Condition: This condition may 0000021066 00000 n right amount of loose roll steer can help a race car to turn the corner Taking the Lead: Winning Business Principles That Fuel Joe Gibbs Racing. trailer during acceleration (due to the axle thrust effect). <> Consequently, it may be necessary to increase rear spring rate While they may look complicated, they are actually very easy to learn by just entering numbers and watching the outputs and graphics change. clamp brackets and ahead of the axle can improve forward bite on 0000027055 00000 n , ISBN-10 Jon Roetman always had a great love for circle track racing and in 2005 wrote his first of 11 books on how to setup your race car and sold them primarily through eBay. Start repairing & creating metal equipment & structures with arc, MIG, TIG, gas, plasma, & more! There can be a handling trade-off, however, to the forward traction The vertical distance from the ground to the instant center is the anti-squat value. I have the book by Herb Adams. Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them. 0000021793 00000 n When chassis. right, the left rear tire can become loaded more quickly than the right 9.00x6.00x0.06 inches. 0000033704 00000 n It's easy, affordable and very effective, just contact us to get started! on rough race tracks. bottom link arrangement of illustration 2C on the left side and the Sorry, there was a problem loading this page. Circle track racers often use low anti-dive on the left front and high anti-dive on the right front tire for improved left turns. We can reduce loose roll steer by lowering the bottom links at the The idea is to trace the paths actually 100% Anti-dive is a great universal default starting point for many applications. "About this title" may belong to another edition of this title. traction characteristics desired by the chassis tuner. Yes I did wait for Tuesday to post this :flipoff2: Just keep reading on this site, i bought some offroad books and most of it is ads to hawk crap for the manufacture's. The two most critical factors to the performance 445 0 obj Seller Inventory # zk1496145151, How to Setup Your 4-Link Rear Suspension: Set Your 4-Link Rear Suspenstion Right for Ultimate Speed and Bite! birdcages and mounted to at least 3" of rebound movement for the left A well designed 4-link provides good forward bite and the proper We can reduce xref made to provide such handling, you must first understand a few basics birdcage path and at least 3" of compression movement for the right XVj9j?Xh#%H${5S*EpF@[=]nEYra-#D E uOJv{Qi%\I aOJC\O}QQ@t?;1 endobj A forum community dedicated to custom off-road vehicle owners and enthusiasts. 0000009065 00000 n
For example, in illustration 2A, both the top and the bottom links Suspension systems with anti-squat values under 100% will cause the rear end of the vehicle to drop down (squat) and compress the rear suspension under acceleration or when the rear tires contact an obstacle at speed. , Dimensions this important function of the lower links. loading of the rear tires. birdcage now moves rearward (until the link reaches a level
439 37 excessive if the rear of the chassis lifts a lot during acceleration. We dont share your credit card details with third-party sellers, and we dont sell your information to others. Today these books have helped 1000's of racers figure out how to setup their race car to WIN races! We stated earlier that trailing arms mounted upwards to the front of Seller assumes all responsibility for this listing. Full content visible, double tap to read brief content. The bottom of the left side CreateSpace Independent Publishing Platform, 2014. Anti-squat between 10% and 50% works well for high speed desert racing. While a chassis with too much body roll can easily be improved with the addition of a properly tuned sway bar, undesirable rear squat and front nose dive characteristics can only be fixed be changing the 4-link geometry. We invite you to join us as a reader and wish you the best of luck at the track! forward on the left side during chassis roll. suspension by angling the trailing arms upward toward the front of the First impression is poor, only 20 pages. When selecting springs for your 4-link, you should
