1. Tires Table 12.1 Principal Chassis Tuning Items a. Different designs, sizes and front/rear combinations b. Tire pressures/tire temperatures c. Stagger (different tire circumference) frequently used across an axle d. Rim widths and offsets (possible track change) e. Static alignment (toe, camber, caster) 2. Static Wheel Loads a. Longitudinal CG location (shifting ballast) b. Lateral CG location (shifting ballast) c. Wedge, diagonal weight jacking, or warp (changes in spring preload) 3. Lateral Load Transfer Distribution (LLTD) a. Roll couple distribution front to rear b. Roll center heights (front and/or rear) c. Ride spring rates d. Anti-roll bars or Z-bars e. Progressive rate springs, linkages and bump stops (Notes: Coupling occurs with ride height changes when progressive rate linkages are used. Cockpit adjustment of LLTD may be provided.) 4. Ride Height and Body Attitude (Roll and Pitch) a. Wheel orientation changes via suspension geometry • Camber curves • Ride (bump)/roll steer • Anti-dive/squat • Steering geometry • Wheel travel b. Aerodynamics (function of ride height and body attitude) Table 12.2 Additional Principal Chassis Tuning Items 1. Aerodynamic Forces and Moments a. Lift/downforce b. Drag c. Pitching and yawing moments (Note: As affected by size, shape, angle of wings, car shape/underbody, internal air flow, etc.) 2. Brakes a. Distribution, front to rear b. Cooling 3. Driveline a. Gearing b. Differential(s), type and functional behavior c. Spool d. Engine performance characteristics 4. Dampers 5. Driver/Vehicle Interface a. Steering ratio b. Pedal forces and movements c. Force feedbacks (kickback, oscillations) 6. Compliances a. Chassis and suspension stiffness maximized by design b. Suspension compliances are not adjustable for tuning (as in road cars)
1. Tires Table 12.1 Principal Chassis Tuning Items a. Different designs, sizes and front/rear combinations b. Tire pressures/tire temperatures c. Stagger (different tire circumference) frequently used across an axle d. Rim widths and offsets (possible track change) e. Static alignment (toe, camber, caster) 2. Static Wheel Loads a. Longitudinal CG location (shifting ballast) b. Lateral CG location (shifting ballast) c. Wedge, diagonal weight jacking, or warp (changes in spring preload) 3. Lateral Load Transfer Distribution (LLTD) a. Roll couple distribution front to rear b. Roll center heights (front and/or rear) c. Ride spring rates d. Anti-roll bars or Z-bars e. Progressive rate springs, linkages and bump stops (Notes: Coupling occurs with ride height changes when progressive rate linkages are used. Cockpit adjustment of LLTD may be provided.) 4. Ride Height and Body Attitude (Roll and Pitch) a. Wheel orientation changes via suspension geometry • Camber curves • Ride (bump)/roll steer • Anti-dive/squat • Steering geometry • Wheel travel b. Aerodynamics (function of ride height and body attitude) Table 12.2 Additional Principal Chassis Tuning Items 1. Aerodynamic Forces and Moments a. Lift/downforce b. Drag c. Pitching and yawing moments (Note: As affected by size, shape, angle of wings, car shape/underbody, internal air flow, etc.) 2. Brakes a. Distribution, front to rear b. Cooling 3. Driveline a. Gearing b. Differential(s), type and functional behavior c. Spool d. Engine performance characteristics 4. Dampers 5. Driver/Vehicle Interface a. Steering ratio b. Pedal forces and movements c. Force feedbacks (kickback, oscillations) 6. Compliances a. Chassis and suspension stiffness maximized by design b. Suspension compliances are not adjustable for tuning (as in road cars)
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Summarize chassis configuration and adjustments for race cars emphasizing the data from the tables below:
Transcribed Image Text:1. Tires
Table 12.1 Principal Chassis Tuning Items
a. Different designs, sizes and front/rear combinations
b. Tire pressures/tire temperatures
c. Stagger (different tire circumference) frequently used across an axle
d. Rim widths and offsets (possible track change)
e. Static alignment (toe, camber, caster)
2. Static Wheel Loads
a. Longitudinal CG location (shifting ballast)
b. Lateral CG location (shifting ballast)
c. Wedge, diagonal weight jacking, or warp (changes in spring preload)
3. Lateral Load Transfer Distribution (LLTD)
a. Roll couple distribution front to rear
b. Roll center heights (front and/or rear)
c. Ride spring rates
d. Anti-roll bars or Z-bars
e. Progressive rate springs, linkages and bump stops (Notes: Coupling
occurs with ride height changes when progressive rate linkages are
used. Cockpit adjustment of LLTD may be provided.)
4. Ride Height and Body Attitude (Roll and Pitch)
a. Wheel orientation changes via suspension geometry
• Camber curves
•
Ride (bump)/roll steer
• Anti-dive/squat
• Steering geometry
• Wheel travel
b. Aerodynamics (function of ride height and body attitude)
Table 12.2 Additional Principal Chassis Tuning Items
1. Aerodynamic Forces and Moments
a. Lift/downforce
b. Drag
c. Pitching and yawing moments (Note: As affected by size, shape,
angle of wings, car shape/underbody, internal air flow, etc.)
2. Brakes
a. Distribution, front to rear
b. Cooling
3. Driveline
a. Gearing
b. Differential(s), type and functional behavior
c. Spool
d. Engine performance characteristics
4. Dampers
5. Driver/Vehicle Interface
a. Steering ratio
b. Pedal forces and movements
c. Force feedbacks (kickback, oscillations)
6. Compliances
a. Chassis and suspension stiffness maximized by design
b. Suspension compliances are not adjustable for tuning (as in road cars)
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