iRacing Lamborgini Huracan GT3 EVO User Manual Download Page 16

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L AMBORGHINI HURACÁN GT3 EVO  |  USER MANUAL

TOE-IN

Toe is the angle of the wheel, when viewed from above, relative to the centerline of the chassis.  Toe-in is when the front of the 
wheel is closer to the centerline than the rear of the wheel, and Toe-out is the opposite.  On the front end, adding toe-out will 
increase slip in the inside tire while adding toe-in will reduce the slip.  This can be used to increase straight-line stability and turn-in 
responsiveness with toe-out.  Toe-in at the front will reduce turn-in responsiveness but will reduce temperature buildup in the front 
tires.

FRONT MASTER CYLINDER

The Front Brake Master Cylinder size can be changed to alter the line pressure to the front brake calipers. A larger master 
cylinder will reduce the line pressure to the front brakes, this will shift the brake bias rearwards and increase the pedal effort 
required to lock the front wheels. A smaller master cylinder will do the opposite and increase brake line pressure to the front 
brakes, shifting brake bias forward and reducing required pedal effort. 7 Different master cylinder options are available ranging 
from 15.9 mm / 0.626” (highest line pressure) to 23.8 mm / 0.937” (lowest line pressure).

REAR MASTER CYLINDER

The Rear Brake Master Cylinder size can be changed to alter the line pressure to the rear brake calipers. A larger master cylinder 
will reduce the line pressure to the rear brakes, this will shift the brake bias forwards and increase the pedal effort required to 
lock the rear wheels. A smaller master cylinder will do the opposite and increase brake line pressure to the rear brakes, shifting 
brake bias rearward and reducing required pedal effort. 7 Different master cylinder options are available ranging from 15.9 mm / 
0.626” (highest line pressure) to 23.8 mm / 0.937” (lowest line pressure).

BRAKE PADS

The vehicle’s braking performance can be altered via the Brake Pad Compound.  The “Low” setting provides the least friction, 
reducing the effectiveness of the brakes, while “Medium” and “High” provide more friction and increase the effectiveness of the 
brakes while increasing the risk of a brake lockup.

CROSS WEIGHT

The percentage of total vehicle weight in the garage acting across the right front and left rear corners. 50.0% is generally optimal 
for non-oval tracks as this will produce symmetrical handling in both left and right hand corners providing all other chassis settings 
are symmetrical. Higher than 50% cross weight will result in more understeer in left hand corners and increased oversteer in 
right hand corners, cross weight can be adjusted by making changes to the spring perch offsets at each corner of the car. 

LAMBORGHINI HURACÁN GT3 EVO  |  ADVANCED SETUP OPTIONS  |  CHASSIS

Summary of Contents for Lamborgini Huracan GT3 EVO

Page 1: ...LAMBORGHINI HURAC N GT3 EVO U S E R M A N U A L...

Page 2: ...8 Dash Pages 7 Loading An iRacing Setup 6 Magnus Qual 9 Day 7 Qual 10 Tire Settings 12 Shift Lights 11 Chassis 15 Pit Limiter 11 Aerodynamics 13 Tires Aero 12 Front End 15 In Car Dials 17 Rear Corner...

Page 3: ...he Hurac n GT3 with improved aerodynamics developed in conjunction with Dallara and a powerful 5 2 liter V10 engine 2020 was a banner year for the car with a clean sweep of the IMSA WeatherTech Sports...

Page 4: ...MBORGHINI HURAC N GT3 EVO TECH SPECS ALUMINUM UNIBODY CONSTRUCTION WITH CARBON FIBRE BODYWORK 5 2 LITER V10 L E N G T H 4550mm 179 2in D I S P L A C E M E N T 5 2Liters 317CID T O R Q U E 400lb ft 545...

Page 5: ...trends over a number of laps Once you are confident that you are nearing your driving potential with the included baseline setups read on to begin tuning the car to your handling preferences GETTING...

Page 6: ...ion For example a setup for Talladega will pass at Daytona but likely will not pass at Bristol If you would like to customize the setup simply make the changes in the garage that you would like to upd...

Page 7: ...changeable TOP RIGHT Current ABS setting illuminates blue when ABS is active CENTER TOP LEFT Road speed km h or mph CENTER TOP RIGHT Engine rpm CENTER BOTTOM LEFT Current lap time CENTER BOTTOM RIGHT...

Page 8: ...geable TOP RIGHT Current ABS setting illuminates blue when ABS is active CENTER TOP LEFT Road speed km h or mph CENTER TOP RIGHT Engine rpm CENTER BOTTOM LEFT Current lap time CENTER BOTTOM RIGHT Diff...

Page 9: ...ER MID LEFT BLUE BOX LF tire pressure bar or psi CENTER CENTER TOP LEFT GREEN BOX LF tire temperature Celsius or Fahrenheit CENTER CENTER TOP RIGHT GREEN BOX RF tire temperature Celsius or Fahrenheit...

Page 10: ...ng this is not changeable TOP RIGHT Current ABS setting illuminates blue when ABS is active CENTER TOP LEFT Current lap time CENTER CENTER Road speed km h or mph CENTER TOP RIGHT Difference to best la...

Page 11: ...displays across the dashboard along with the center 6 shift light LEDs flashing blue SHIFT LIGHTS 1 GREEN 6650 rpm 2 GREEN 6800 rpm 3 GREEN 6950 rpm 4 GREEN 7100 rpm 1 YELLOW 7250 rpm 2 YELLOW 7400 rp...

Page 12: ...from lower pressures Cold pressures should be set to track characteristics for optimum performance Generally speaking it is advisable to start at lower pressures and work your way upwards as required...

Page 13: ...REMAINING The amount of tread remaining on the tire once the car has returned from the pits Tire wear is very helpful in identifying any possible issues with alignment such as one side of the tire wea...

Page 14: ...telemetry at any point on track and input that value into the Front RH at Speed setting It is advisable to use an average value of the LR and RR ride heights as this will provide a more accurate repre...

Page 15: ...meter settings 6 ARB blade options are available ranging from 1 1 softest to 3 3 stiffest ARB OUTER DIAMETER The ARB Anti Roll Bar size influences the stiffness of the front suspension in roll such as...

Page 16: ...r size can be changed to alter the line pressure to the rear brake calipers A larger master cylinder will reduce the line pressure to the rear brakes this will shift the brake bias forwards and increa...

Page 17: ...ol completely Positions 3 and 4 are the manufacturer recommended baseline settings More intervention will result in less wheelspin and less rear tire wear but can reduce overall performance if the tra...

Page 18: ...in car dashboard page 4 display options are present with 2 options intended for race situations of day and night and 2 for qualifying The race options are identical in terms of displayed information...

Page 19: ...asing the spring perch offset will result in lowering this corner of the car while reducing the spring perch offset will raise this corner of the car These changes should be kept symmetrical across th...

Page 20: ...chassis response it is important to avoid situations where the shock is too slow in rebounding as this will result in the tire losing complete contact with the track surface which can induce or exacer...

Page 21: ...n high and low speed cornering As an example case a car which suffers from high speed understeer but low speed oversteer could benefit from an increase in rear spring stiffness This will allow for a l...

Page 22: ...apability however it is typical to run slightly reduced rear camber relative to the front This is primarily for two reasons firstly the rear tires are 25 mm 1 wider compared to the fronts and secondly...

Page 23: ...oversteer This can result in a less responsive feel from the rear end especially in transient movements but grip across the rear axle will increase 4 configurations of ARB diameter are available and...

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