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Transfer tee for 4 × 6 mm tube
What joins the two cylinders of an alpha Stirling engine? · Hardware · basis: Sockets at the 6 mm OD of 4 × 6 tube (fit: press), flow bores at its 4 mm ID
Long Earth Society build part. Alpha demonstrator and the twin-crank for the two-spool 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
- 4 in table
Notes
- A tee with a Ø10 body: the run along X with port faces 13 mm either side of the centre, the branch at right angles with its port face 13 mm out.
- Each port is a Ø6 socket 8 deep: the 6 mm OD of 4 × 6 tube pushes in (fit: press) until it bottoms 5 mm from the centre. Ø4 flow bores, the tube's ID, join the three socket floors.
- Same ports as the transfer elbow; the tee joins three lines (hot cylinder, cold cylinder and a third line such as a gauge).
Sizes
| parameter | value |
|---|---|
| body | Ø10, run 26 port to port, branch 13 |
| sockets | Ø6 × 8 (3) |
| flow bores | Ø4 |
| tube end from centre | 5 |
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 |
|---|---|---|---|---|
| transfer-tee sockets | Ø6 × 8 | 6 mm OD of 4 × 6 tube | press | transfer-tee-* |
| transfer-tee flow bores | Ø4 | 4 mm tube ID (no contact) | designed | transfer-tee-* |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Wikipedia | Stirling engine | web | CC BY-SA 4.0 (text) |
| 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
| transfer-tee-4mm | transfer tee for 4 × 6 tube: Ø10 run (port faces ±13) and branch (port face 13), Ø6 sockets 8 deep for the 6 mm tube OD, Ø4 flow bores (the tube ID) | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=transfer-tee-4mm
How it fits
Goes in or on
Alpha V-twin frame for two 10 mL syringes at 90°between the V-twin's syringe tips
Ross yoke alpha frame for two 10 mL syringesbetween the Ross alpha's syringe tipsConnects to
Silicone tube 1 × 3 to 10 × 14 mm4 mm tube in each Ø4 bore
Plastic syringes 1–60 mL as pistons and cylinderstube to each syringe tip
Regenerator matrix disc Ø44 / Ø32 × 0.5 mmregenerator in the line between the cylindersYou might also need
Questions
What size tube does the transfer tee take?
4 × 6 tube: the 6 mm OD goes into Ø6 sockets 8 deep (fit: press); the Ø4 flow bores match the tube's ID.
What turns a transfer line through 90°?
The transfer elbow, with the same Ø6 × 8 sockets; the two-syringe alphas on this site use elbows between their tips.