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360 Tuning
01-26-2008, 07:15 PM,
#1
RE: 360 Tuning
This is a first tuning of the 360 with the real power (~400HP, torque-curve interpolated by hand) and speed (300Km/h) and now it´s Rearwheel driven! ;-)

...,only a first step.

Quote:# based on Revision 141: /vdrift-data/cars/360
# 360 (v. 360-01)
#
# 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)
#

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
torque-curve-00 = 1000, 100
torque-curve-01 = 1500, 150
torque-curve-02 = 2000, 200
torque-curve-03 = 2500, 250
torque-curve-04 = 3000, 300
torque-curve-05 = 3500, 330
torque-curve-06 = 4000, 350
torque-curve-07 = 4750, 373 # M373
torque-curve-08 = 5000, 369
torque-curve-09 = 5500, 366
torque-curve-10 = 6000, 362
torque-curve-11 = 6500, 360
torque-curve-12 = 7000, 358
torque-curve-13 = 7500, 355
torque-curve-14 = 8000, 353
torque-curve-15 = 8500, 351.6 # P313
torque-curve-16 = 9000, 300

[ clutch ]
sliding = 0.2
radius = 0.3
area = 0.9
max-pressure = 30000

[ transmission ]
gears = 5
gear-ratio-r = -3.31
gear-ratio-1 = 3.31
gear-ratio-2 = 1.84
gear-ratio-3 = 1.31
gear-ratio-4 = 0.97
gear-ratio-5 = 0.76
shift-delay=0.25

[ differential ]
final-drive = 4.11
anti-slip =500.0

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

[ suspension-front ]
spring-constant = 80000.0
bounce = 2000.0
rebound = 6000.0
travel = 0.12
max-compression-velocity = 10.0
camber = -1.33
caster = 6.12
toe = 0.0
anti-roll = 6000.0

[ suspension-rear ]
spring-constant = 95000.0
bounce = 2500.0
rebound = 7000.0
travel = 0.14
max-compression-velocity = 10.0
camber = -0.45
caster = 0.28
toe = 0.2
anti-roll = 8000.0

[ tire-front ]
radius = 0.31
rolling-resistance = 1.3e-2, 6.5e-6
rotational-inertia = 4.0
tread = 0.00873125
# Lateral force
a0=1.35
a1=-49
a2=1316
a3=1732
a4=11
a5=0.006
a6=-0.04
a7=-0.4
a8=0.003
a9=-0.002
a10=0.16
a111=-11
a112=0.045
a12=0.17
a13=-23.5
# Longitudinal force
b0=1.57
b1=-48
b2=1338
b3=6.8
b4=444
b5=0
b6=0.0034
b7=-0.008
b8=0.66
b9=0
b10=0
b11=0
b12=0
# Aligning moment
c0=2.46
c1=-2.77
c2=-2.9
c3=-0
c4=-3.6
c5=-0.1
c6=0.0004
c7=0.22
c8=-2.31
c9=3.87
c10=0.0007
c11=-0.05
c12=-0.006
c13=0.33
c14=-0.04
c15=-0.4
c16=0.092
c17=0.0114

[ tire-rear ]
radius = 0.31
rolling-resistance = 1.3e-2, 6.5e-6
rotational-inertia = 4.5.0
tread = 0.00873125
# Lateral force
a0=1.35
a1=-49
a2=1316
a3=1732
a4=11
a5=0.006
a6=-0.04
a7=-0.4
a8=0.003
a9=-0.002
a10=0.16
a111=-11
a112=0.045
a12=0.17
a13=-23.5
# Longitudinal force
b0=1.57
b1=-48
b2=1338
b3=6.8
b4=444
b5=0
b6=0.0034
b7=-0.008
b8=0.66
b9=0
b10=0
b11=0
b12=0
# Aligning moment
c0=2.46
c1=-2.77
c2=-2.9
c3=-0
c4=-3.6
c5=-0.1
c6=0.0004
c7=0.22
c8=-2.31
c9=3.87
c10=0.0007
c11=-0.05
c12=-0.006
c13=0.33
c14=-0.04
c15=-0.4
c16=0.092
c17=0.0114

