Transmission gear ratio estimate

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-==Estimating transmission ratios==
-A way you can get a ballpark figure for what the '''transmission ratio''' is - if the car is drivable, and has an accurate tachometer and speedometer:
-*Drive the car at 1000 RPM (you can use a different RPM and convert it easily) in whatever transmission gear is 1:1.
-:Note the speedometer reading.
-*Then put it in whatever transmission gear that you want to know the ratio of, and drive at the exact same speed.
-:Note the tach reading.
-*you move the decimal point three places to the left, that's your transmission ratio.
-Example: If the tach says 3200 RPM, your transmission ratio is 3.2:1.
-==Resources==
-Also see '''[[Gear ratio check]]''' for estimating '''rear''' gear ratios.
-[[Category:Transmission]]

Latest revision as of 06:35, 17 November 2024