{
 "version": "2026-10-20",
 "license": "Dimension sheets are written by Xem Studio from the cited sources and are free to use (CC BY 4.0, attribute 'Xem Studio'). Linked files belong to their publishers under the license shown; Xem Studio does not host them. 'license_verified: false' means the license shown is from memory or the publisher's page as last read and should be confirmed at the link before commercial use.",
 "slug": "tri-clamp-twin-walking-beam-gamma-frame",
 "name": "Frame for the tri-clamp twin walking-beam gamma",
 "kind": "hardware",
 "category": "Hardware",
 "group": "Stirling & thermoacoustic",
 "year": null,
 "question": "What frame holds two tri-clamp beam engines on one crank?",
 "tags": [
  "frame",
  "tri-clamp",
  "stirling",
  "long earth society"
 ],
 "aliases": [
  "twin beam stirling frame"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": true,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/tri-clamp-twin-walking-beam-gamma-frame/",
 "sheet_txt": "https://xemstudio.com/objects/tri-clamp-twin-walking-beam-gamma-frame/sheet.txt",
 "sheet": {
  "basis": "Design values",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "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."
  ],
  "table": {
   "columns": [
    "feature",
    "value"
   ],
   "rows": [
    [
     "base",
     "730 × 274 × 8"
    ],
    [
     "unit spacing",
     139
    ]
   ]
  }
 },
 "sheet_text": "Frame for the tri-clamp twin walking-beam gamma — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/tri-clamp-twin-walking-beam-gamma-frame/  (CC BY 4.0)\nBasis: Design values\nCatalog version: 2026-10-20\n\nSizes: see table below\n- 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.\n\nfeature  value\nbase  730 × 274 × 8\nunit spacing  139.0\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Long Earth Society: Engine builds — web, video — LES site — https://longearthsociety.com/engineering/\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/tri-clamp-twin-walking-beam-gamma-frame/index.json\nAPI: https://xemstudio.com/api/geometry?object=tri-clamp-twin-walking-beam-gamma-frame\n",
 "sources": [
  {
   "publisher": "Long Earth Society",
   "title": "Engine builds",
   "url": "https://longearthsociety.com/engineering/",
   "formats": [
    "web",
    "video"
   ],
   "license": "LES site",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "list-tri-clamp-twin-walking-beam-gamma"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no printing tolerance)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn.",
 "mating": [],
 "faq": [
  {
   "q": "Why mirror the second unit?",
   "a": "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."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "twin-walking-beam-gamma-frame-2in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "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",
   "note": "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"
  }
 ],
 "markdown": "https://xemstudio.com/objects/tri-clamp-twin-walking-beam-gamma-frame/index.md"
}