Con-rods with Ø3 pin ends, 45 and 60 mm, 8 × 5 — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/pin-end-con-rods/  (CC BY 4.0)
Basis: Centres from the solved linkages (Ross yoke 60, alpha V-twin 60, can / LTD 45); Ø3 ends at the Ø3 pins; 5 thick for the syringe piston's 5 mm fork
Catalog version: 2026-10-20

Sizes: see table below
- Plain con-rods whose Ø3 end holes turn on Ø3 pins (fit: run). All are 5 thick, the width of the syringe piston's fork slot, with 8 mm wide ends.
- Conrod-45: 45 mm centres, 53 × 8 × 5, for the can and coffee-cup engines.
- Conrod-60: 60 mm centres, 68 × 8 × 5, yoke corner to piston on the Ross yoke alpha.
- Alpha-conrod-60: 60 mm centres on Ø8 ends joined by a 6 wide web, for the alpha V-twin, where both rods share one crank pin and keep 0.8 mm from the syringe barrel wall over a full turn.

file  centres  length  end width  thickness  holes  used on
conrod-45  45  53  8  5  Ø3  can engine, LTD engine
conrod-60  60  68  8  5  Ø3  Ross yoke alpha
alpha-conrod-60  60  68  8  5  Ø3  alpha V-twin

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, 3 parts): https://xemstudio.com/files/hardware/pin-end-con-rods/index.json
API: https://xemstudio.com/api/geometry?object=pin-end-con-rods