Motorcycle Gear Ratio and Tire Size Calculator
Here's a comprehensive table summarizing the key information about motorcycle gear ratios and tire sizes:
| Aspect | Description | Effect |
|---|---|---|
| Gear Ratio | The relationship between front and rear sprocket teeth | Determines acceleration and top speed |
| Front Sprocket | Smaller sprocket | Increases acceleration, decreases top speed |
| Rear Sprocket | Larger sprocket | Increases acceleration, decreases top speed |
| Lowering Gear Ratio | Increasing difference in tooth count between front and rear sprockets | Improves acceleration, reduces top speed |
| Raising Gear Ratio | Decreasing difference in tooth count between front and rear sprockets | Increases top speed, reduces acceleration |
| Front Sprocket Change | More significant impact than rear sprocket change | 1 tooth change ≈ 3 teeth on rear sprocket |
| Tire Size | Larger diameter | Increases effective gear ratio, higher top speed |
| Tire Size | Smaller diameter | Decreases effective gear ratio, lower top speed |
| Primary Drive | Ratio between crankshaft and gearbox input | Usually fixed, affects overall gearing |
| Gearbox | Internal gear ratios | Can be changed for specific needs |
| Final Drive | Ratio between transmission output and rear wheel | Easily changeable, affects performance |
| Overall Ratio | Combination of primary, gearbox, and final drive ratios | Determines final performance characteristics |
This table provides a quick reference for understanding how changes in sprocket sizes, gear ratios, and tire sizes affect a motorcycle's performance. It's important to note that these changes can impact not only speed and acceleration but also fuel efficiency and engine wear.