Clamp-on water jacket for a 2 in tri-clamp tube, 20 mm, with hose spigots (optional) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/tri-clamp-clamp-on-water-jacket/  (CC BY 4.0)
Basis: Design values: closed half-annular water chambers whose inner wall clamps on the Ø50.8 tube
Catalog version: 2026-10-20

Sizes: see table below
- Two halves clamp onto the 3 in cooler spool above its hanger (2 × M4 × 12); each half is its own closed water chamber with a hose spigot in and out: run them in series. Heat to reject at the design point: about 53 W.
- Optional: without it, a wet cloth round the cooler spool or air alone will do for a short run at low charge; the engine's power falls as the cold end warms.

feature  value
length  20.0
chamber  5 deep, 1.5 walls
spigots  Ø6 × 10, Ø4 bore

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- 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/tri-clamp-clamp-on-water-jacket/index.json
API: https://xemstudio.com/api/geometry?object=tri-clamp-clamp-on-water-jacket