I made a thing

"traderQAMobileTestAutomationMobileBoostOn" (el-peasant) 08/19/2016 at 16:22 • Filed to: None

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Here’s an idiot formula for acceleration in a gear. This is probably stupid as it leaves out aero and tires, and weighting but a good rule of thumb for comparison. Lower = Slower.

(Final drive / Gear ratio (I like to use 1st))

————————

(Weight / Wheel hp)

For instance: 2014 Corvette C7 coupe M7

Final drive x 1st ratio = 3.42 x 2.66 = 9.0972

Weight: 3298 lbs

Wheel hp: Assuming 12.5% drivetrain loss = 398.125 hp

9.0972 / (3298 / 398.125) = 1.09818761370528

2013 Dodge Challenger R/T Auto = 0.87848214649681

HammerheadFistpunch > traderQAMobileTestAutomationMobileBoostOn 08/19/2016 at 16:37

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Its...not quite so simple as that. What it boils down to is that this is the same in terms of helpfulness as power to weight. To make this work you need to factor in the wheel/tire radius for the lever arm (its the FINAL final drive ratio, after all) and then have that information graphed out with the curve since peak hp doesn’t necessarily make for a quicker car, what you need is a high average power.