Many times hair-line fractures and cracks cannot be seen without the aid of a florescent penetrant inspection. So, with the Detroit Locker rear end, stagger should match the radius of the turn where the car is starting to accelerate and the rear end is locked. If and when the length exceeds the outside diameter ratio then the spring will tend to bow, similar to the shape of a banana. Note:To get the desired front end height (ride height), it may be necessary to modify the springs. There are two different way to run stacked springs. Setup Tips for Asphalt Oval Racing This develops more crossweight as the car squats on acceleration. The following spring/shock combinations are recommendations only. %%EOF I have talked to racers who run on tracks that require 1.75 to 2.00 inches of stagger. If the same stiffly shocked corner is in rebound, less of the overall load will be retained by that corner, and its diagonal corner as well, during the rebound cycle only. The longer lever arm created by the adjustment scenario in the prior paragraph compresses the RF spring more than it would have in our baseline set up. Decrease the Pre-Load on the Stabilizer Bar. . right rear leaf spring with matching arches. Remove the spring from the car and place it on its side on the floor or a flat surface. Unbalanced setups exhibit easily observed characteristics, such as unusually high degree of wear and temperature on one tire versus the other tires. Every time that the material is heated, it removes carbon from the material. The amount of difference you need is directly influenced by the installed motion ratio of the spring and the spring rate. When the shock travels, the divider between the shocks moves up the shock body. Landrum designed their front drag racing coil springs to store energy for instant, maximum weight transfer for launching. Maximum U-bolt torque for 1/2 diameter, plated U-bolts are 45 lbs. So in some cases, using chrome vanadium for higher rated springs is a better choose than chrome silicon. Furthermore, the crew made unnecessary changes, wasted valuable time, resulting in wear and tear on the engine, tires and other components. The open-end type springs are required when spring security of location is desired. The moment center must be located correctly for your type of racing and the cambers must be set, again toward your setup style and track conditions. With the car set up correctly, it is just a matter of experience and a little racing luck that brings that first win. Let say that a chassis engineered wanted to increase the right front spring rate by only 200#. Rear Steer Design - Chassis Setup For Improved Cornering - Circle Track Reduce the crossweight in a tight car and increase the crossweight percentage in a loose car. by 72firechicken Wed Jun 22, 2011 3:46 pm, Post This induces less rear steer when the car squats on exit. By Bob Bolles, Circle Track Magazine . So, there is a limit to how much you can get away with and still have a decent corner entry. No one including us can guarantee every spring to rate out exactly. Running dampening shocks not only will tighten the car on entry, but will also prolong the life of the spring. First, we needed to look at the previous setup to see what went wrong. It's been three years since we discussed the subject of handling fixes. These do not install with rubber isolators either. We do not want to try to solve turn entry problems with the brake bias, we only need to make sure the car stays neutral in handling when the brakes are applied. 4. That would be only on the r/r,you could toe the l/r out and the r/r in if the car needed it.If your housing has 1/16 toe out on the r/r you might need to shorten the wheelbase 3/4 to 1'' to get some toe in in the r/r.With r/r toe in the thrust angle of the tire is pointing toward the center of the car.When you pick up the throttle the r/r drives toward the infield and keeps the car tight letting you apply more power.

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