Swash (wobble) plates Ø40 at 10, 15 and 20° — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/swash-plate-40mm/  (CC BY 4.0)
Basis: A follower at radius r on a plate tilted θ moves 2 r sin θ per turn; Ø40 × 4 plate on a Ø13 × 20 hub
Catalog version: 2026-10-20

Sizes: see table below
- A Ø40 × 4 plate set at 10, 15 or 20° on a Ø13 × 20 hub with a Ø5 bore; a radial Ø2.5 hole (M3 tap drill) 6 mm from the hub's mid-length locks it.
- Stroke = 2 × r × sin θ. At the rim (r 20): 6.9, 10.4, 13.7 mm; at r 18: 6.3, 9.3, 12.3 mm.
- Followers spaced round one plate drive several cylinders from one shaft; each peaks at a shaft angle set by its position.

file  tilt  stroke r 20  stroke r 18  hub  bore
swash-plate-40-10deg  10°  6.9  6.3  Ø13 × 20  5
swash-plate-40-15deg  15°  10.4  9.3  Ø13 × 20  5
swash-plate-40-20deg  20°  13.7  12.3  Ø13 × 20  5

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, 3 parts): https://xemstudio.com/files/hardware/swash-plate-40mm/index.json
API: https://xemstudio.com/api/geometry?object=swash-plate-40mm