The Bike Leverage Ratio Calculator helps riders determine the efficiency of their bike’s suspension system. The leverage ratio is essential for tuning suspension performance, ensuring optimal comfort and control.
Formula
The leverage ratio (LR) is calculated using the following formula:
LR = RWT / SS
Where:
- LR = Leverage Ratio
- RWT = Rear Wheel Travel (mm)
- SS = Shock Stroke (mm)
How to Use
- Enter the rear wheel travel in millimeters.
- Input the shock stroke in millimeters.
- Click “Calculate” to get the leverage ratio.
Example
If a bike has a rear wheel travel of 150 mm and a shock stroke of 50 mm, then:
LR = 150 / 50
LR = 3.00
FAQs
1. What is a bike leverage ratio?
It measures how much the rear wheel moves relative to the shock stroke, affecting suspension performance.
2. Why is the leverage ratio important?
It helps determine how progressive or linear a bike’s suspension feels, impacting ride quality and shock tuning.
3. What is an ideal leverage ratio?
A typical range is between 2.5 and 3.5, but this depends on the bike type and riding style.
4. How does leverage ratio affect suspension performance?
A higher ratio means more shock movement per wheel movement, making the suspension more sensitive to small bumps.
5. Can I use this calculator for any bike?
Yes, it works for mountain bikes, downhill bikes, and other full-suspension bikes.
6. How do I measure rear wheel travel?
Check the bike manufacturer’s specifications or measure the vertical movement of the rear axle.
7. What is shock stroke?
It’s the total movement range of the shock absorber, measured in millimeters.
8. How does leverage ratio affect shock choice?
Higher leverage ratios require shocks with higher damping and spring rates for better control.
9. Does a higher leverage ratio mean better performance?
Not necessarily. It depends on suspension design and rider preference.
10. Can I change my bike’s leverage ratio?
No, it is determined by the bike’s frame design and suspension linkage.
11. How does leverage ratio impact pedaling efficiency?
Lower ratios generally improve pedaling efficiency, while higher ratios enhance bump absorption.
12. What happens if my leverage ratio is too high?
It may lead to excessive shock movement, reduced efficiency, and increased wear on suspension components.
13. Do hardtail bikes have a leverage ratio?
No, since they lack rear suspension.
14. Is a lower leverage ratio better for aggressive riding?
Yes, lower ratios provide better shock support for aggressive terrain and big impacts.
15. How does leverage ratio affect shock tuning?
A higher ratio requires more damping and spring force to control movement effectively.
16. Can I compare leverage ratios between different bikes?
Yes, but consider other factors like suspension kinematics and frame geometry.
17. Does bike weight affect leverage ratio?
No, but it influences how the suspension performs under load.
18. Can I adjust my shock stroke to change the leverage ratio?
No, the leverage ratio is fixed based on the bike’s frame design.
19. How does leverage ratio affect bottom-out resistance?
Lower leverage ratios generally provide better bottom-out resistance, reducing harsh impacts.
20. Is leverage ratio the same as suspension progression?
No, but they are related. Progression refers to how leverage changes throughout the suspension travel.
Conclusion
The Bike Leverage Ratio Calculator is a useful tool for understanding and optimizing bike suspension performance. By knowing the leverage ratio, riders can make informed decisions about shock tuning, suspension setup, and overall bike handling.