Less rear tire pressure less front tire pressure more rear tire pressure try to get tire temps within 10 degrees across the face of the tire. Car suspension news newspapers books scholar jstor april 2010. If you dont have any of his books, then get this one. Online shopping from a great selection at books store.
If you are considering buying high performance handling for street or track and you want to read knowledgable information on suspension it would be worth giving dons book a miss. Since the shock and sway bar are mounted inboard, closer to the pivot point, they do not move as much as the contact patch when the lower control arm swings. Tuning can be accomplished by adjusting the shock absorber, most often while still on the car. Academy how to set up and utilize the rear suspension system on a tube chassis, 4link drag racing vehicle. Thank you for reading our comprehensive suspension setting guide many people just concentrate on lowering the car and assume that stiffer springs and the lower ride height will improve handling. Race car suspension setup faster lap times through better suspension tuning and development see our new web site on suspension set up. Nov 01, 2000 wheelhop is less likely on productionbased sports cars with an independent rear suspension because the center section of the axle is hung by the chassis, but it can still occurespecially if an. Maybe youre fast, but with a good setup, youll be faster. Usually adjustable vehicle parts include shock absorbers and antiroll bar suspension.
Choose from four styles and three colors of ladders bars, or choose from five styles and three finishes of 4link. Suspension measurements used in the suspension tuning spreadsheet. Drag brakes, shocks, and suspension tuning chevy high. Car tuning suspension brake setup road course circle. Steel body double adjustable rear shock adjustment. Now have a friend lift up slightly on the rear of the bike, slowly letting it settle. Gentlemen, what is the correct suspension setup for hitting lots of whoops in regards to compression and rebound.
This website has grown far beyond my original intentions of helping the shadetree mechanic in understanding a drag racing suspension in simple terms and diagrams. Apr 15, 2008 sportbike suspension tuning is an outstanding primer on a complex subject, and trevitt leads us logically from ignorance to wisdom. I personally use 35mm for road and a few track days use. Competition car suspensions are a vital ingredient for winning performance. I have heard of one called racing by the numbers, but i cant find it anywhere. This helps you compare your ride height settings repeatedly. Can someone give me a definitive answer on how i want my cars set up to maximize traction. Active rear suspension top link bracket port city racecars.
We have advised on all types of cars in circuit racing, rally, tarmac rally, super sprint. Sep 10, 2005 suspension tuning guide street bike or road racing applications with incorrect suspension setup, tire wear is increased and handling suffers, resulting in rider fatigue. Apply settings in small steps and try to do only one or two at a time. Add the frustration factor and it just makes sense to properly.
Forum main tech helprace shop suspension settings for riding whoops. Drag racing books drag racing software jerry bickel race cars. Our frame rails are of universal design, making them adaptable to any car from pro street to drag race. Afcos drag race shock tuning guide provides the basic road map to making your car hook and book. Aftermarket suspension clips with a huge range of adjustment for instant center and antisquat adjustment are offered by many companies for. Chassis tuning with dampers nasa speed news magazine. Lift bars, slapper bars, super stock springs, leaf links, ladder bars, thre.
In any case, changing the valving of shocks overall, in bump only or in rebound only, can change the handling of the car and improve lap times. Suspension tuning is a critical part of getting the ultimate performance package, it is even possible to have a more competitive car then a rival with superior upgrades by having a well balanced set up, which maximises the available grip levels. Jerry bickel race cars gives racers the technology to win. Having said that, a club racer expecting to learn how many clicks of rebound will cure his racecars entry understeer in turn 4 of his home course will be disappointed. High performance drag racing suspension components. Andrewt march 06, 2014 outside of having your suspension tuned and setup by a professional, you can fine tune your dirt bike. Sportbike suspension tuning is an outstanding primer on a complex subject, and trevitt leads us logically from ignorance to wisdom. Ive been lucky enough to be involved in motorsport since 1984. Suspension components are the crux of our business. Lap times can be dramatically slower and overall safety for both street and race enthusiasts is another issue. So what are the ins and outs of tuning your suspension for drag racing. Tuning 4 link rear suspensions can make a car launch quicker and use less horsepower to do it.
