Estimate quarter-mile time and trap speed from weight and horsepower (Hale), plu...

{ "method": "GET", "queryParams": { "horsepower": 300, "powerAt": "crank", "weightLb": 3200 }, "type": "http" }

{ "example": { "asOf": "2026-10-11T14:38:36.356Z", "crankHorsepower": 300, "degraded": false, "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.", "notChecked": [ "traction, launch technique, gearing, shift time, air density and altitude, tire type and road surface: real times scatter around these estimates by half a second or more", "that Hale's formulas fit rear-drive production cars best: all-wheel drive and electric cars launch harder than power alone predicts", "…2 more" ], "poundsPerHorsepower": 10.67, "powerToWeightHpPerTon": 187.5, "quarterMileSeconds": 12.82, "reasons": [ "Hale: ET = 5.825 x (weight / hp)^(1/3) seconds and trap speed = 234 x (hp / weight)^(1/3) mph, with weight in pounds and crank horsepower.", "0-60 lower bound = kinetic energy at 60 mph / wheel power: it ignores drag, shifts and traction." ], "source": "computed locally", "summary": "3200 lb with 300 hp (crank): about 12.82 s and 106 mph in the quarter mile. Power alone would allow 0-60 mph in no less than 2.7 s; real times are longer.", "trapSpeedMph": 106.3, "verdict": "ESTIMATED", "weightLb": 3200, "wheelHorsepower": 255, "zeroToSixtyPowerLimitedLowerBoundSeconds": 2.75 }, "type": "json" }