[ brakes-front ]
friction = 0.9
max-pressure = 3.0e6
bias = 0.6
radius = 0.14
area = 0.02

[ brakes-rear ]
friction = 0.9
max-pressure = 3.0e6
bias = 0.4
radius = 0.14
area = 0.02
handbrake = 1.0

[ driver ]
position = 0.0, 0.023, 0.0
mass = 90.0
view-position = -0.28, 0.28, 0.42
hood-mounted-view-position = -0.28, 0.28, 0.42 # normal driver position

[ drag ]
position = 0.0, 0.0, -0.60
frontal-area = 1.6
drag-coefficient = 0.35

[ wing-front ]
position = 2.34, 0, -0.6
frontal-area = 0.2
drag-coefficient = 0
surface-area = 0.3
lift-coefficient = -0.10
efficiency = 0.95

[ wing-rear ]
position = -2.14, 0, 0.37
frontal-area = 0.2
drag-coefficient = 0
surface-area = 0.5
lift-coefficient = -0.15
efficiency = 0.95

[ wheel-FR ]
position = 1.15, -0.85, -0.27
roll-height = 0.2
mass = 30.0
restitution = 0.1

[ suspension-FR ]
position = 1.15, -0.60, -0.35
hinge = 0.55, -0.71, -0.0

[ wheel-FL ]
position = 1.15, 0.85, -0.27
roll-height = 0.2
mass = 30.0
restitution = 0.1

[ suspension-FL ]
position = 1.15, 0.60, -0.35
hinge = 0.55, 0.71, 0.0

[ wheel-RR ]
position = -1.51, -0.85, -0.27
roll-height = 0.2
mass = 30.0
restitution = 0.1

[ suspension-RR ]
position = -1.51, -0.60, -0.35
hinge = -1.94, -0.25, 0.0

[ wheel-RL ]
position = -1.51, 0.85, -0.27
roll-height = 0.2
mass = 30.0
restitution = 0.1

[ suspension-RL ]
position = -1.51, 0.60, -0.35
hinge = -1.94, 0.25, 0.0

[ contact-points ]
# used to find the bounds of the car (for collisions)
# also play into the weight distribution and balance
mass = 33
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 ]
mass = 219
position = -1.3, 0.8, -0.22

[ particle-01 ]
mass = 219
position = -1.3, -0.8, -0.22

[ particle-02 ]
mass = 195
position = 1.3, 0.6, -0.22

[ particle-03 ]
mass = 195
position = 1.3, -0.6, -0.22
Reply
01-27-2008, 04:35 PM,
#2
 
I have checked in your changes along with some of my own. I found a torque curve from a dyno graph here: http://www.dragtimes.com/Ferrari-360-Timeslip-8801.html

Also I changed the gear ratios to match these: http://www.supercarsite.net/ferrari/360-modena/2000

I also updated the hood camera position so that it is correct. This is all in the data repository r142.
Reply
01-28-2008, 07:52 PM,
#3
 
Uhm... are you sure you got the units correct on the torque curve? The car seems a little... slow.
Reply
01-28-2008, 08:33 PM,
#4
 
Quote:Uhm... are you sure you got the units correct on the torque curve?

Quote:torque-curve-15 = 7700, 279 # P 224.970 KW
torque-curve-16 = 8000, 277 # P 232.059 KW = 315 HP
torque-curve-17 = 8600, 255 # P 229.651 KW

It´s from an roller dynamometer, gives power an the tyre! With a drag of 0.30 nearly 270 Km/H. ;-(

The motor was in the Front and some other bad things... I am working on it.

Braking makes the car instable.... but it´s getting better!
Reply
01-28-2008, 10:31 PM,
#5
 
joevenzon Wrote:Uhm... are you sure you got the units correct on the torque curve? The car seems a little... slow.
Yep, I used Google calculator the same as I always do to convert torque (in ft-lbs) from the dyno graph I linked above to Newton-meters. But cologne raises a good point, rolling dynos don't report the torque at the flywheel which is what VDrift/Vamos uses (afaik anyway). I'm not sure the best way for us to adjust for this, so I'm not sure we should. But that could explain why the car feels a little slow, other reasons could include bad weight distribution, etc.

