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SVTPerformance's Chain of Restaurants
Pics and Videos Buffet
Cam covers, AFCO, KB 2.2, 03 Cobra Installation Pictures - Some assembly req.!
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<blockquote data-quote="sonicmach1" data-source="post: 15596719" data-attributes="member: 74931"><p>The liner I got via a Facebook seller. You can look on Facebook Cobra groups as Michelle Shamer. On SVTP she is 03_cobra_chick.</p><p></p><p>Regarding the brake improvement due to a larger diameter, think of the reverse condition of a breaker bar. You apply the same force from your arm, but over a much larger moment arm than a short wrench so the higher torque you generate allows you to loosen high torque bolts.</p><p></p><p>Brake Torque (retarding) = Friction force from the caliper-pads x Moment arm (Approximately the Radius of the rotor) --> In actuality, the effective radius to the center of the pad area.</p><p></p><p>So lets say the caliper creates 1000 lb of force *11.6"/12/2 ft = <strong>483 lb-ft of retarding torque for stock 11.6" rotor</strong></p><p></p><p>AND</p><p></p><p>1000*13.5/12/2 = <strong>541 lb-ft of retarding torque for the 13" rotor</strong></p><p></p><p>12% better. But this kit is much lighter than stock which improves wheel control, vanes may be better at heat dissipation, etc. too.</p><p></p><p>________</p><p>Extra Credit</p><p>Then... you can sum up the wheel torques divided by the tire radius to calculate the force at the tire-ground interface that stops the car. Knowing road-tire friction you can estimate at what brake torque causes that tire to slip or lockup. Knowing the velocity and mass of the car and weight transfer, inertias, etc. you can calculate how long in time or distance the car takes to stop. Fun physics!</p></blockquote><p></p>
[QUOTE="sonicmach1, post: 15596719, member: 74931"] The liner I got via a Facebook seller. You can look on Facebook Cobra groups as Michelle Shamer. On SVTP she is 03_cobra_chick. Regarding the brake improvement due to a larger diameter, think of the reverse condition of a breaker bar. You apply the same force from your arm, but over a much larger moment arm than a short wrench so the higher torque you generate allows you to loosen high torque bolts. Brake Torque (retarding) = Friction force from the caliper-pads x Moment arm (Approximately the Radius of the rotor) --> In actuality, the effective radius to the center of the pad area. So lets say the caliper creates 1000 lb of force *11.6"/12/2 ft = [B]483 lb-ft of retarding torque for stock 11.6" rotor[/B] AND 1000*13.5/12/2 = [B]541 lb-ft of retarding torque for the 13" rotor[/B] 12% better. But this kit is much lighter than stock which improves wheel control, vanes may be better at heat dissipation, etc. too. ________ Extra Credit Then... you can sum up the wheel torques divided by the tire radius to calculate the force at the tire-ground interface that stops the car. Knowing road-tire friction you can estimate at what brake torque causes that tire to slip or lockup. Knowing the velocity and mass of the car and weight transfer, inertias, etc. you can calculate how long in time or distance the car takes to stop. Fun physics! [/QUOTE]
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SVTPerformance's Chain of Restaurants
Pics and Videos Buffet
Cam covers, AFCO, KB 2.2, 03 Cobra Installation Pictures - Some assembly req.!
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