compare

Two front axles, one sweep.

bellcrank's comparison view: the Sample front in red-orange and the Level-arm front in blue, overlaid in one 3D scene, with left-wheel camber and toe charts for the 41-step sweep beside it, and a color key noting six hardpoints moved.
Sample front vs. Level-arm front, overlaid in bellcrank's 3D viewer left-wheel camber and toe · 41-step heave-then-roll sweep
Live: drag the slider or click a chart to step both systems; drag the 3D view to orbit. Interactive in a desktop browser. Shown here as a still of its opening view.

What was edited

Six hardpoints, 20 mm each

Level-arm front is the Sample front with six hardpoints moved: the inner pivots of both lower control arms raised 20 mm, front and rear, and both strut top mounts moved 20 mm inboard. At ride height, the roll center moves from about −24 mm to about +34 mm.

What to look at

Camber and toe, step by step

Heave runs first, ±40 mm, then roll, with the two posts moving ±30 mm in opposition. The edited front changes camber more through both: the two camber curves separate by up to about 0.38°. Its toe moves less — about −0.49° to +0.65° over the sweep, against −1.04° to +1.26° for the Sample front.

In your account

Your own results, side by side

Stack two or three of your own results in one 3D scene, charted together, with color-coded deltas against the baseline you pick. Result comparison is part of Pro, Teams and Student Teams.

result

Every channel a suspension engineer asks for.

Per corner, per step, straight from the solver's post-processor.

  • Wheel & axle Camber, toe, wheel travel, contact patch, track.
  • Centers Roll center and instant centers, front- and side-view.
  • Steering axis Caster, kingpin inclination, scrub radius, trail and ratio.
  • Installation Motion ratio, coilover compression, anti-roll-bar torsion.
  • Raw geometry Every hardpoint and body pose, at every step.
  • Rig inputs Plot any channel against the real rig input.

MCP

Drive it from your coding agent

Add bellcrank's MCP server at api.bellcrank.io/mcp with your own API key, and your agent can build an axle, run a sweep and read the channels back from Claude Code, Cursor or any MCP client that can send an API key header.

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