Frame for the 2 in tri-clamp cross diaphragm gamma — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/tri-clamp-cross-engine-frame/  (CC BY 4.0)
Basis: Positions from the engine layout (tools/gen_cross_engine.py cross_layout); ISO 273 medium clearance for M5; Ø3.3 for an M4 thread
Catalog version: 2026-10-20

Sizes: see table below
- One piece: a base plate with the torch stand on it, and a wall behind the engine. The 2 in spool hanger clamps the cross's lower run and its bar bolts to the wall with two M5 × 25 and nuts, so the whole engine hangs over the flame.
- A window in the wall leaves room for the jacket's fill port and the heat shield.

feature  value
base  140 × 150 × 8
wall  124 × 10, top 227.5
hanger screws  2 × Ø5.5 at x ±39.4, z 213.5
torch stand  2 × Ø3.3 at x ±25, y 28

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- ISO: ISO 273 clearance holes for bolts and screws (fine / medium / coarse) — standard — dimensions are facts [verify license at link] — https://www.iso.org/standard/4196.html
- 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-cross-engine-frame/index.json
API: https://xemstudio.com/api/geometry?object=tri-clamp-cross-engine-frame