{
 "version": "2026-10-20",
 "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.",
 "slug": "e-flite-apprentice-sts-1-5m",
 "name": "E-flite Apprentice STS 1.5m (smart trainer)",
 "kind": "modern",
 "category": "RC planes",
 "group": "E-flite trainers and sport planes",
 "year": null,
 "question": "What are the dimensions of the E-flite Apprentice STS 1.5m?",
 "tags": [
  "rc plane",
  "rc airplane",
  "radio control",
  "model aircraft",
  "e-flite trainers and sport planes"
 ],
 "aliases": [
  "apprentice sts dimensions",
  "e-flite apprentice sts wingspan",
  "apprentice sts 1.5m length",
  "efl3700 specs",
  "efl3750 apprentice specifications",
  "apprentice sts cg",
  "apprentice sts battery size",
  "e-flite apprentice trainer size",
  "apprentice sts envergadura",
  "apprentice sts spannweite",
  "apprentice sts medidas"
 ],
 "overall_mm": {
  "length": 1080,
  "width": 1499,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/e-flite-apprentice-sts-1-5m/",
 "sheet_txt": "https://xemstudio.com/objects/e-flite-apprentice-sts-1-5m/sheet.txt",
 "sheet": {
  "basis": "Secondary source: RaceDayQuads (copy of Horizon Hobby spec table) (copy of the maker's figures; the maker publishes none directly)",
  "overall_mm": {
   "length": 1080,
   "width": 1499,
   "height": null
  },
  "notes": [
   "The Apprentice STS is E-flite's 1.5 m high-wing trainer (EFL3700 RTF / EFL3750 BNF Basic). The file models only the wingspan × length plan-view envelope.",
   "Height, wing area and prop size are not published on the listing used; the figures come from a retailer copy of Horizon Hobby's spec table, so the entry is marked secondary.",
   "True size, no printing tolerance added. Only published numbers are used; anything not published is said so.",
   "Secondary source: the numbers come from a retailer or magazine copy of the maker's specification."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "Wingspan",
     "59 in (1499 mm)"
    ],
    [
     "Length",
     "42.5 in (1080 mm)"
    ],
    [
     "Flying weight",
     "1500–2000 g"
    ],
    [
     "Motor",
     "Brushless outrunner (installed); size/Kv not published on listing"
    ],
    [
     "Servos",
     "(2) 13 g digital and (4) 37 g servos (installed)"
    ],
    [
     "Recommended battery",
     "3S 11.1 V 3200–4000 mAh LiPo, EC3 or IC3 connector"
    ],
    [
     "CG",
     "3.125 in (79 mm) behind wing leading edge at the fuselage"
    ],
    [
     "Height",
     "not published"
    ],
    [
     "Wing area",
     "not published"
    ]
   ]
  }
 },
 "sheet_text": "E-flite Apprentice STS 1.5m (smart trainer) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/e-flite-apprentice-sts-1-5m/  (sheet CC BY 4.0)\nBasis: Secondary source: RaceDayQuads (copy of Horizon Hobby spec table) (copy of the maker's figures; the maker publishes none directly)\nCatalog version: 2026-10-20\n\nOverall (mm): length 1080, width 1499\n- The Apprentice STS is E-flite's 1.5 m high-wing trainer (EFL3700 RTF / EFL3750 BNF Basic). The file models only the wingspan × length plan-view envelope.\n- Height, wing area and prop size are not published on the listing used; the figures come from a retailer copy of Horizon Hobby's spec table, so the entry is marked secondary.\n- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.\n- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.\n\ndimension  value\nWingspan  59 in (1499 mm)\nLength  42.5 in (1080 mm)\nFlying weight  1500–2000 g\nMotor  Brushless outrunner (installed); size/Kv not published on listing\nServos  (2) 13 g digital and (4) 37 g servos (installed)\nRecommended battery  3S 11.1 V 3200–4000 mAh LiPo, EC3 or IC3 connector\nCG  3.125 in (79 mm) behind wing leading edge at the fuselage\nHeight  not published\nWing area  not published\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- RaceDayQuads (copy of Horizon Hobby spec table): E-flite Apprentice STS 1.5m RTF Basic — web — Publisher's page; dimensions are facts — https://www.racedayquads.com/products/efl370001-e-flite-apprentice-sts-1-5m-rtf-basic-smart-trainer-electric-airplane-1500mm-w-safe-technology\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/e-flite-apprentice-sts-1-5m/index.json\nAPI: https://xemstudio.com/api/geometry?object=e-flite-apprentice-sts-1-5m\n",
 "sources": [
  {
   "publisher": "RaceDayQuads (copy of Horizon Hobby spec table)",
   "title": "E-flite Apprentice STS 1.5m RTF Basic",
   "url": "https://www.racedayquads.com/products/efl370001-e-flite-apprentice-sts-1-5m-rtf-basic-smart-trainer-electric-airplane-1500mm-w-safe-technology",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "rc-lipo-batteries",
  "e-flite-timber-x-1-2m",
  "e-flite-valiant-1-3m",
  "e-flite-carbon-z-cub-ss-2-1m"
 ],
 "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": "What battery fits the Apprentice STS?",
   "a": "Horizon specifies a 3S 11.1 V 3200–4000 mAh LiPo with EC3 or IC3 connector."
  },
  {
   "q": "Where is the Apprentice STS CG?",
   "a": "3.125 in (79 mm) back from the wing leading edge, measured at the fuselage."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "e-flite-apprentice-sts-1-5m-plan-outline",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/e-flite-apprentice-sts-1-5m/e-flite-apprentice-sts-1-5m-plan-outline.step",
   "stl": "https://xemstudio.com/files/hardware/e-flite-apprentice-sts-1-5m/e-flite-apprentice-sts-1-5m-plan-outline.stl",
   "note": "Plan outline 1080 × 1499 mm, 1 mm reference thickness (height not published)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/e-flite-apprentice-sts-1-5m/index.md"
}