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Moment Of Inertia - Reduce MOI & Gain Horsepower

An Understanding Of This Concept Can Bring Big Power Gains To The Rear Wheels Without Touching The Engine
By David Vizard
Reducing MOI Stock Cars
Reduced MOI can provide the extra power needed to pull away from the competition. The No. 10 car (above) is driven by Andy Mercer, teammate of Nick Losito. Penny Holder

Reducing MOI Quarter Master Mini Clutch
Here is Quarter Master's new circle track mini-clutch. Although it is completely out of the power-generating loop, it is actually worth rear wheel horsepower.

Reducing MOI Flywheel
Flywheel Moments of Inertia - Although both these flywheels weigh the same...

Reducing MOI Flywheel
...this one will spin up more easily because the mass is located nearer the center, giving it a lower MOI. (Fig. 1)

Reducing MOI Crankshaft
Here is a low-MOI, Nextel Cup-style Chevy crank from Scat. It is typically 9-11 pounds lighter than a stock crank with an MOI that's about 20 percent less.
Reducing MOI Flywheel
At 23.75 pounds, this stock small-block Ford flywheel is a behemoth...
Reducing MOI Flywheel
...compared to the 10.8 pounds of this steel-faced aluminum flywheel from Fidanza

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Ford Shelby Consider the Ford Shelby for your next new car, and browse reviews featuring information on test drives, comparisons, options and features. The Shelby comes with a V8 standard engine and goes for a suggested retail price of $51,325.00. It is available in the following bodystyles: Coupes, Convertibles. Other similar vehicles are the Chevrolet Camaro and the Ford Edge.

Related Photos

Reducing MOI Dyno Graph Reducing MOI Racepak
Reducing MOI Dyno Graph Reducing MOI Racepak

 

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