-drive = 4.44
anti-slip =600.0

[ fuel-tank ]
position = -1.2, -0.1, -0.26
capacity = 100.0
volume = 100.0
fuel-density = 0.8

[ suspension-front ]
# rev 147
spring-constant = 80000.0
bounce = 2000.0
rebound = 6000.0
#spring-constant = 50000.0
#bounce = 1500.0
#rebound = 5000.0
travel = 0.12
max-compression-velocity = 10.0
camber = -1.0
caster = 6.12
toe = 0.0
anti-roll = 1000.0

[ suspension-rear ]
# rev 147
spring-constant = 95000.0
bounce = 2500.0
rebound = 7000.0

#spring-constant = 70000.0
#bounce = 1500.0
#rebound = 7000.0

## Federweg
travel = 0.14
max-compression-velocity = 10.0
## Radsturz
camber = -0.45
## Nachlauf
caster = 0.28
## Vorspur?
toe = 0.0
## Stabilisator
anti-roll = 2000.0

[ tire-front ]
radius = 0.325
rolling-resistance = 1.3e-2, 6.5e-6
rotational-inertia = 2.5
tread = 0.00873125
# rev 147
# Lateral coefficients
a0=1.546
a1=50
a2=1638
a3=2439
a4=10
a5=0.01400
a6=-0.37000
a7=1.00000
a8=0.04000
a9=-0.00130
a10=-0.014
a111=-8.50000
a112=-0.29000
a12=0.00000
a13=-2.40000
# Longitudinal coefficients
b0=1.68000
b1=5.00000
b2=1878.00000
b3=1.00000
b4=333.00000
b5=0.14600
b6=0.01200
b7=0.04000
b8=-0.57400
b9=0.01400
b10=0.26000
# Aligning moment coefficients
c0=2.20000
c1=-3.90000
c2=-3.90000
c3=-1.26000
c4=-8.20000
c5=0.02500
c6=0.00000
c7=0.04400
c8=-0.58000
c9=0.18000
c10=0.04300
c11=0.04800
c12=-0.00350
c13=-0.18000
c14=0.14000
c15=-1.02900
c16=0.27000
c17=-1.10000

[ tire-rear ]
radius = 0.352
rolling-resistance = 1.3e-2, 6.5e-6
rotational-inertia = 3.00
tread = 0.00873125
# rev 147
# Lateral coefficients
a0=1.546
a1=50
a2=1638
a3=2439
a4=10
a5=0.01400
a6=-0.37000
a7=1.00000
a8=0.04000
a9=-0.00130
a10=-0.014
a111=-8.50000
a112=-0.29000
a12=0.00000
a13=-2.40000
# Longitudinal coefficients
b0=1.68000
b1=5.00000
b2=1878.00000
b3=1.00000
b4=333.00000
b5=0.14600
b6=0.01200
b7=0.04000
b8=-0.57400
b9=0.01400
b10=0.26000
# Aligning moment coefficients
c0=2.20000
c1=-3.90000
c2=-3.90000
c3=-1.26000
c4=-8.20000
c5=0.02500
c6=0.00000
c7=0.04400
c8=-0.58000
c9=0.18000
c10=0.04300
c11=0.04800
c12=-0.00350
c13=-0.18000
c14=0.14000
c15=-1.02900
c16=0.27000
c17=-1.10000

[ brakes-front ]
friction = 0.9
max-pressure = 3.0e6
bias = 0.55
radius = 0.14 # 330mm
area = 0.02

[ brakes-rear ]
friction = 0.9
max-pressure = 3.0e6
bias = 0.45
radius = 0.140
area = 0.015
handbrake = 1.0

[ driver ]
position = 0.0, 0.0, 0.0
mass = 90.0
# rev 147
view-position = -0.28, 0.28, 0.42
#hood-mounted-view-position = 0.75, 0, 0.42
#view-position = -0.28, 0.45, 0.42
hood-mounted-view-position = -0.28, 0.28, 0.4 # normal driver position

[ drag ]
position = 0.0, 0.0, -0.60
frontal-area = 1.6
drag-coefficient = 0.34

[ wing-front ]
position = 2.34, 0, -0.6
frontal-area = 0.2
drag-coefficient = 0
surface-area = 0.5
lift-coefficient = -0.10
efficiency = 0.95

[ wing-rear ]
position = -2.14, 0, 0.37
frontal-area = 0.2
drag-coefficient = 0
surface-area = 1.0
lift-coefficient = -0.10
efficiency = 0.95

