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Mug LTD chamber ring Ø76 × 23

Name: Mug LTD chamber ring Ø76 × 23 dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

How tall should the chamber of a small LTD Stirling engine be? · Hardware · basis: 7 mm wall so the Ø5 syringe port at x 35 still opens into the chamber; 23 tall so a 6 mm displacer travels 15 with 1 mm at each end

Long Earth Society build part. Chamber of the mug LTD. The engines

Exact dimensions. Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part. Mating features

sizes: 3 in table

Notes

Ø76 bore, Ø90 outside (7 wall), 23 tall; 5 × Ø3.4 for the chamber screws on R41 and 2 × M3 tapped 2 deep in the top face at (35.5, ±20.5) for the crank pedestal's foot.
Chamber 23 − displacer 6 = 17 free; the 15 mm stroke leaves 1 mm at the top and bottom of travel. 15 mm (7.5 throw) is the shortest stroke in the Ø3-bore crank discs whose con-rod eye (R4) clears a Ø3 shaft.

Sizes

feature	size_mm
bore × height	76 × 23
outside	Ø90
displacer gap	2 radial, 1 at each end of stroke

Mating features

Drawn at the exact size. Open press, slide, run and socket features by your process's clearance; leave designed gaps and clamp fits as drawn.

feature	exact	mates with	fit	files
bore	Ø76	displacer Ø72 (2 radial gap)	designed	all
screw holes	Ø3.4, 5 on R41	M3 clearance	designed	all
pedestal holes	Ø2.5 × 2 deep (M3 tapped), at (35.5, ±20.5)	shcs-m3x8 through the pedestal foot	designed	all
faces	flat	bottom and top plates (static seal)	clamp	all

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Atlanta Vinyl Store	Premium 11 oz sublimation mug: 3.75 in H × 3.25 in D	web	listing verify
James R. Senft	An Introduction to Low Temperature Differential Stirling Engines	book	Moriya Press verify
Wikipedia	Stirling engine	web	CC BY-SA 4.0 (text)
Long Earth Society	Engine builds	web, video	LES site

Free files

★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

mug-ltd-chamber-ring-76-h23

chamber ring Ø76 bore × 23, Ø90 outside (7 wall), 5 × Ø3.4 (M3 clearance) on R41, 2 × M3 tapped (Ø2.5) 2 deep in the top face at (35.5, ±20.5) for the crank pedestal

STEP · STL

Plain text: sheet.txt · JSON: /api/geometry?object=mug-ltd-chamber-ring