- #1
Calculating Gear Ratios - Need Assistance?
- Thread starter willib
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SUMMARY
The discussion focuses on calculating gear ratios, specifically a final gear drive ratio of 94.62:1. The calculations involve multiple gears with specific ratios: Gear 1 to 2 (6/43), Gear 2 to 3 (1/1), Gear 3 to 4 (12/40), Gear 4 to 5 (1/1), Gear 5 to 6 (12/39), Gear 6 to 7 (1/1), and Gear 7 to 8 (12/39). The final ratio is confirmed to be 94.62:1, demonstrating the importance of understanding gear relationships and their impact on torque and speed.
PREREQUISITES- Understanding of gear mechanics and ratios
- Familiarity with torque calculations
- Knowledge of gear teeth and diameters
- Basic principles of mechanical engineering
- Research gear ratio calculations in mechanical systems
- Learn about torque and its relationship with gear ratios
- Explore the impact of gear teeth count on performance
- Study the principles of gear trains and their applications
Mechanical engineers, automotive technicians, and hobbyists interested in understanding and calculating gear ratios for various applications.
- #2
Cyrus
- 3,237
- 17
What are these numbers, diameters, radius, number of teeth?
- #3
willib
- 227
- 0
they are number of teeth.
- #4
Cyrus
- 3,237
- 17
Do you want to know what's the end torque? Because without radii, I can't tell you.
- #5
FredGarvin
Science Advisor
- 5,093
- 10
Follow the train through logically. Starting at the motor:
Gear 1 to 2: The speed will step down by a factor of 6/43.
Gear 2 to 3: The speed should stay the same since they are on the same shaft, so it's ratio could be 1/1
Gear 3 to 4: The speed is reduced again by a factor of 12/40.
Gear 4 to 5: Again, they are on the same shaft so the ratio should be 1/1.
Gear 5 to 6: There is another reduction in speed by a factor of 12/39.
Gear 6 to 7: Same shaft, no change, 1/1.
Gear 7 to 8: A final reduction in speed of 12/39.
So where does that leave you?
Gear 1 to 2: The speed will step down by a factor of 6/43.
Gear 2 to 3: The speed should stay the same since they are on the same shaft, so it's ratio could be 1/1
Gear 3 to 4: The speed is reduced again by a factor of 12/40.
Gear 4 to 5: Again, they are on the same shaft so the ratio should be 1/1.
Gear 5 to 6: There is another reduction in speed by a factor of 12/39.
Gear 6 to 7: Same shaft, no change, 1/1.
Gear 7 to 8: A final reduction in speed of 12/39.
So where does that leave you?
- #6
willib
- 227
- 0
94.62 : 1 thanks fred ..
how did you know it was a motor
how did you know it was a motor
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