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Dual Spring Rate Formula:
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The dual spring rate calculation determines the effective spring rate when two springs are used in parallel in mountain bike suspension systems. This is important for optimizing suspension performance and tuning the ride characteristics of your MTB.
The calculator uses the parallel spring rate formula:
Where:
Explanation: When two springs work in parallel, their combined rate is calculated using this formula, which accounts for how the springs share the load.
Details: Proper spring rate calculation is crucial for achieving optimal suspension performance, maintaining proper sag settings, and ensuring balanced handling characteristics on your mountain bike.
Tips: Enter the spring rates of both springs in N/mm. Both values must be positive numbers greater than zero for accurate calculation.
Q1: Why calculate dual spring rates for MTB?
A: Some suspension designs use two springs to achieve specific progressive rates or to fine-tune the suspension characteristics for different riding conditions.
Q2: Does this formula work for all spring configurations?
A: This formula is specifically for springs working in parallel. Series configurations use a different calculation method.
Q3: What are typical spring rate values for MTB?
A: Spring rates vary widely based on rider weight, bike design, and riding style, typically ranging from 0.3-0.8 N/mm for air springs and 400-600 lbs/in for coil springs.
Q4: How does dual spring setup affect suspension performance?
A: Dual springs can provide a more progressive rate curve, offering better small bump sensitivity while preventing bottoming out on big impacts.
Q5: Should I convert lbs/in to N/mm for this calculator?
A: Yes, for accurate results. 1 lbs/in ≈ 0.175 N/mm. Convert your spring rates before entering them into the calculator.