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Gear Ratios Basics
Understand gear ratios
Gear ratios define how input rotations convert to output speed/torque; higher ratios increase torque, lower ratios increase speed.
- gear ratio
- torque
- speed
- teeth
- mechanical advantage
Calculate
Ratio = driven teeth / driver teeth; or input/output speeds.
Choose
Pick ratios for needed torque or speed in bikes/machines.
Consider Efficiency
Account for losses; lubricate and align for smooth power.