[ wheel-FR ]
position = 1.12, -0.8345, -0.29 # track +-Y = 1669/2
roll-height = 0.315
mass = 30.0
restitution = 0.1

[ suspension-FR ]
position = 1.12, -0.60, -0.35
hinge = 1.12, -0.71, -0.0

[ wheel-FL ]
position = 1.12, 0.8345, -0.29
roll-height = 0.315
mass = 30.0
restitution = 0.1

[ suspension-FL ]
position = 1.12, 0.60, -0.35
hinge = 1.12, 0.71, -0.0

[ wheel-RR ]
position = -1.51, -0.8085, -0.30 # track +-Y = 1617/2
roll-height = 0.34
mass = 30.0
restitution = 0.1

[ suspension-RR ]
position = -1.51, -0.60, -0.35
hinge = -1.51, -0.7, -0.0

[ wheel-RL ]
position = -1.51, 0.8085, -0.30
roll-height = 0.34
mass = 30.0
restitution = 0.1

[ suspension-RL ]
position = -1.51, 0.60, -0.35
hinge = -1.51, 0.7, -0.0

[ contact-points ]
# used to find the bounds of the car (for collisions)
# also play into the weight distribution and balance
mass = 0,5
position-00 = -2.32, 1.11, -0.62
position-01 = 2.32, 1.11, -0.62
position-02 = -2.32, -1.11, -0.62
position-03 = 2.32, -1.11, -0.62

# these are used to calculate the weight distribution and balance
[ particle-00 ] # Chassis Front
mass = 100
position = 1.2, 0.0, -0.22

[ particle-01 ] # Cooler front
mass = 100
position = 1.0, -0.0, -0.22

[ particle-02 ] # Chassis left
mass = 180
position = 0.4, 0.8, -0.22

[ particle-03 ] # Chassis right
mass = 180
position = 0.4, -0.8, -0.22

[ particle-04 ] # Motor Env. left
mass = 80
position = -0.8, -0.6, -0.22

[ particle-05 ] # Motor Env. right
mass = 80.0
position = -0.8, 0.60, -0.22

[ particle-06 ] # Chassis rear
mass = 150.0
position = -1.3, 0.00, -0.15

[ particle-07 ] # -
mass = 0.0
position = 1.60, 0.00, -0.55

[ particle-08 ] # Reserve
mass = 0.0
position = 0.0, -0.00, -0.0

[ particle-09 ] # gearbox
mass = 50.0
position = -1.45, 0.00, -0.35

[ particle-10 ] # -
mass = 0.0
position = -1.70, 0.00, -0.10
Reply


Messages In This Thread
RE: 360 Tuning - by cologne - 01-26-2008, 07:15 PM
[No subject] - by thelusiv - 01-27-2008, 04:35 PM
[No subject] - by joevenzon_phpbb2_import3 - 01-28-2008, 07:52 PM
[No subject] - by cologne - 01-28-2008, 08:33 PM
[No subject] - by thelusiv - 01-28-2008, 10:31 PM
[No subject] - by joevenzon_phpbb2_import3 - 01-29-2008, 01:54 AM
Update - by cologne - 01-29-2008, 06:07 AM
[No subject] - by joevenzon_phpbb2_import3 - 01-29-2008, 08:57 PM
Re: Update - by joevenzon_phpbb2_import3 - 01-30-2008, 12:37 AM
[No subject] - by cologne - 01-30-2008, 07:43 PM
[No subject] - by joevenzon_phpbb2_import3 - 01-30-2008, 11:32 PM
[No subject] - by cologne - 01-31-2008, 05:49 AM
[No subject] - by cologne - 01-31-2008, 05:15 PM
[No subject] - by joevenzon_phpbb2_import3 - 01-31-2008, 09:39 PM
[No subject] - by cologne - 02-01-2008, 09:12 PM
[No subject] - by joevenzon_phpbb2_import3 - 02-02-2008, 12:03 PM
[No subject] - by joevenzon_phpbb2_import3 - 02-02-2008, 12:14 PM
[No subject] - by cologne - 02-02-2008, 01:46 PM
[No subject] - by thelusiv - 02-02-2008, 10:11 PM
[No subject] - by cologne - 02-03-2008, 07:41 AM
[No subject] - by thelusiv - 02-03-2008, 06:24 PM
[No subject] - by cologne - 02-03-2008, 06:58 PM

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