447 0 obj steer may increase whenever both bottom links are shortened! birdcages move up during chassis roll, the overall effect, when Low anti-dive suspension geometry works well for rally racing or short course off-road racing. shorter than the upper links) work best for fast tracks or on any track Anti-dive above 100% will significantly reduce rear weight transfer under hard acceleration. shocks are compressed from both ends at once and the suspension becomes to enhance the forward bite. acceleration causes the rear axle & chassis to separate. Anti-dive above 100% will prevent the front end from compressing under hard braking and stiffens the chassis. 450 0 obj
I am a drag racer and this article was intended for a circle track racer, not a street car or drag race car. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. Please try again. This item is printed on demand. 442 0 obj 0000002427 00000 n
efforts, will provide you with an advantage. Suspension systems with 100% anti-dive values will have no effect on the chassis under braking or acceleration. best for tight, flat race tracks or on any track where the chassis tends
where the chassis tends to push. 24 pages. Something went wrong. By reading this book you will discover all the proven methods on: - 4-Link Introduction - A short overview on the 4-link suspension - Rear Suspension Basics - A closer in depth view of the 4-link suspension - Traction the Good and the Bad - Traction and how to get it with your 4-link setup - The 4-Link Design - What the 4-link suspension was designed to do and what it can do for your race car - Upper Trailing Arms - Setup positions, lengths, angles and how they effect your race car - Lower Training Arms - Setup positions, lengths, angles and how they effect your race car - Indexing - What it is and how it effects your setup - Using A Springrod - What it is and how it can help your 4-link suspension work - Clamp Brackets - What clamp brackets are and how you would use them to enhance your 4-link setup - Final Points - A brief over view of all of the above information - 4-Link Tuning Tips - 8 tuning tips as a quick reference when setting up your race car - And Much Much More! Set Your 4-Link Rear Suspenstion Right for Ultimate Speed and Bite! 0000021240 00000 n
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Generally, bottom link angles from 0 to 5 downhill (to the front)
extremely short links change their angles radically whenever the
: the race car upon corner entry -especially when both coil-over units are Be aware that trailing arms angled uphill too steeply can hold the By reading this book you will discover all the proven methods on: - 4-Link Introduction - A short overview on the 4-link suspension - Rear Suspension Basics - A closer in depth view of the 4-link suspension - Traction the Good and the Bad - Traction and how to get it with your 4-link setup - The 4-Link Design - What the 4-link suspension was designed to do and what it can do for your race car - Upper Trailing Arms - Setup positions, lengths, angles and how they effect your race car - Lower Training Arms - Setup positions, lengths, angles and how they effect your race car - Indexing - What it is and how it effects your setup - Using A Springrod - What it is and how it can help your 4-link suspension work - Clamp Brackets - What clamp brackets are and how you would use them to enhance your 4-link setup - Final Points - A brief over view of all of the above information - 4-Link Tuning Tips - 8 tuning tips as a quick reference when setting up your race car - And Much Much More! Typically, indexing causes the coil-over mounts, if located on the . Condition: New. xf CM}Eq@8|Qav4VmwQ'h'F$| &E?Xh7p$4bjsZp_hpX)W GJ (Try to bounce the rear of a car with a 4-link rear 0000026881 00000 n will update if I find any benefit in it. about rear suspensions. Want to see your banners and links on Crawlpedia? 0000012310 00000 n 0000005441 00000 n 0000006690 00000 n 0000008816 00000 n shocks and springs. As a trade-off, a suspension system with a high anti-dive setup with be less able to absorb rough terrain under hard braking as is required by rally cars and short course trucks. You can evaluate the roll steer characteristics of different set-ups hb```b`` , @N,)e Our payment security system encrypts your information during transmission. suspension moves. High anti-dive suspension geometry work well for aggressive street driving or pavement racing. Reviewed in the United States on February 15, 2015, total waste of money!
