Ross yoke crank disc Ø24, 6 mm throw — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/ross-crank-disc/  (CC BY 4.0)
Basis: Solved Ross linkage: crank throw e = 6
Catalog version: 2026-10-20

Sizes: see table below
- The crank that drives the Ross yoke: Ø24 × 6, Ø5 bore (fit: slide) for the crankshaft, Ø2.5 radial hole (M3 tap size) for the grub screw.
- One Ø3 hole (fit: press) at 6 mm takes a Ø3 × 20 crank pin; the yoke's bottom vertex rides on it, and a 3 mm collar holds it on.

parameter  value
disc  Ø24 × 6
bore  Ø5
throw  6
pin hole  Ø3
grub hole  Ø2.5

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

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/ross-crank-disc/index.json
API: https://xemstudio.com/api/geometry?object=ross-crank-disc