Bowling's Optimum Shift Calculator
Input Parameters Are the Following:
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Transmission Ratio One = 3.37 to 1
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Transmission Ratio Two = 1.99 to 1
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Transmission Ratio Three = 1.33 to 1
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Transmission Ratio Four = 1.00 to 1
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Horsepower = 150 at 3000 RPM
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Horsepower = 180 at 3500 RPM
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Horsepower = 220 at 4000 RPM
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Horsepower = 280 at 5000 RPM
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Horsepower = 290 at 5500 RPM
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Horsepower = 306 at 6000 RPM
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Horsepower = 290 at 6500 RPM
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Horsepower = 250 at 7000 RPM
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Horsepower = 210 at 7500 RPM
Computation Results:
Using the Criterion for Maintaining the Same Horsepower Before and After Shift:
Finding Best Shift Placement Points For Ratio 3.37 to 1.99:
Found optimum shift RPM at 7144, which achieves 237 horsepower and lowers the RPM To 4219 after shiftFinding Best Shift Placement Points For Ratio 1.99 to 1.33:
Found optimum shift RPM at 6864, which achieves 262 horsepower and lowers the RPM To 4588 after shiftFinding Best Shift Placement Points For Ratio 1.33 to 1.00:
Found optimum shift RPM at 6650, which achieves 280 horsepower and lowers the RPM To 5000 after shiftMaximumizing the Area Under the Horsepower Curve:
Finding Best Shift Placement Points For Ratio 3.37 to 1.99:
Found optimum shift RPM at 7494, which achieves maximum area under horsepower curve, and lowers the RPM to 4425 after shiftFinding Best Shift Placement Points For Ratio 1.99 to 1.33:
Found optimum shift RPM at 7496, which achieves maximum area under horsepower curve, and lowers the RPM to 5010 after shiftFinding Best Shift Placement Points For Ratio 1.33 to 1.00:
Found optimum shift RPM at 7268, which achieves maximum area under horsepower curve, and lowers the RPM to 5465 after shift
Bruce Bowling
bowling@cebaf.gov
Bowling Superior