Book on 4 link drag racing suspension design

Package includes electronics and software to record drag racing vehicle performance. Drag racing suspension leading drag racing chassis. To understand how a 4link can be made to provide such handling, you must first understand a few basics about rear suspensions. Robs rod shop drag racing suspension episode 1 basic 4 link duration. Adjustable 4link suspension system leading drag racing. To understand how a 4 link can be made to provide such handling, you must first understand a few basics about rear suspensions. Suspension geometry is important to a quality driving vehicle, and instant center is the foundation of any linktype suspension.

The upright or knuckle attaches the wheel, brake rotor, hub, brake caliper and steering arm to the vehicle as shown in diagram ku1 below. Choose from jegs, competition engineering and other high strength 4 link suspension kits or replacement parts. Get the top car design, plans, building and customizing books available. Also featured are laser cut frame and housing brackets with 58 holes for greater strength. Add a 4 link suspension kit to your car or truck to add performance and adjustability to your suspension. These systems are commonly found on vehicles used for the sport of rock. A 4link suspension system is commonly used to replace leaf springs and shocks in vehicles to provide much greater stability while cornering, greater tire contact and traction for drag racers, and reduces body roll in lifted offroad trucks and suvs. Computer program to simulate and analyze rear suspension 4link setups for instant. Rear suspension guide tech, terminology popular hot.

Drag racing books drag racing software jerry bickel race cars. And for drag racing, a twolink would work well theres no cornering in drag racing or a fourlink with 18 to 24inchlong bars and an ic thats in the middle of the chassis and 6 to 10 inches. Four link suspension drag race four link suspension use spherical rod ends for strength and extreme adjustability. Thats where i started, and i apprenticed under a guy named mark constantine at autofab racecars. The popularity of the 4 link suspension is due primarily to its ability to let the race car turn freely in the middle of the corner without compromising forward bite. Rear suspension series covers rear end alignment, pinion angle, preload, antiroll bar, ride height, basic 4 link settings. Angle and driveshaft angle change, antisquat %, and more for drag racing. It includes basic theory on aerodynamic lift and drag, testing techniques, flow visualization.

Drag race and pro street suspension systems, rear 4link suspension drag. The lower control arms are built from the same diameter 4 chromemoly as the companys fourlink suspension systems. Academy how to set up and utilize the rear suspension system on a tube chassis, 4 link drag racing vehicle. Tuning your fourlink suspension system drag racing 351c. Design and manufacture of an adaptive suspension system. Drag race 4link suspensions chris alstons chassisworks. The threelink setup another suspension type common on the racetrack but not seen very much on street cars, is the threelink.

If your car wheel stands too much, you can angle the 4 link bars closer together at the front to move the instant center closer to the rear of the car. The key to any successful acceleration contest is traction. Mar, 2015 this chapter looks at muscle cars with rear suspension systems using coil springs with two upper and two lower control arms. The 4link is a fixed factor with the chassis and has the ride height locked in. Welcome to the home of great handling and ride quality. The factory five 4link rear suspension is a great value it is the standard solidaxle rear suspension in the mk4 roadster, type 65 coupe, and 33 hot rod. Used by many of the best teams in drag racing, chassis master is easy to set up and input information. Each laser link comes complete with grade 8 hardware. It provides a stable platform from which to control the vehicle. When bolted in place, these jigs maintain the proper spacing between your 4link brackets while you weld them together. Over the years, drag racers with door cars have gone through all sorts of suspension arrangements. We go indepth with jerry bickel and curt perry from chassis engineering to. Quartermax 4link kits offer the highest quaility and best value of any kits on the market. On top of the book, we have started a youtube channel that will be dedicated to general automotive and suspension subjects.

Aside from building hot rods, i also build professional drag racing chassis. Mar 06, 2007 how to build a winning drag race chassis and suspension. Design of three and four link suspensions for off road use. Department of mechanical engineering, union college advisor. Track all chassis information including corner weights and center of gravity.

A full explanation as to why the instant center is important is a. There is no comparison to any other 4 link software available. Four link kits visit applied racing technology for a full range of qualtiy drag racing components. Computer program to simulate and analyze rear suspension 4link setups for instant center, pinion angle and driveshaft angle change, antisquat %, and more for drag racing. It provides a way to isolate the chassis and driver from the shocking jolts that the tires experience going over anything but a glasssmooth surface. Tuning your fourlink suspension system drag racing. Hes authored five howto books and written over 4,500 tech articles that. Drag racing books drag racing software jerry bickel.

Heavy duty rod ends are a must on any 4 link that will take right pedal abuse. I addressed the zlink or watts link same thing which is what is used on the typical jacobs ladder design. Quartermile chaos looks at the treacherous side of drag racings golden age. Be sure to check out the other videos on alignment, pinion angle, preload, antiroll bar and ride height if you havent already.