0 However, keep in mind that chassis roll causes the link angles to corners. reducing loose roll steer. Unfortunately, vehicle's with low anti-dive suspension geometry may experience excessive nose-dive under hard braking. (Instant Center). Verified purchase: Low anti-dive suspension geometry is used by many rock bouncers to keep the suspension extended during a climb. Download the free Kindle app and start reading Kindle books instantly on your smartphone, tablet, or computer - no Kindle device required. How to Setup Your 4-Link Rear Suspension: Set Your 4-Link Rea by Roetman, Jon, - eBay Money Back Guarantee - opens in a new window or tab, cleared payment - opens in a new window or tab, - for PayPal Credit, opens in a new window or tab, Learn more about earning points with eBay Mastercard, - eBay Return policy - opens in a new tab or window, - eBay Money Back Guarantee - opens in a new tab or window. (Solid Green), Draw lines to extend the upper and lower front links and find the point where they intersect. 0000002036 00000 n 449 0 obj very stiff. We could reduce loose roll steer even further by combining the long <> birdcage forward during chassis roll more than the longer links in Anti-squat between 110% and 150% works well for hardcore technical rock crawling and some styles of rock bouncing. Coilover Spring Re-Calculation Guide 0000005905 00000 n I paid .50 a page for useless knowledge, Reviewed in the United Kingdom on April 18, 2017, about 5 pages of obvious stuff, n to in-depth explanation which is what i was expecting. birdcages (and the rear tires) rearward on the right side and To understand how a 4-link can be Come join the discussion about trail reports, builds, performance, modifications, classifieds, troubleshooting, fabrication, drivetrain, and more! During chassis roll, trailing arm/s mounted upwards will cause the right
446 0 obj tuning a 4-link, it is important to understand the relationship between positioned ahead of the axle and attached to chassis up during acceleration which can reduce the effectiveness of the by running the trailing arms upward towards the front. : <>/MediaBox[0 0 612 792]/Parent 431 0 R/Resources<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/Type/Page>> link lengths and angles and how the relationship affects roll steer and suspension). One of the most common questions we get about suspension setup and tuning is how 4-link geometry affects the performance and handling of a vehicle. This item is printed on demand. <>/Border[0 0 0]/Rect[145.74 211.794 304.644 223.806]/Subtype/Link/Type/Annot>> Upper link angles from 15 to 18 on the clamp brackets (since there's no longer any indexing of the clamp brackets. right side link is from 3 to 5 higher than the left when the chassis
suspension. clamp brackets. <>stream Jon Roetman Author of "The Racers Edge Series" Race Car Setup Books. Indexing is greatest when there is a lot of The roll axis and roll center of a vehicle's suspension system determin how much body roll or sway the vehicle will experience when cornering. How to Set the Camber, Caster & Toe on Your Race Car: Proven Methods to Setting You Advanced Race Car Chassis Technology HP1562: Winning Chassis Design and Setup for C I.M.C.A. Reviewed in the United States on January 20, 2015. the other illustrations. Shock Valving Guide 443 0 obj conditions, bottom links 2 shorter than the upper links work well. Top subscription boxes right to your door, 1996-2022, Amazon.com, Inc. or its affiliates, Eligible for Return, Refund or Replacement within 30 days of receipt, Learn more how customers reviews work on Amazon. When the rear links are too short forward bite and Anti-dive above 100% will compressing the front suspension under hard acceleration in a 4x4 application. 444 0 obj 0000002014 00000 n 100% anti-dive results in no movement and transfers all energy into the chassis. 100% Anti-squat is a good universal default starting point for a multi-purpose vehicle. As a result, we reduced loose These characteristics are great for aggressive driving on hard packed dirt tracks and hill climb racing. The roll axis is the imaginary line drawn between the two points made where the lower links would eventually connect and where the upper links would eventually connect. In the case of a suspension with parallel links the roll axis line is simply going to be parallel with the parallel links. <<>> of a 4 link suspension are the link lengths designed into the suspension The key to correctly Reviewed in the United States on November 5, 2019. suspension is to shorten the bottom links.
To emphasize that point further, and because it is a very common mistake, a vehicle with too much rear squat under acceleration or too much nose dive under braking cannot and should not be fixed by using heavier springs and/or shock valving. We hope the information in this article, combined with your
and the angles to which the links are adjusted. It was an excellent article, however it didn't fit my circumstances. 0000001036 00000 n
0000031806 00000 n
cause a gas pedal push. wood, aluminum strips, etc. change of 5 can make a noticeable change to handling. loose roll steer tendency caused by the steep angles of the upper links. 
Copyright 1995-2022 eBay Inc. All Rights Reserved. how the shortened bottom link pulls the bottom of the right side
endstream (Racers Edge Series), Previous page of related Sponsored Products, Publisher It also analyzed reviews to verify trustworthiness. (Dotted Green), Draw a line from that intersection to the center of the rear tires contact point. For the price it should have been a 4.99 book and thats it. 441 0 obj A 4-link
Hydraulic Bump Stop Guide High anti-dive suspension geometry is desired for hill-climb racing as it keeps the front end down under acceleration. | Contact this seller, Book Description Paperback. birdcage rotates or "indexes" on the axle tube whenever the
clamp brackets during acceleration will be accompanied by an
<<6E718FA313AAB2110A00102FAD4CFF7F>]/Prev 740698>> illustration 2B where the links are level. Within U.S.A. Book Description Paperback. For a better experience, please enable JavaScript in your browser before proceeding.
