b'XR5 TRACK-WARRIOROptional - Tailored Bump Stop Package: Advanced Bump Stop Set-up Tailored for You by Ron Sutton OptionalCrates Consistent, Confident Braking & Corner Entry Drive it DeepNo Worries. Easily Tunable in Under a Minute Specific Progressive Rate Bump Stops for Soft Landing Shim Assortment & Ron Sutton Track Tuning Guide Included Tech Tip 26A: Bump Stops are often clouded in mystery. In reality, there are a simple tuning tool for corner entry under braking. If you have the right setup, they gently stop the front enddive at your target travel amount. Tuning?If the car is loose on entry under braking & turn in,add more shims. If the car is tight or pushy under braking & turn in, remove shims. Yes, it isthat easy if you have the right bump stop rate curve. Ron will share more tuning tips with you. Tech Tip 14: Achieving the optimum (fullest) contactpatch of both front tires, dynamically in full dive, roll,steering & braking in the corner, is an important key to afast race car. This is not easy, with a lot of factors affecting the final contact patch. Wheel load, tire roll, chassis roll,camber setting & gain, caster setting & gain, spindle KPI,steering angle, etc., all affect the final contact patch.The combination of all these factors, minus wheel load & tire roll, is called dynamic camber. Over four decadesRon has learned the dynamic camber needed to achieveoptimum contact patches on both front tires on vehicleswith a range of weights, varied tire designs, differentsidewall heights & wheel-width-to-tire-width ratios.Some basic things to know are:Camber helps the outside tire & hurts the inside tireKPI helps the inside tire & hurts the outside tireCaster helps both the inside & outside tireWhen are 5 or 8 KPI spindles better? It has to do with the travel & roll angle of the suspension strategy. When Ron works out a suspension & steering geometry setup, he utilizes a 3D suspension software that allows him to look at the tire contact patches when the car is in dynamic dive & roll. Like the illustration to the right.Then he works with both static & dynamic camber & caster, as well as the spindle KPI to achieve optimum contact patches for both front tires. Utilizing 5 spindles helps Ultra High Travel/Low-Roll setups achieve optimum tire contact patch. The 8 spindles work better with Moderate Travel/Moderate-Roll setups to achieve optimum tire contact patch.177'