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11-17-2005, 02:27 PM #1MMPGuyGuest
Bruce Griggs “Performance Facts” Chassis
John George (Chicane23.com) and Modern Mustang Performance Presents:
Bruce Griggs “Performance Facts” Chassis Seminar
Dispelling the Myths of High-Powered Rear-Drive Chassis Dynamics
Bruce Griggs has over 40 years experience in motorsports, racing, building and modifying
cars that win. His engineering experience and the cars and parts he produces have netted
many victories and championships in a variety of racing venues from SCCA, and NASA to
USAC and NASCAR, as well as daily drivers that ride better than stock yet handle as well as
the best race cars. Although a Road Racing Mustang specialist of late, the subjects he will
discuss applies to all forms of rear drive chassis performance.
Mr. Griggs will present a primer on vehicle dynamics, and concisely explain why his cars
work so well. Admission is $35.00 in advance, and $50.00 at the door. However it is free to
the dealers and owners of GR40 Mustangs. No literature will be supplied. It is
recommended that you take notes if you wish to learn the subject well enough to benefit from
it. The seminar should consume 3 to 4 hours, depending on questions and resulting
discussions.
Preliminary Discussion:
1. General discussion / Chassis stiffening methods. How much is enough?
2. Sprung Mass, Free Body Defined
3. Tire Construction, Slip Angles and Applied Camber
Break for Questions
Volume 1 Geometry and Design:
1. Roll centers, axes, and locations. Where should they be?
2. Anti squat and migration how much is enough?
3. Roll center and migration. How to control?
4. Anti dive. How much is enough?
5. Anti Lift. How much is enough?
Break for Questions
6. Ackerman What is it? How much is enough?
7. Camber pattern and track change
8. Spring rates and wheel rates, progression/digression
9. Roll / Anti-roll
10. Roll couple
11. Roll couple distribution
12. Ride height, importance of. What should it be?
13. Caster vs. Kingpin inclination
14. Steering loading vs. Caster/Kingpin inclination. The importance of corner entry
Break for Questions followed by 30 min Break for Refreshments
Answer questions after break.
Volume 2 Suspension Dynamics
1. Spring rates, discussion on roll couple distribution vs. compliance
2. Anti-roll bar design considerations and effects on roll rates and corner segment.
3. Damping, definitions. Critical Dampening vs. Spring Frequencies. High speed and low
speed damping characteristics
4. Affects of Front Rebound
5. Affects of Front Compression
6. Affects of Rear Rebound
7. Affects of Rear Compression
8. Mountings/Friction/Thermal Characteristics.
Break for Questions
Volume 3 Chassis Loading Variables and there effect on design.
1. Engine Torque TorqueArms, 3 links, 4 links, 5 links, Solid axles vs. IRS. Why the debate?
2. Brake Torque, Camber change, balance, temperature curves, trail braking, left foot braking
3. Over center linkage loadings
4. Transitional loading, and its effects on, slip angles. Understeer/Oversteer and drivability
5. Banking and its effect on roll centers and roll couple
Break for Questions
Volume 4 Tuning the Chassis without data acquisition. When do I adjust what?
1. Ride heights
2. Springs rates, spring splits, progressive spring rates
3. Bars
4. Corner weights
5. Tire pressures
6. Brake effects on chassis tuning
7. Power effects on chassis tuning
8. Typical tuning examples
Questions, Conclude
When: December 10, 2005 @ 11:00 am CST
Where: Modern Mustang Performance
2016 Keller Springs Rd. Suite 126
Carrollton, Texas 75006
To register for this event:
Phone: 214-876-5254
Email: tyreed@airmail.net
Email: chicane23@chicane23.com
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12-02-2005, 10:21 AM #2
- Join Date
- Aug 2005
- Location
- North Olmsted, OH
- Age
- 49
- Posts
- 506
Navy Blue Metallic- 2000 Camaro Z28
Are they taping this? It would be if it was offered in DVD.
2000 NBM Camaro Z28
Mods:
SLP Lid & K&N, AHR Headers + 3" catted Y and Mangaflow, !EGR, !AIR, BMR CM STB, ST Front 35mm and Hellwig Adj. Rear 22mm Swaybar, Adj. Rod/Rod PHB, Koni SA's, Ground Control Springs & Adj. Ride height, and HPTuners.
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12-02-2005, 09:16 PM #3
Takes balls to be posting on F-body site, ya think? The guy's got it ass-backwards too - F-body owners free, FORD owners always pay! Besides, what does a FORD guy know about high-powered cars????
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