Frame for the 2 in tri-clamp tee diaphragm gamma — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/tri-clamp-diaphragm-gamma-frame/  (CC BY 4.0)
Basis: Positions from the engine layout (tools/gen_diaphragm.py gamma_layout); ISO 273 medium clearance for M3
Catalog version: 2026-10-20

Sizes: see table below
- One piece: a base plate, a ring that stands the hot cap 17.5 mm above a tea light (windows let the air in), a tower behind the engine, a shelf for the two crank stands and a bracket for the beam pivot post.
- Crank axis 208.0 above the base and 100 mm from the column axis, beam pivot 380.1 above the base.

feature  value
base  210 × 200 × 8
column ring  Ø50 / Ø42 × 33.5
shelf top  148.0
bracket top  326.1

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-diaphragm-gamma-frame/index.json
API: https://xemstudio.com/api/geometry?object=tri-clamp-diaphragm-gamma-frame