Actually, I think it's not all that slow anyway, even for the current weight (which might be close, the 360 is supposed to weigh around 3k lbs). The car certainly has traction problems through first and second gear, and with the new transmission setup, the trip from 3rd to 6th is pretty fast.
Reply
01-29-2008, 01:54 AM,
#6
 
In data R147 I made some changes to the 360:
* wikipedia says the max torque is 373 Nm, so I scaled the dyno-based torque curve up to meet the spec value
* I played around with the clutch values so the starts work better
* I played around with the racer pacejka editor and created some new tire coefficients (pretty much from scratch)
* I modified the engine inertia to make it rev a little more slowly
* I tweaked the brake bias a little bit to try to get better stopping, but wasn't very successful

Changes are highlighted:
http://vdrift.svn.sourceforge.net/viewvc...athrev=147
Reply
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
01-29-2008, 08:57 PM,
#8
 
We should set you up with SVN access to the data repository. I've committed the above to data R148.

I'll move the tuning parts of this thread to a new one.
Reply
01-30-2008, 12:37 AM,
#9
Re: Update
cologne Wrote:Where is this editor?

It's one of the binaries in the racer linux 0.5.0 release:
http://www.racer.nl/dl_linux.htm

Quote:The car is very instable breaking (with ABS!) ?-)
No kidding, ABS makes the braking horrible!
Reply
01-30-2008, 07:43 PM,
#10
 
Quote:No kidding, ABS makes the braking horrible!

It doesn´t brake with ABS, or the rear breaks out!

I´m trying different parameters, without success. :-(

Lowered brakeperformance, bias, inertia, but none shows a usable effect.

Changed the damper and spring rates. So the 360 moves good and goes better through curves.


@joevenzon i send you a request for SVN Data!
Reply
01-30-2008, 11:32 PM,
#11
 
What's your sourceforge member name?
Reply
01-31-2008, 05:49 AM,
#12
 
"vcologne"
Reply
01-31-2008, 05:15 PM,
#13
 
The 360 is now breakable and stable!!!
(Update: 7:49 Nuerburgring, first flying lap)

The suspension::hinge made the problem: greater than Wheel position (X) the car turns around on braking.

Not the last word, but driveable (version v. 360-05):
( tyre diameter corrected )

Quote:# based on Revision 141+03+147+148: /vdrift-data/cars/360
#
# 360.car (v. 360-05) 20080131 by cologne
#
# total weight 1410.00 at start
# wheelbase: 2.63
# weight distribution (front/rear)) 41% / 59%
# centre of mass -0.04
# centre of downforce -0.09
#
# 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 + 21.5 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 + 27.5 x 0.40 = 22.85 + 11.0 = 33.85
# 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 = -0.6, 0.0, -0.3
mass = 200.0
max-power = 313000
peak-engine-rpm = 8500
rpm-limit = 9000.0
inertia = 0.5
idle = 0.15 # idle is the throttle position at idle
start-rpm = 1000
stall-rpm = 500
fuel-consumption = 0.0001
torque-friction = 0.0005
#
# P = M x n x 0.10472
# HP = 0.7355 x P (KW)
#
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-18 = 9200, 279

[ clutch ]
sliding = 0.025
radius = 0.15
area = 1.0
max-pressure = 4e5

[ 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, 0.0, -0.26
capacity = 100.0
volume = 100.0
fuel-density = 0.8

[ suspension-front ]
spring-constant = 80000
bounce = 3000.0
rebound = 9000.0
travel = 0.12
max-compression-velocity = 10.0
camber = -1.0
caster = 6.12
toe = 0.2
anti-roll = 4000

[ suspension-rear ]
spring-constant = 100000
bounce = 5000.0
rebound = 15000.0
## Federweg
travel = 0.14
max-compression-velocity = 10.0
## Radsturz
camber = -0.45
## Nachlauf
caster = 0.28
## Vorspur?
toe = 0.1
## Stabilisator
anti-roll = 5000

[ tire-front ]
radius = 0.32
rolling-resistance = 1.3e-2, 6.5e-6
rotational-inertia = 4.0
#tread = 0.00873125
tread = 0.0
# 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 = 0.3335
rolling-resistance = 1.3e-2, 6.5e-6
rotational-inertia = 5.00
#tread = 0.00873125
tread = 0.0

