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Frame for the 2 in tri-clamp elbow diaphragm alpha
What holds the tri-clamp elbow diaphragm alpha together? · Hardware · basis: Positions from the engine layout (tools/gen_diaphragm.py alpha_layout); the feet seats are cut by the fittings' own outer surfaces
Long Earth Society build part. The frame of my elbow diaphragm 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
- One piece: a base plate, a foot under the elbow (its seat is the elbow's outer surface) that carries the cold leg, a foot under the capped run of the hot tee, and a diagonal strut from the base up to a bearing block with two 625 pockets at the crank.
- The strut runs 40–56 mm behind the plane of the legs, clear of every clamp and of the flywheel.
Sizes
| feature | value |
|---|---|
| base | 430 × 130 × 8 |
| crank above elbow centre | 257.4, 257.4 |
| bearings | 2 × 625 |
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 |
|---|---|---|---|---|
| bearing pockets | Ø16 × 5 | 625 bearing | press | alpha-frame-* |
| shaft passage | Ø11.2 | Ø5 crankshaft (no contact) | designed | alpha-frame-* |
| foot seats | Ø50.8 (tube OD), elbow outer surface | 2 in elbow and tee | designed | alpha-frame-* |
| torch-stand holes | Ø4.5 | M4 clearance (ISO 273 medium) | designed | alpha-frame-* |
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
| alpha-frame-2in | frame for the 2 in elbow diaphragm alpha: base 430 × 130 × 8, feet under the elbow and the hot tee, diagonal strut to a bearing block with two 625 pockets at the crank (257.4, 257.4) from the elbow centre | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=tri-clamp-diaphragm-alpha-frame

How it fits
In these build lists
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Questions
What does the frame carry?
Both legs (two feet), the crankshaft bearings (strut block) and the torch stand (two M4 holes).