Dirt modified rear suspension Fifth coil The secret to this unit is to have a stiff rate for instant traction but create enough travel (3” to 3-1/2”in the slick) to make the torque arm pick up the chassis and plant the tires in the track. The trailing arm angles affect the rear steer and bite and the pull bar, or lift arm, can redistribute load upon acceleration and deceleration. Rear shock dampening control is needed after making any extreme bar angle changes to that style of suspension. Bob Harris' RaceTech Dirt Chassis Schools are designed to help anyone who want to win more races! Our Iowa Modified class is perfect for anyone who is involved with any type of Modified chassis using a 4-Link or 4-Link Rear Suspension. Youth Racing Safety Equipment and Gear; Dirt Late Model and Crate Late Model. Dirt Rear Steer. May 7, 2014 · I run a metric chassis on dirt ovals. Although the rest of the car can be constructed from scratch from steel tubing, the front clip, Jul 1, 2009 · "Rear steer is important in any design of dirt car. Horsepower and muscle used to rule dirt racing. Click Here For More Info. The right front is fine tuned with the rebound to make the front suspension turn. Rising the rear up is what dirt cars with four-link rear suspensions are designed to do under acceleration. Apr 19, 2009 · A lot of the locally constructed cars run a sprint car style rear with and open tube live axle sprint rear and a jacobs ladder while we also have the american style set up with the closed tube rear and low link suspension setup i. Not anymore. A car with less anti-squat will compress its rear suspension under acceleration. Follow us @Facebook: Race Tech InfoInstagram: RacetechinfoTwitter: @Race tuning with rear shocks on 3-link suspension for 3-link: left rear shock in front when more drive is desired and right rear shock behind when car needs to be tighter on entry. The front shocks are both built as rebound adjustable shocks. J. the rear torsion arms on the birdcage rollers, and the use of a panhard bar. e. The left-rear suspension is designed so that when that corner Jul 1, 2011 · Many racers even prefer to utilize the leaf spring rear suspension design in their fabricated Late Model stock and Modified race cars. As organizers seek to maintain parity in race fields while keeping running costs at bay through targeted mandates, it’s an aspect of tuning that’s still allowed a substantial amount of creative freedom Brakes Chassis Dirt Late Model Dirt Modified Driver Technique Engine Fire Suit Fire Suppression How-to Install Materials New Product PRI 2018 PRI 2019 Project Late Model Racer Guide to Boone 2023 RACING 101 Rear-End Safety Seats Shocks Springs Stock Cars Suspension Tech Testing Tires Sep 14, 2014 · This shows how a dirt Modified suspension works on the track. In 5 Myths About Racing Shocks: Busted, we highlighted that horsepower is important, but an ill-handling car will not efficiently use it by not allowing the power to put down or stay stable at high speeds. left rear shock increase compression on slick race tracks *90/10 shock should be used with all pullbar applications recommended tire air pressure lf: 10 lbs rf: 12 lbs Dirt Modified Improving traction and side bite through ongoing shock valving development and offering new left rear shock and spring combinations to create forward bite. Each car needs to be evaluated for where it is to be raced and then set correctly. We are allowed to run a nine inch rear-end, with the top mounting points no higher than 7 3/4" from the "centerline" of the axle. May 20, 2012 · Ever wonder how a pullbar works? Check out this view of all the rear suspension on a dirt modified. Understanding your three link suspension can give you adjustment tools to help you roll through the center of the turn or help to hook you up on exit. During chassis roll, indexing loads the right rear tire and unloads the left rear tire and wedge is reduced (40 lbs to 80 lbs is typical!). There is a science and methodology to the use of leaf springs (Try to bounce the rear of a car with a 4-link rear suspension). builds the swing arm-type of rear suspension that typically produces less rear steer than the four-bar cars. Jun 1, 2021 · In World of Outlaws and the Lucas Oil Late Model Dirt Series racing, suspension setups have taken on increasing importance in recent years. The car is a 2008 Pierce Dirt Modified Clamp Car. This was filmed at 250 Speedway in Cadiz OhioF Sep 1, 2008 · Our Dirt Late Model project car has been undergoing a lot of change over the past month. Too much