# 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 = 4.0e6
bias = 0.55
radius = 0.130 # 330mm
area = 0.02

[ brakes-rear ]
friction = 0.9
max-pressure = 4.0e6
bias = 0.45
radius = 0.130
area = 0.02
handbrake = 1.0

[ driver ]
position = 0.0, 0.0, 0.0
mass = 90.0
view-position = -0.28, 0.28, 0.42 # moved driver position
#hood-mounted-view-position = 0.75, 0, 0.42
hood-mounted-view-position = -0.28, 0.28, 0.4 # static driver position

[ drag ]
position = 0.0, 0.0, 0.40
frontal-area = 1.6
drag-coefficient = 0.34

[ wing-front ]
position = 2.34, 0, -0.3
frontal-area = 0.2
drag-coefficient = 0
surface-area = 0.5
lift-coefficient = -0.10
efficiency = 0.95

[ wing-rear ]
position = -2.14, 0, -0.3
frontal-area = 0.2
drag-coefficient = 0
surface-area = 1.0
lift-coefficient = -0.15
efficiency = 0.95

#---------- F R O N T

[ wheel-FR ]
position = 1.12, -0.8345, -0.27 # track +-Y = 1669/2
roll-height = 0.32
mass = 30.0
restitution = 0.1

[ wheel-FL ]
position = 1.12, 0.8345, -0.27
roll-height = 0.32
mass = 30.0
restitution = 0.1

[ suspension-FR ]
position = 1.12, -0.60, -0.30
hinge = 0.90, 0.50, -0.20
#hinge = 1.12, 0.0, -0.40
#hinge = 1.12, 2.0, -0.1

[ suspension-FL ]
position = 1.12, 0.60, -0.30
hinge = 0.90, -0.50, -0.20
#hinge = 1.12, -0.0, -0.40
#hinge = 1.12, -2.0, -0.1

#---------- R E A R

[ wheel-RR ]
position = -1.51, -0.8085, -0.28 # track +-Y = 1617/2
roll-height = 0.33
mass = 30.0
restitution = 0.1

[ wheel-RL ]
position = -1.51, 0.8085, -0.28
roll-height = 0.33
mass = 30.0
restitution = 0.1

[ suspension-RR ]
position = -1.51, -0.70, -0.30
hinge = -1.00 , 0.0, -0.0
#hinge = -1.51, 2.0, -0.1

[ suspension-RL ]
position = -1.51, 0.70, -0.30
hinge = -1.00 , -0.0, -0.0
#hinge = -1.51, -2.0, -0.1

#----------

[ 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, 0.98, -0.40
position-01 = -2.32, 0.98, -0.40
position-02 = 2.32, -0,98, -0.40
position-03 = 2.32, -0.98, -0.40

# these are used to calculate the weight distribution and balance

[ particle-00 ] # Chassis Front
mass = 100
position = 1.2, 0.0, -0.35

[ particle-01 ] # Cooler front
mass = 100
position = 1.0, -0.0, -0.40

[ particle-02 ] # Chassis left
mass = 180
position = 0.4, 0.8, -0.20

[ particle-03 ] # Chassis right
mass = 180
position = 0.4, -0.8, -0.20

[ 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, -0.25

[ 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
01-31-2008, 09:39 PM,
#14
 
You should have commit access to the data repository now.
Reply
02-01-2008, 09:12 PM,
#15
 
Quote:Error in svnX::

svn: Commit failed (details follow):
svn: MKACTIVITY of '/svnroot/vdrift/!svn/act/c95ba77a-2245-0410-b7e0-8b92a386739c': authorization failed (https://vdrift.svn.sourceforge.net)

Sorry! :-(

Quote:Update: Didn´t know what happens, but with rapidSVN the file is commited! I hope nothing ist destroyed! ;-)

Actual Version 05: with blender-file, Ferrari-data and -pictures corrected mass distribution and dimensions.

Seems to be a little too fast: Nuerburgring about 7:40; i found a 8:04 for 360 Modena. May be the tyres are slicks... :-)
Easy to drive.
ABS can kill the engine!?

Quote:File now in svn: http://vdrift.svn.sourceforge.net/viewvc...r?view=log
Reply


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