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Mug LTD displacer Ø72 × 6

Name: Mug LTD displacer Ø72 × 6 dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

What size displacer for a mug-sized LTD Stirling engine? · Hardware · basis: 2 mm radial gap to the Ø76 chamber like the LTD kit; swept volume at 15 mm stroke 61.1 mL

Long Earth Society build part. Displacer 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: 4 in table

Notes

Ø72 × 6 with a Ø2 bore for the rod (pressed through, flush at the bottom). Swept volume 61.1 mL against the 5 mL glass piston's 1.87 mL: ratio 33.
2 mm radial gap to the chamber wall (designed); 1 mm end gaps at the ends of travel.

Sizes

feature	value
displacer	Ø72 × 6
stroke	15
swept volume	61.1 mL
volume ratio	33

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
rod bore	Ø2	Ø2 displacer rod	press	all
outside	Ø72 in a Ø76 bore	chamber ring (2 radial gap)	designed	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