# Frame for the tri-clamp twin walking-beam gamma

> What frame holds two tri-clamp beam engines on one crank?

- Category: Hardware › Stirling & thermoacoustic
- Kind: Hardware
- Basis: Design values
- Page: https://xemstudio.com/objects/tri-clamp-twin-walking-beam-gamma-frame/ · JSON: https://xemstudio.com/api/geometry?object=tri-clamp-twin-walking-beam-gamma-frame · Plain text: https://xemstudio.com/objects/tri-clamp-twin-walking-beam-gamma-frame/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- One base for two walking-beam units side by side, 139 mm apart: cradles, two beam posts (mirror images), the shared crank's two uprights and the generator bracket.

## Sizes

| feature | value |
|---|---|
| base | 730 × 274 × 8 |
| unit spacing | 139.0 |

## Where the files are

- Long Earth Society: [Engine builds](https://longearthsociety.com/engineering/) — web, video — LES site

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/tri-clamp-twin-walking-beam-gamma-frame/index.json

- twin-walking-beam-gamma-frame-2in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-twin-walking-beam-gamma-frame/twin-walking-beam-gamma-frame-2in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-twin-walking-beam-gamma-frame/twin-walking-beam-gamma-frame-2in.stl) — twin walking-beam gamma frame: base 730 × 274 × 8, four cradles, two beam posts, two crank uprights with 608 pockets, generator bracket, holes for two torch stands and two shrouds

## Questions

**Why mirror the second unit?**

So both units' rods and links run on the crank's inner side and one shaft carries both webs, the flywheel and the pulley between the two bearings.

## Fits with

- [Build list: Tri-clamp twin walking-beam gamma generator, 2 in, chargeable](https://xemstudio.com/objects/list-tri-clamp-twin-walking-beam-gamma/)