Transmission gear ratio estimate
From Crankshaft Coalition Wiki
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| − | + | ==Estimating transmission ratios== | |
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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: | 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. | |
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| + | :Note the speedometer reading. | ||
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| + | *Then put it in whatever transmission gear that you want to know the ratio of, and drive at the exact same speed. | ||
| − | Note the | + | :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. | ||
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[[Category:Transmission]] | [[Category:Transmission]] | ||
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