Xem Studiomeasured geometryLibrary › Stirling engines › Tri-clamp engine parts ·
Bored 2 in power spool: 2 in × 5 in spool bored to Ø48.00
How do I make a power cylinder from a 2 inch tri-clamp spool? · Hardware · basis: Fabrication spec: a 2 in spool (tube Ø50.8 × 1.65) 127 face to face, its bore finished to Ø48.00 end to end (a machinist bores and hones it); 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
- The stock bore is Ø47.5; finished to Ø48.00 it leaves 1.40 of wall. The piston is drawn at Ø48.00 exactly: the running fit is the machinist's (see Mating features).
- Both faces stay standard ISO 2852 2 in faces: Type B gaskets and stock 2 in clamps at each end.
Sizes
| part | length_mm | bore_mm | wall_mm |
|---|---|---|---|
| spool-2in-5in-bored-48.00 | 127.0 | 48.0 | 1.4 |
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 | Ø48.00 × 127 (finished) | power piston Ø48.00 | run | all |
| faces | ISO 2852 2 in | tc-gasket-2in + 2 in clamp | clamp | 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
| spool-2in-5in-bored-48.00 | 2 in spool, 127 face to face (5 in), bored through to Ø48.00 over its full length; ISO 2852 faces | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=htd-bored-power-spool
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
Why 48.00?
The smallest round number that cleans up the stock Ø47.5 bore along its whole length, faces included.