Four-bar Mechanism Design
Analyze crank-rocker, double-crank, and double-rocker mechanisms, draw a target path, and fit four-bar dimensions automatically.
Analysis · Trajectory FittingOpen Four-bar DesignPLANAR MECHANISM DESIGN, IN THE BROWSER
From motion goals,
to mechanism designs.
An open-source, browser-based platform for planar mechanism design and automated synthesis. Analyze standard mechanisms quickly, or build your own from joints and links.
LINKAGE / 4-LEG WALKθ 0.0°
PLANE XYLEGS 4FOUR-BEAT WAVE WAVEFOOT PATH J8SOLVER READY
DESIGN WORKBENCHES
Choose how you want to design
Solve standard mechanisms quickly or explore freely.
Six-bar Leg Synthesis
Draw foot-end trajectories for walking and running, then generate six-bar designs balancing accuracy and transmission quality.
Mechanical legs · Comprehensive solutionsOpen Six-bar Leg DesignVariable-geometry Walking Leg
Adapt one Klann or Jansen mechanism to cruise, high-speed, and obstacle trajectories using a movable ground pivot or lockable telescopic link.
Multiple operating conditions · Trajectory family synthesisOpen Variable-leg WorkbenchClassic Straight-line Mechanisms
Compare Watt, Chebyshev, Hoekens, and Peaucellier mechanisms, automatically identifying the best straight segment and its error.
Classic Mechanisms · StraightnessOpen Straight-line WorkbenchFree Mechanism Designer
Add joints and links like building blocks, choose an input link, and inspect motion and trajectories in real time.
N-link · Free TopologyStart building freely