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SVT Shelby GT500
Light vs heavy flywheel
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<blockquote data-quote="F8L SN8K" data-source="post: 10874197" data-attributes="member: 50367"><p>"Light makes right" </p><p></p><p>Newtons 3rd law of motion states that any object in uniformed motion stays in that state of motion unless an external force is applied. </p><p> </p><p>The factory uses a heavy flywheel to provide better NVH and easier drivability when starting from a stop. A heavier flywheel will require less RPM to provide the same kinetic energy of a lighter flywheel. That's pretty much where the advantages stop. </p><p></p><p>Now a lighter flywheel(based on the assumption of the lighter flywheel has a corresponding lower moment of inertia) will accelerate faster. Rotational mass reduction is so very important to the drag racers and road racers. Throttle response is much improved. It takes less HP to accelerate the lighter/M.O.I. Flywheel. </p><p></p><p>The common misconception is that a heavier flywheel is better for drag racing is a falsehood. The theory is that the heavier flywheel will "hit" harder then a lighter one. If the RPM is remains the same that IS true. HOWEVER, it takes more energy to accelerate the higher mass/M.O.I. Flywheel. And the "advantage" of the heavier flywheel is null and void when you just rev the lighter flywheel just 3-600 rpm higher on launch(and if power shifting the engine will accelerate quicker in-between gear changes causing the RPM to be higher on gear change "rpm flares". It doesnt make a whole lot of sense to hurt the other 99% of the run for a small part of the run that can actually be overcome by just revving the engine a little higher. </p><p></p><p>Racers spend a lot of time and money to cut down on weight. Especially rotational mass where rewards are 4-fold. Many have tested and have found that the lighter flywheels to be worth a lot of E.T. and MPH.</p></blockquote><p></p>
[QUOTE="F8L SN8K, post: 10874197, member: 50367"] "Light makes right" Newtons 3rd law of motion states that any object in uniformed motion stays in that state of motion unless an external force is applied. The factory uses a heavy flywheel to provide better NVH and easier drivability when starting from a stop. A heavier flywheel will require less RPM to provide the same kinetic energy of a lighter flywheel. That's pretty much where the advantages stop. Now a lighter flywheel(based on the assumption of the lighter flywheel has a corresponding lower moment of inertia) will accelerate faster. Rotational mass reduction is so very important to the drag racers and road racers. Throttle response is much improved. It takes less HP to accelerate the lighter/M.O.I. Flywheel. The common misconception is that a heavier flywheel is better for drag racing is a falsehood. The theory is that the heavier flywheel will "hit" harder then a lighter one. If the RPM is remains the same that IS true. HOWEVER, it takes more energy to accelerate the higher mass/M.O.I. Flywheel. And the "advantage" of the heavier flywheel is null and void when you just rev the lighter flywheel just 3-600 rpm higher on launch(and if power shifting the engine will accelerate quicker in-between gear changes causing the RPM to be higher on gear change "rpm flares". It doesnt make a whole lot of sense to hurt the other 99% of the run for a small part of the run that can actually be overcome by just revving the engine a little higher. Racers spend a lot of time and money to cut down on weight. Especially rotational mass where rewards are 4-fold. Many have tested and have found that the lighter flywheels to be worth a lot of E.T. and MPH. [/QUOTE]
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Light vs heavy flywheel
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