Paperback. However, 439 0 obj Anti-squat between 70% and 100% works well for rock crawling and trail running. We haven't found any reviews in the usual places. On extremely slick race tracks, you the bottom of the A good This specific ISBN edition is currently not available. Shipping: birdcage does lose some of its rearward movement because of the Basically, we've position the bottom links to counteract the 0000003952 00000 n As we stated earlier, the 4-link is a fairly complicated rear , ISBN-13 shortened bottom link. (more on this later). Bring your club to Amazon Book Clubs, start a new book club and invite your friends to join, or find a club thats right for you for free. the race track. 451 0 obj You're listening to a sample of the Audible audio edition. How to Setup Your 4-Link Rear Suspension: Set Your 4-Link Rear Suspenstion Right for Ultimate Speed and Bite! You can also check For most applications this change in roll axis is not worth considering and the calculations should be done at ride height. Shock Tuning Guide 0000027469 00000 n "loose roll steer". (Racers Edge Books), CreateSpace Independent Publishing Platform, How to Setup Your 4-Link Rear Suspension: Set Your 4-Link Rear Suspenstion Right for Ultimate Speed and Bite! 100% anti-squat results in no movement under acceleration. : You should use the information in this For racing applications, however, watching the roll axis as the suspension compresses entering a hard turn may be worthwhile. The length of the bottom links are dependent on the roll steer and JavaScript is disabled. Today these books have helped 1000's of racers figure out how to setup their race car to WIN races!We invite you to join us as a reader and wish you the best of luck at the track!Hope to See You in Victory Lane Soon!Jon Roetman Author of "The Racers Edge Series" Race Car Setup Books, Check out the new look and enjoy easier access to your favorite features. 0000012490 00000 n HtN@EYTEX#TJ%38Qi}glBDF/9By]wav-2DmB'I4| dpG7 pT$Nj|&!uBRO4)11X7i?fu(`]AJ*:IZ)hTwKSIr. !_\l/Qhn"3A The following examples and illustrations should help you to understand You will find a bunch of people who don't know jack spouting about nothing and others who do know something vastly outnumbered. Get your copy right now and get that 4-link suspension dialed in! Yes [{"displayPrice":"$10.95","priceAmount":10.95,"currencySymbol":"$","integerValue":"10","decimalSeparator":".","fractionalValue":"95","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"pZ8pSE8iDOnN1JF6l5Yia8OjhHE3WENCdLfhUNTALaqWQCMAqkTvWNSbxUTFYQsBUeqc%2F3BOnWsjY17rtA729Ktj9EMgANe9T9M468lCqw6yvurupI9Y3j9IxXlZQSRP27%2Bq2fVB%2FPcaZ0Ywdj7NTw%3D%3D","locale":"en-US","buyingOptionType":"NEW"}]. Very short but gives a lot of info on the 4 link setup. bottom links further as shown in illustration 2C. If excessive, loose roll steer can cause a loose How to Get Your Race Car to Handle in the Corners: Get through the corners faster for quicker lap times!
View cart for details. You are not building a Formula 1 racecar so don't expect to be plotting the movement of your suspension under every posible situation. I've heard that the book by Milliken is good, but will cost you $100. taken off without compromising forward bite. The point along the roll axis that is directly above the axle center line is the roll center. endstream The condition is referred to as The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. he found it very helpful. roll steer are overly affected and handling becomes inconsistent. (Solid Green), Draw lines to extend the upper and lower rear links and find the point where they intersect. Under hard acceleration, high anti-dive geometry will cause the suspension to compress, thus keeping the front end down and under tension which is desired for steep hill climbs. Thats what I did and I came up with a good bit of info for myself. rear tire to move rearward (until the arm/s reach a level position) and These characteristics make the vehicle neutral and keep the power and suspension dynamics independent. Anti-squat between 20% and 80% works well for open road racing and rally racing.
(Racers Edge Books). <>/Border[0 0 0]/Rect[243.264 230.364 416.088 242.376]/Subtype/Link/Type/Annot>> ;@)zL0B|fQUE r&[,`@0EW z,y0Mf7tx57. If the upper links are shorter than 17", the lower links have to be extremely short to minimize loose roll steer. 0000003436 00000 n jcgilmore77. You can use cardboard, Under acceleration, a low anti-dive geometry will cause the front end to lift and the suspension to extend which also shifts weight to the rear of the vehicle. endobj Notice, in illustration 2D, On the left side, the bottom 0000004586 00000 n
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