Swash (wobble) plate: Ø40 plates at 10, 15 and 20° with a ball-end follower — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/swash-plate/  (CC BY 4.0)
Basis: Swash plate geometry: a follower at radius r on a plate tilted θ moves r·sin θ each side (stroke 2r·sin θ); Ø5 shaft
Catalog version: 2026-10-20

Sizes: see table below
- A disc fixed at an angle on a shaft; a follower pressed against it reciprocates once per turn.
- Stroke = 2 × r × sin θ for a follower at radius r. At the Ø40 rim: 6.9 mm at 10°, 10.4 mm at 15°, 13.7 mm at 20°.
- Several followers spaced around one plate drive several cylinders from one shaft.
- The follower is an 8 mm square pushrod with a Ø8 ball end and a Ø3 hole in its tail.

plate  tilt  stroke at rim (r 20)  stroke at r 18
Ø40  10°  6.9 mm  6.3 mm
Ø40  15°  10.4 mm  9.3 mm
Ø40  20°  13.7 mm  12.3 mm

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Wikipedia: Swashplate — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Swashplate
- Long Earth Society: Engine and rig builds on extrusion frames — web, video — LES site — https://longearthsociety.com/engineering/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 4 parts): https://xemstudio.com/files/hardware/swash-plate/index.json
API: https://xemstudio.com/api/geometry?object=swash-plate