This force is what we need to calculate.Īccording to Honda, the curb weight of a fully optioned 2021 FK8 is 3121 lbs with a weight distribution of 62.1 : 37.9. Due to that moment, there is a reaction force at the strut bar due to the frictional moment. This frictional force creates a friction moment at the control arm, causing it to pivot clockwise or counter clockwise (dependent on cornering direction). This is the frictional force that opposes the sliding friction, as per Newton’s Third Law. Dissecting a free body diagram, we can see, during cornering, there is a frictional force acting along the tire, towards the center of the vehicle. We are considering an FK8 cornering at 1G, therefore, there is 100% weight transfer to the front wheels. In order to simplify the analysis, we had to make a few assumptions. This minimizes torque steer, but doesn’t affect suspension travel geometry. Essentially, Honda’s dual-axis design adds a damper fork to reduce the center offset. The design of the FK8 front suspension is similar to that of a MacPherson Strut, with the exception of having a dual-axis geometry. In order to develop the most effective design, in terms of weight and structural rigidity, we utilized numerous designs and stress analysis tests to confirm our hand calculations and determine how much stress a strut bar would be experiencing in a real-world scenario. Our team worked to ensure fitment on both the 2017-2021 Honda Civic Type-R FK8, 2016-2021 AND the 2022+ Honda Civic 1.5L Turbo, as well as maintain a competitive price point. The goal of Throwback Strut Bar project was to design a strut bar that was as light and structurally rigid as possible while reminiscent of the OEM strut bar offered on the DC2 Acura Integra Type R. As a company founded by enthusiasts with grassroots racing history dating back into the late 90’s our team understands the importance of keeping Honda’s racing heritage alive. Over the past few months our engineers have been working behind the scenes to bring a cost-effective, functioning and aesthetically pleasing strut tower brace.
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