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- To calculate the rear end gear ratio, you can use different methods depending on the information you have1234:
- If you know the RPM, tire diameter, MPH, and transmission ratio, use the formula: RPM x tire diameter / MPH x transmission ratio x 3361.
- If you know the number of teeth of the ring and pinion gears, divide the big number by the little number2.
- If you know the diameter of the driving and driven gears, divide the driving gear by the driven gear3.
- If you know the original tire diameter, new tire diameter, and original gear ratio, use the formula: (Original Tire Dia / New Tire Dia) x Gear Ratio4.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.To determine the gear ratio use the following formula: RPM (at maximum engine power) x tire diameter / MPH x transmission ratio (this should be 1, unless in overdrive at the finish line) x 336 (336 is a constant value needed and represents inches per mile / Pi x minutes in an hour)www.jegs.com/tech-articles/gear-ratio-explained-ch…To find the gear ratio, divide the big number by the little number. In the example to the left, 37 ÷ 12 = 3.083333. These are 3.08 gears.www.moderndriveline.com/how-to-determine-your-r…To calculate the gear ratio:
- Find the 1st (driving) gear's number of teeth or diameter.
- Find the 2nd (driven) gear's number of teeth or diameter.
www.omnicalculator.com/physics/gear-ratioThe formula looks like this:
- ODR = (Original Tire Dia / New Tire Dia.) Gear Ratio
- ODR = (26 / 28) 4.10
- ODR = 0.928 x 4.10 = 3.80:1
www.motortrend.com/how-to/how-to-choose-the-rig… - People also ask
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