A newer style that has come stock in many vehicles and that works well as an allaround type of suspension. Apr 01, 2008 and for drag racing, a two link would work well theres no cornering in drag racing or a four link with 18 to 24inchlong bars and an ic thats in the middle of the chassis and 6 to 10 inches. Apr 23, 2015 over the years, drag racers with door cars have gone through all sorts of suspension arrangements. If your car wheel stands too much, you can angle the 4 link bars closer together at the. The angled upper links hold the axle in place side to side, so a panhard bar is not needed. A guide to tuning your four link suspension system posted by wayne scraba on april 23, 2015 at 2. Design and analysis of suspension system for an all terrain vehicle shijil p, albin vargheese, aswin devasia, christin joseph, josin jacob abstract in this paper our work was to study the static and dynamic parameter of the suspension system of an atv by determining and analyzing the dynamics of the vehicle when driving on an off road racetrack. Davis, benjamin design of three and four link suspensions for off road motorsports.

Design and manufacture of an adaptive suspension system a major qualifying project report submitted to the faculty of worcester polytechnic institute this report represents the work of wpi undergraduate students submitted to the faculty as evidence of completion of a degree requirement. Feb 27, 2006 the three link setup another suspension type common on the racetrack but not seen very much on street cars, is the three link. However, keep in mind that chassis roll causes the link angles to change. Relive drag racings dangerous past in this softcover edition of a previous best seller. These cars include gm intermediates built in 19641977 abodies, 19781988 gbodies, 19941996 impala ss cars bbodies, and 19792004 ford mustangs foxbodies. When you or your chassis builder installs the rearend in your car with a fourlink setup, thats the. The suspension on a vehicle serves multiple purposes. Historically, three link suspensions have not been common with oems. We have complete lowering kits for a roadhugging sport stance, and lift kits to accommodate massive. Chassis engineering explains the complex principles of suspension geometry and chassis design in terms the novice can easily understand and apply to any project. I use this program almost daily, both in my design. Of all of the systems, the most common youll see today is the equal length fourlink, probably followed by the ladder bar. David hodgson this thesis outlines the process of designing a three link front, and four link rear suspension system.

The popularity of the 4link suspension is due primarily to its ability to let the race car turn freely in the middle of the corner without compromising forward bite. Jerry bickels 4link wizard professional version jerry bickel race cars, in cooperation with etc, inc. Computer program to simulate and analyze rear suspension 4 link setups for instant center, pinion angle and driveshaft angle change, antisquat %, and more for drag racing. Air suspension design book spreading airbag suspension. Calculates all possible instant center locations plus percentage of rise and squat. The drag race bars when set up correctly form an open ended triangle to permit you to change what is called the cars instant center theoretical point that the tires pushto achieve the ultimate in traction control. From infinitely adjustable 4 link brackets to heavy duty 4 link bars, antiroll bars, sway bars, wishbone and housing locator kits all the way to penske shocks, nitrogen fill kits, strange engineering components and more, you can find what it.

Enter your mobile number or email address below and well send you a link to. How to build a winning drag race chassis and suspension. They keep your rear on center but do not put a load on the 4link, such as with a diagonal type, and work independently of the 4link. The housings were available in widths ranging from 22 inches all the way out to 62. They are the best for all 4link applications whether competition or pro street.

Previously i had begun this on another board and it got too large. Rear suspension series covers rear end alignment, pinion angle, preload, antiroll bar, ride height, basic 4link settings. 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 4link suspension system is infinitely adjustable with 18 inch increments thereby allowing hundreds of instant center options. We pour higher technology into every component we offer. Chassis master software leading drag racing chassis. Also, all mustangs from 79 on use a triangulated 4 link. In almost all racing aplications the top bar is pointed down to establish the instant center for best accelerating behavior. Make sure to subscribe to our channel to be updated with. We stock a huge assortment of shocks, struts, and coil and leaf springs, so whether you want a smooth street ride, responsive race handling, or rugged offroad control, you can get it here.

There is no comparison to any other 4link software available. Additionally, you can quickly change instant centers without affecting pinion angle, preload, or wheelbase. We can actually get the pivot points and the antisquat characteristics of the two to be the same. Almost 200 rare and stunning photographs from the late 1960s and earlytomid 1970s capture terrifying fires, explosions, and crashes, all byproducts on the quest to go faster. Four link kits create a definitive center for a rear suspension, and are commonly used with a. Choose from four styles and three colors of ladders bars, or choose from five styles and three finishes of 4link. They keep your rear on center but do not put a load on the 4 link, such as with a diagonal type, and work independently of the 4 link.

