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Torch stand for a horizontal tri-clamp hot leg
How do I hold a torch under a Stirling engine's hot end? · Hardware · basis: Design values; ISO 273 clearance for the M4 foot screws
Long Earth Society build part. The stand that holds the flame under my elbow alpha. 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
- A foot, a post and a ring: the torch head goes up through the Ø32 ring and three M4 set screws centre it, so the flame points straight up at the middle of the hot leg.
- The post stands to one side so the space under the ring is open. The foot bolts to the engine frame with two M4 screws.
Sizes
| part | size_mm |
|---|---|
| foot | 70 × 40 × 5 |
| ring | Ø48 / Ø32 × 14 |
| ring top above foot | 40 |
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 |
|---|---|---|---|---|
| ring bore | Ø32 | torch head (centred by the set screws) | designed | torch-stand-* |
| set-screw holes | 3 × Ø3.3 | M4 tap drill | designed | torch-stand-* |
| foot holes | 2 × Ø4.5 | M4 clearance (ISO 273 medium) | designed | torch-stand-* |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| ISO | ISO 273 clearance holes for bolts and screws (fine / medium / coarse) | standard | dimensions are facts verify |
| 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
| torch-stand-40 | torch stand: foot 70 × 40 × 5 with 2 × Ø4.5 at ±25, post 14 × 14, ring Ø48 / Ø32 × 14, ring top 40 above the foot, 3 × M4 tapped (Ø3.3) at 120° | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=tri-clamp-torch-stand
How it fits
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Questions
What torch fits?
Any torch head that passes the Ø32 ring; the three set screws centre it.