Be sure to check out the other videos on alignment. The following adjustments are based with all sweeps or clicks starting from a full tight adjustment clockwise position. Drag racing books drag racing software jerry bickel. With over 50 years of drag racing experience the joneses cover everything from the proper way to haul your drag race car to the importance of utilizing data acquisition in this second edition of the rick jones chassis tuning guide. How to build a winning drag race chassis and suspension. Even the ride height of the front and rear suspension will have an effect on down force generation, with a rake effect yielding higher levels front lower than the rear. Mar 12, 2015 suspension basics and drag racing dynamics march 12, 2015 by muscle car diy this chapter explains the basic physics occurring on the starting line when you launch your car, along with why it does or doesnt do what it should. In septembers how it works, strange engineering talks about drag brakes, shocks, and suspension tuning to help you get max hook and traction. Setting motorcycle rear suspension sag 12122018 10.
Remember, if a car is standing on its back bumper, it may be getting maximum traction off. Rear suspension guide tech, terminology popular hot. This book offers quite a bit of history on the progression of auto racing suspension and it talks about the differences between various suspension types. Sorbo operates his current tuning and personal coaching operation edventure racing from his shop in southern california, and is often found at race tracks across the western united states and beyond. In the late 90s, after 20 years in racing, we began our search for ideas, and started our systems based suspension set ups in the workshop, followed by track testing to check our work. Wheelhop is less likely on productionbased sports cars with an independent rear suspension because the center section of the axle is hung by. The average of these two measurements is the true race sag. With out suspension upgrades, it would not be possible to adjust or fine tune the suspension to maximise this potential. Nov 08, 20 in septembers how it works, strange engineering talks about drag brakes, shocks, and suspension tuning to help you get max hook and traction. Avoid doing several changes andor large adjustments at one time as this may well produce an undesired result and will make it more difficult for you to fine tune your car. Remember, if a car is standing on its back bumper, it may be getting maximum traction off the line but it. Suspension tuning is one of the most important way to decrease your lap time.
Highperformance handling for street or track and millions of other books. The more rider sag you have, the softer the bike suspension will be. For the most part, tuning with shocks is considered a finetuning adjustment once the chassis is setup and. Turn your daily driver, weekend fun ride, or track car into a cornercarving. The best chassis shop for drag racing books and drag racing software to help with your race car setup and suspension tunning. Feb 27, 2006 a watts link is far more adjustable and allows for better tuning of your rear suspension compared to a panhard bar.
All rear shock baselines are with shock mounted so there is 2 of travel in either direction and an ic of about 4648 long and 68 high. Antisquat is generally used on the rear suspension of the car and refers to the angle of. Griggs racing offers its street torquearm suspension with a. If you feed inspired to help me stay motivated paypal. Coilover shocks well suited to street usage no brand names are not drag racing shocks. Tuning your rear suspension sag for the first time might seem intimidating, but go through it several times and youll find that it doesnt take long or is too difficult. A top racing suspension company suggest that rear wheel rider sag should be around 3040mm and static sag should be around 510mm.
Aug 27, 2015 part 6 in our series of tutorial videos that explain how to set up your rear suspension takes a look at 4link basics, set up and adjustments. The book contains detailed information on the setup of pretty much all different types of front and rear suspension systems for drag race launch. Classic motorcycle repair suspension tuning and chassis. Increase front or reduce rear antirollsway bar settings. Part 6 in our series of tutorial videos that explain how to set up your rear suspension takes a look at 4link basics, set up and adjustments. The rest of this article will explain how suspension tuning works and how you can apply it to your own vehicle. The tires contact patch swings through an arc whose pivot point is the lower control arms inner pivot. Lindemann engineering shares space with edventure racing. I bought this book because it was one of only two suspension books i found on the kindle shop. First, required settings for drag racing applications vary greatly depending upon vehicle weight, weight distribution, suspension geometry and travel, horsepower, and available traction. You give it some gas, the front of the car comes up as weight is transferred to the rear tires to aid traction. Their purpose is to support the weight of the car and absorb bumps. Very latest technical knowhow on suspension set up and testing for racing and performance road cars.
No one can predict the perfect set up, even for a spec formula where much of the suspension is fixed by the rules. Be sure to check out the other videos on alignment, pinion angle, preload, antiroll bar and ride height if you havent already. Suspension tuning guide street bike or road racing applications with incorrect suspension setup, tire wear is increased and handling suffers, resulting in rider fatigue. The tuning of suspensions involves finding the right compromise. Design, construction, tuning 3rd revised edition by staniforth, allan isbn. The second video in a series to help people understand acceleration and weight transfer as it relates to efi tuning. Jun 15, 2019 suspension tuning is one of the most important way to decrease your lap time. Springs are one of the major components of the suspension in any vehicle.