Academy how to set up and utilize the rear suspension system on a tube chassis, 4link drag racing vehicle. Binding is eliminated due to our 4link arch design. Best car chassis, suspension, aerodynamics design books. The 4link calculator lets you input, view, save, analyze and compare your 4link rear suspension geometry. The best chassis shop for drag racing books and drag racing software to help with your race car setup and suspension tunning. Aug 02, 2017 pinion angle change is an important factor to take into consideration when designing your own suspension.

Record, save, graph, report, correct, analyze and compare drag racing data like clutch or converter slip, acceleration rate, tire spin, torque, hp, exhaust temps, pressures, etc. This is a 4 link suspension with the two upper links angled in toward the differential. Drag racing suspension tim mcamis performance parts. Drag racing fourlink design greglocock automotive 27 nov 02 17. Air suspension design book, vol 1 link based rear suspension.

Fourlink kits create a definitive center for a rear suspension, and are commonly used with a. Sign up for our newsletter to keep up to date on the progress. Jerry bickel race cars gives racers the technology to win. Jerry bickel race cars, in cooperation with etc, inc. Rear suspension design three link four link two link. Suspension components are the crux of our business. When building a 4link suspension, the lengths of the links, their positioning, and the angles at which they are mounted, will all determine how the suspension affects the vehicle chassis under acceleration, braking, and cornering. Feb 14, 2017 suspension geometry is important to a quality driving vehicle, and instant center is the foundation of any link type suspension.

A good starting point for both links is 15 upwards to the front. Guide to setting up a late model dirt chassis and 4 link suspension. 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. Right the drag race eliminator ii 4 link rear suspension featured doublesheer, adjustable lower shock mounts designed to allow finetuning of the rear ride height. Rearwheeldrive cars with rear coil springs and two upper and two lower control. Drag racing four link design greglocock automotive 27 nov 02 17. They are the best for all 4 link applications whether competition or pro street. Lift bars, slapper bars, super stock springs, leaf links, ladder bars, threelinks, fourlinks, and torque arms there may be others too, but its a start. Right the dragrace eliminator ii 4link rear suspension featured doublesheer, adjustable lower shock mounts designed to allow finetuning of the rear ride height. Chassis master software leading drag racing chassis builder. Our 4link kits set up your vehicle at stock ride height. 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 rock slayer offroad 4link kits eliminate the panhard bar its a true 4link. But there are also whole series of street and stockperformance vehicles including pro street, pro stock, sportsman and bracket, stock and super stock.

Just because the pinion is set perfectly at rideheight doesnt mean it is going to stay. A fullyadjustable 4 link suspension allows you to move the instant center not only up or down, but also forward or back by increasing or decreasing the angle between the bars. So whether its a 2,000plus hp drag car, or a 450 hp street car, these arms can handle whatever the car owner throws at them. From infinitely adjustable 4link brackets to heavy duty 4link bars, antiroll bars, sway bars, wishbone and housing locator kits all the way to penske shocks, nitrogen fill kits, strange engineering components and more, you can find what it takes to put together a stateoftheart rear suspension. Drag racing encompasses many types of amateur and professional specialty racing vehicles including door cars, funny cars, motorcycles, dragsters, and pro modifieds. According to suspension theory that car should be very wheel stand prone, because the point of actual instant center is far forward in front of the car and is also below the theoretical line of instant center. Hundreds of photos and illustrations illustrate what it takes to design, build, and tune the ultimate chassis for maximum cornering power on and off the track. 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. This is a good book written by a known authority on automotive systems and operation. This type is used not only in drag racing but in other motor sports as well.

Suspension here you will find only the highest quality drag racing suspension components available. Dave morgan, who wrote the box door slammers, the chassis book. Upper link angles from 15 to 18 on the right and 10 to 15 on the left provide good forward bite. We use the upper links on a 4link suspension to enhance the forward bite. This chapter looks at muscle cars with rear suspension systems using coil springs with two upper and two lower control arms. Here you will find only the highest quality drag racing suspension components available. A 4 link suspension system is commonly used to replace leaf springs and shocks in vehicles to provide much greater stability while cornering, greater tire contact and traction for drag racers, and reduces body roll in lifted offroad trucks and suvs. There are sections below that do separate the different ideas for a stock suspension car vs a true 4 link car and the reasoning will be explained below. A stock suspension car that uses 4 trailing arms is a true 4 link and can be treated, plotted, etc, as a true 4 link car so the savy racer looking for an edge can benifit from this information. Race car ride height 101 with jerry bickel and chassis engineering. The upright also locates these components in space. Pinion angle change is an important factor to take into consideration when designing your own suspension.