Hanger post: holds a spool hanger round a horizontal 2 in tube — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/tube-hanger-post/  (CC BY 4.0)
Basis: Hole spacing = the 2 in spool hanger's bar holes (±39.4); bar face 39.4 from the tube axis
Catalog version: 2026-10-20

Sizes: see table below
- An upright plate with a foot: the spool hanger's bar bolts to its face with two M5 × 16 into tapped holes 78.8 apart, the hanger turned so its ring stands vertical round a horizontal tube with its axis 235.3 above the bench.
- On the twin-piston engine one post sits under each bounce spool.

feature  value
axis height  235.3
holes  2 × M5 tapped, 78.8 apart

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Xem Studio: tools/gen_ta_power.py: the network model and every dimension on this page — code — CC BY 4.0 — https://xemstudio.com/
- 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/tube-hanger-post/index.json
API: https://xemstudio.com/api/geometry?object=tube-hanger-post