Pulley

Component kind pulley (category mech, DSL name pulley, API v1)

Smooth rotating disc used as a belt anchor. Pairs with another pulley via mech.belt; the ratio is driven by the pitch diameters.

Parameters

`diameter` — Pitch diameter (mm). Drives the belt ratio: ω_to = ω_from · (d_from / d_to).
`width` — Face width along the spin axis (mm).
`boreDiameter` — Central bore diameter (mm), for mounting on a shaft.

Parameter	Type	Default	Constraints
`diameter`	Number	60	min: 1
`width`	Number	12	min: 1
`boreDiameter`	Number	8
`color`	String	—

Port	Type	Description
`axis`	`rotational`	Spin axis (rotational). Receives ω from the coupling or belt propagation.

Passive — ω is set by the belt or coupling attached to the axis port. Theta integrates from ω each tick.

pulley "P1" {
  diameter: 60
  width: 12
  at: position(0, 0, 0)
}

engine apiVersion · 1

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