Library › Stirling engines › Tri-clamp engine parts ·
Burner shroud for a 10 in hot cup (optional)
How do I keep a burner's flame on the bottom of a big tri-clamp pot? · Hardware · basis: Exact geometry
Long Earth Society build part. Parts of the HTD engines. 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
- 1 in table
Notes
- A separate heat exchanger, optional: a sleeve round the cup's lower end that holds the flame against the floor and the lower wall. Three tabs bolt to the stand's legs (M5 × 20 and nuts). The engine runs without it.
Sizes
| id_mm | od_mm | z_mm |
|---|---|---|
| 272.0 | 276.0 | 100–190 |
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 | Ø272 | hot cup Ø254 (9 radial, flue) | designed | all |
| tab holes | Ø5.5 | shcs-m5x20 | designed | all |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| 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
| burner-shroud-10in | burner shroud (heat exchanger, optional): tube Ø272/Ø276 z 100..190 round the cup floor, three tabs to the legs | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=htd-burner-shroud-10in

How it fits
In these build lists
HTD engine, 10 in tri-clamp…A big flat gamma Stirling for a propane burner: a Ø240 displacer in a 10 in weld…You might also need
Questions
Is the shroud needed?
No: it keeps more of the flame on the floor.

