Cool Chassis - CCA-CHAS-LG | Cool Sprintcar Chassis Back A-frame

In the history of the Kings Royal, only three times have a team won both race events, the Night Before Kings Royal and the Kings Royal itself. And this weekend gone was the first time it’s been won with a car built outside of the United States, when Shane Stewart and the Larson Marks Racing Team won in an Australian-built Cool Chassis.Now there’s some science behind that win. A hint of it comes from a driver’s perspective.Andrew Scheuerle says, “Crew Chief’s like Pete Caporn and drivers such as Kerry Madsen, Brooke Tattnell and James McFadden all worked closely with John Cooley and put in the R&D over a number of years to build a chassis that works well in all conditions”.And does the result affect the driving experience?“From a driver’s perspective the Cool Chassis provides an incredible feel, a consistent feel, which in turn makes it easier to get setup to the track conditions. And that produces race wins.”Others have said similar, that the cars flex in just the right amount in just the right way.So how does it work?Ian Boettcher Race Parts’ Engineer, Brenton Knight, tips his hat to the make, and explains some of the science.“Because the cars utilise flex so much, the chassis essentially becomes a spring that’s part of the suspension. It plays a large part in the way each car handles. But consistency is the key, too. One problem with a lot of other sprint car brands is that you can get two chassis from the same manufacturer with the same options built a day apart by two different people…and they will handle differently because of the internal residual stresses from different manufacturing processes. Not with Cool Chassis.Cool Chassis’ own founder and developer, John Cooley, is cautious about the secrets behind his build, but he does agree.“It’s built to flex, so the setup window is wider. Absolutely. But because of the materials used and process of welding and jig fixtures that are used, they’re very consistent from car to car. The chassis that Shane raced and won in is the same chassis we’ll build today, is the same chassis we’ll build in 2 weeks’ time.”The tubes used in John’s work are integral. The steel and calibre are perfect and the materials are selected by John at the Mill. The tubes are consistent from batch to batch. It plays a big part how the car works and that’s where a driver gets the consistency and the flex.The tubes are laser cut and don’t have weld gaps. So there’s less residual stress after welding and greater consistency. The frames are held in the jig properly, solidly, so there’s less distortion.There’s a limited number of variations possible, and while this might sound a little inflexible at first, it’s worth it to you as a driver in the end: consistency and reliability.David Knight, General Manager of Ian Boettcher Race Parts, who are now the sole Australian distributors for Cool Chassis, says John Cooley’s dedication to strict quality control in materials, fabrication and design are the key.“John’s consistency translates straight to the chassis. It’s why you can buy a Kings Royal winning chassis for 7,100 plus freight. He’s as passionate about helping drivers race their best as we are.”

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