Compression stack analysis
Study low-speed support, mid-speed control and high-speed blow-off direction.
Engineering software
Shim Stack Calculator for Motorcycle Suspension
Predict suspension damping performance, compare shim stacks, and tune motorcycle suspension using engineering-based calculations.
What is Shim Calculator?
A technical tool for suspension valving decisions
Shim Calculator helps tuners compare stack changes before committing to a build. It turns shim dimensions, stack order and configuration into clearer damping direction so workshop changes become more structured.
Who is it for?
- Suspension tuners comparing valving options
- Engineers modelling damping behavior
- Workshop owners building repeatable setups
- Race teams developing faster test plans
- Advanced riders learning shim stack behavior
How it works
Compare changes against damping direction
Enter a stack, define the valve context, compare variations and review the predicted force versus velocity behavior.
Rebound stack analysis
Compare rebound control strategies before changing hardware.
Damping prediction
Use engineering calculations to see likely direction before a test session.
Force versus velocity curves
Visualise where a change adds support, frees movement or changes progression.
Engineering recommendations
Use structured prompts to decide what to test next.
Stack comparison
Compare baseline, softer, stiffer and crossover options side by side.
Diagrams
See how stack changes move the curve
The calculator is designed to connect physical shim stack changes to a damping curve riders and tuners can discuss.
Start calculating