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Clamp-on flow water jacket for 2 in tube (two halves, hose spigots)
How do I water-cool a plain tri-clamp tube? · Hardware · basis: Design values; M4 clearance holes ISO 273 medium
Used in Long Earth Society builds. Finned tri-clamp heat sink with PTFE thermal break
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
- Two halves bolted round the tube with four M4 screws; each half is its own water space with two Ø8 hose spigots (in and out), so the two run in series with a short hose between them. The inner wall is pressed on the tube by the bolts.
- On the performance engines it sits over the cooler zone, 9.5 mm behind the clamp face (a 2 in clamp reaches 7.13 mm).
- Optional: without it the cold end runs hot and the power falls; a wet rag on the cold end is the minimum.
Sizes
| feature | value |
|---|---|
| bore | Ø50.8 × 48 |
| water space | r 27.4–31.4 |
| spigots | 2 per half, Ø8 × 10 |
| bolts | 4 × M4 |
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 | Ø50.8 × 48 | 2 in tube OD | clamp | all |
| split | 1.0 total (0.5 per half) | the other half | clamp | all |
| ear holes | Ø4.5 | M4 clearance (ISO 273 medium) | designed | all |
| hose spigots | Ø8 × 10, Ø5 bore | 8 mm ID hose | press | all |
| start behind the clamp face | 9.5 | a 2 in clamp reaches 7.13 behind the face | 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
| water-jacket-half-2in-48-flow | clamp-on flow water-jacket half for 2 in tube: bore Ø50.8 × 48, inner wall 2, water space 4, outer wall 2, end walls 2; ears with 2 × Ø4.5; two Ø8 × 10 hose spigots (Ø5 bore) on the crown | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=tri-clamp-flow-water-jacket
How it fits
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Questions
Which way does the water go?
In at the spigot farther from the clamp face, out at the nearer one; put the outlets up so the jacket purges its air.