left rear compression kills forward bite. Indexing can improve driveability by keeping the race car flat in the corners. In general your static rear setting should be dead square. Dirt modified setup basics for interested fans and new racers. This basic tech tip guide gives basic knowledge on left rear tuning, thin This shock is also critical in making sure the left rear corner does not fall and let the chassis lose the rear steer. " C. Decisions concerning spring changes, tire selection and grooving, rear suspension adjustment, weight distribution, and even the front Covers front suspension system, geometry, rear suspension systems (3-link, swingarm, coil/monoleaf, 4-link), brake system, springs/shocks, ballast and weight. Whether you race a Sport Mod, MidWest Mod, B-Mod or any division running a 2/3 Link rear suspension with limitations. Also includes chassis setups for dirt and paved cars as well as problem solving for handling and adjustments for track conditions. The dirt car rear geometry layouts are varied and usually highly adjustable for both late models and modifieds. With the large amount of information available in today's dirt racing world, we help break that down into usable knowledge that is applicable to you & your race team. This video series is done as a thank you to Mike Kraft and KC CheeseWorks for all the videos Modified Set-up Manual Technical Information Available at 515-432-6972: 8:30am-4:30pm Monday thru Thursday 8:30am-3:30pm Friday At Harris Auto Racing we manufacture our own chassis designs for the Modified divisions. Follow us @Facebook: Race Tech InfoInstagram: Racetec This video will give insight to common dirt late model left rear 4-link suspension. I am finding limited information, and contradicting information on rear moment center location for the stock mounting location points. 5-19-12 SFCR Suspension cam Apr 4, 2022 · Setting Up Your Racing Suspension for Dirt: What NOT to Do. Jan 31, 2025 · Not enough compression allows the left rear corner to set down and make the chassis tight when rear steer is lost. Rear steer rigs turn quickly and the term “push” just would never apply. This video shows the under car camera angle of a 2-link Sport Mod's rear suspension. Lol. Jul 1, 2011 · In this chassis tech article CIRCLE TRACK contributor Bob Bolles takes a detailed look at the function of the parallel four-link rear suspension common to Dirt Late Model, Dirt Modified Nov 16, 2010 · One of the key features of what we'll call the IMCA-style Dirt Modified is the stock front clip. Brakes Chassis Dirt Late Model Dirt Modified Driver Technique Engine Fire Suit Fire Suppression How-to Install Materials New Product PRI 2018 PRI 2019 Project Late Model Racer Guide to Boone 2023 RACING 101 Rear-End Safety Seats Shocks Springs Stock Cars Suspension Tech Testing Tires Aug 15, 2018 · • Increase left rear bite TIGHTEN CAR ON CORNER EXIT • Increase left rear bite • Move 5th coil or torque link left • Stiffen left rear spring • Soften right rear spring • Stiffen right front spring (may affect ability to steer in middle and entry). Feb 5, 2020 · In this video you can see the exact things the rear suspension is doing on a 4-link dirt track Modified. Mar 25, 2007 · Now you could also make a way to change the forward and/or rear lower bar mounting position and in essence end up with a factory but modified adjustable 4 link. Modified Suspension Parts; Modified Driveline; Modified Bodies; Street Stock and Monte Carlo; Demo Derby Masters; Asphalt Late Model All mounts for modified or sportmod; 3 link Sportmod rear suspension using URC designed and fabricate brackets; 4 link rear suspension using Wehrs Machine bearing birdcages; Bolt in chassis side trailing arm mounts; 14″, 15″, or 16″ lower link lengths and 16″ or 17″ upper link lengths; Adjustable rear shock and spring mounts (A-Mod Only) Sep 1, 2003 · In dirt racing, it may be advantageous to incorporate a large amount of rear steer under certain conditions. An accelerating car with more than 100% anti-squat will actually pitch the rear up due to the suspension’s jacking forces. Late Model Suspension; Late Model Driveline; Late Model Bodies and Other Parts; Modified, Street Stock, and Monte Carlo. LOOSEN CAR ON CORNER EXIT • Decrease left rear bite • Soften left rear spring Mar 1, 2004 · Dirt Racing Suspension - Dirt Car Setup Tips, Part One. We installed most of the body, all of the suspension parts, the rearend, and the motor and transmission. epnuhs wdq ojdfy vbzg lwaapwc entdv bxxn vclscy rmmx aqmhqf drtv buoa cjz cmrogk nrk