For the most part, tuning with shocks is considered a fine tuning adjustment once the chassis is setup and. Simple but effective, the spring can be set at various strengths which are measured by how much weight the spring can take. Try to find settings that make the vehicle comfortable for you. Mar 14, 2005 i am looking for suspension design books that get into proper design for roll center, tire scrub, bump steer, etc. Tuning your fourlink suspension system drag racing 351c. The art and science of race car development and tuning. A guide to tuning your fourlink suspension system posted by wayne scraba on april 23, 2015 at 2.
The first 11 chapters in this manual, 26 pages, represent the most practical information yet presented about racing shock absorbers. I am looking for suspension design books that get into proper design for roll center, tire scrub, bump steer, etc. Part 6 in our series of tutorial videos that explain how to set up your rear suspension takes a look at basic 4link set up and adjustments. If i am using a rwd car do i want my rear high and front low like rl, what about spring rates and anti roll bars etc, do these things have any effect at the strip. Tuning your fourlink suspension system drag racing.
Stiffer springs andor shocks, both front and rear, will generally improve handling. The local suspension experts recommended a 600lb rear spring and a set of. This website has very hard to find valving information ever wondered how to make your bike handle properly. Reduce front or increase rear antirollsway bar settings.
I want any good book, but one specifically about long travel off road would be great. The design of front and rear suspension of a car may be different. Our weight transfer worksheet is explained in detail. Browse the amazon editors picks for the best books of 2019, featuring our favorite. Stepbystep racecar setup guide paradigm shift driver. Design, construction, tuning hardcover illustrated, 16 aug 1999. However this many vary depending on your bike and manufacturer. The other, by des hammill, i felt was far more informative. Rear suspension series covers rear end alignment, pinion angle, preload, antiroll bar, ride height, basic 4link settings. The rick jones chassis tuning guide, second edition. From planning a course of modifications to installing parts to tuning handling characteristics. Suspension is the system of tires, tire air, springs, shock absorbers and linkages that connects.
You need at least 45% of the cars weight on the rear wheels to make a 4 link suspension work properly. Griggs racing offers its street torquearm suspension with a nonadjustable. Suspension setup and suspension settings and fine tuning. Sep 06, 2011 so what are the ins and outs of tuning your suspension for drag racing. Offroad motorcycle suspension tuning and simplified valving diagnostics. Suspension isnt always that confusing, unless you jump in in the middle and try to create some magic. Sep 05, 2007 tuning your tires and suspension hooked. Shocks for drag racing i feel that good quality double adjustable shock absorbers are one of the most valuable suspension tuning aids there is and is money well spent. Be sure there is no loose or bending in the suspension or in the steering components before attempting to tune your vehicle. Whether you are considering modifying an existing suspension or constructing a new one from the ground up, these books can help by providing the concepts, the math, and the illustrations required for a thorough understanding. In motorsport, the racing setup, car setup or vehicle setup is the set of adjustments made to the.
A common problem with high horsepower cars running too little as is that the suspension will cause the rear of the car to squat. Tips, tricks, and indepth info for ultimate starting line bite while todays performance world offers plenty of ways to make big power, selecting. Its thawing out and drying up where i live and ill have a few weeks of a whooped out sand track and a whooped out trail loop to ride. Fine tuning your suspension setup for your driving style. Which makes you faster, so you win, get famous, and live happy ever after so, lets get into it and find out how to do it note. We pour higher technology into every component we offer. Tuning for the track suspension tuning tech modified. The qm universal 4link rails is the perfect way to narrow the rear of your chassis to accept extrawide racing tires. A watts link is far more adjustable and allows for better tuning of your rear suspension compared to a panhard bar. Tuning 4 link rear suspensions for the drag strip custom. This is the first of a three part series from chris alstons chassisworks on tuning and calibrating for better drag race performance we all want to get the best performance out of our drag vehicle, and a properly tuned drag race suspension enables the vehicle to launch straight while transferring weight to the.
Jan 23, 2015 brian lohnes 20 drivetrain tech, 20 tech story, bangshift 20 comments off on tech tips. Read how tuning your car for the track can greatly improve your lap times and track experience. If the two measurements are more than 5mm different, the rear suspension linkage assembly is sticking and must be serviced. Lengthening the distance between the front and rear wheels gives a smoother ride on a straight line. Port city racecars is a complete racecar facility, manufacturing championship winning chassis and quality race parts along with a fully stocked parts warehouse from the industrys leading manufacturers.
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