{
 "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": "rc-buggy-wing",
 "name": "RC buggy / off-road rear wing",
 "kind": "standard",
 "category": "Car design",
 "group": "Car aero",
 "year": null,
 "question": "Why are RC buggy wings so big and flat with tall side dams?",
 "tags": [
  "vehicle design",
  "car aero",
  "rc design",
  "aerodynamics"
 ],
 "aliases": [
  "rc buggy wing",
  "1/10 buggy wing",
  "rc off road wing",
  "short course wing",
  "buggy wing side dams",
  "rc wing angle",
  "high downforce buggy wing",
  "7 inch buggy wing",
  "rc truck wing",
  "1/8 buggy wing",
  "rc wing gurney lip"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/rc-buggy-wing/",
 "sheet_txt": "https://xemstudio.com/objects/rc-buggy-wing/sheet.txt",
 "sheet": {
  "basis": "Design rules and figures from the cited sources; example geometry by Xem Studio",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Off-road RC wings are large, thin polycarbonate plates with tall side dams. EFRA lets a 1/10 off-road wing be 220 mm wide with its profile inside an 80 x 80 mm box, and any side dam inside 80 x 80 mm.",
   "The wing adds rear traction, high-speed stability and control in the air; more rear wing gives a nose-up attitude on jumps (CompetitionX). Tall side dams are sold specifically to add side bite and centre dividers for straight-line stability (LiveRC).",
   "Short-course trucks are covered by their own class rules; the fetched sources do not give their wing dimensions.",
   "Used on: 1/10 2WD and 4WD off-road buggies.",
   "The file is a reference example built by Xem Studio from the numbers above (EFRA 1/10 off-road maximum box; aoa illustrative.). Sizes the sources do not fix are illustrative; scale the example to your own vehicle."
  ],
  "table": {
   "columns": [
    "parameter",
    "value or range",
    "source"
   ],
   "rows": [
    [
     "1/10 off-road wing",
     "max 220 mm wide; profile in 80 x 80 mm rectangle",
     "EFRA"
    ],
    [
     "Side dam",
     "fit 80 x 80 mm rectangle",
     "EFRA"
    ],
    [
     "1/10 off-road overall width",
     "max 250 mm",
     "EFRA"
    ],
    [
     "Example aftermarket wing width",
     "7 in (178 mm)",
     "LiveRC"
    ]
   ]
  }
 },
 "sheet_text": "RC buggy / off-road rear wing — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/rc-buggy-wing/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)\nBasis: Design rules and figures from the cited sources; example geometry by Xem Studio\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Off-road RC wings are large, thin polycarbonate plates with tall side dams. EFRA lets a 1/10 off-road wing be 220 mm wide with its profile inside an 80 x 80 mm box, and any side dam inside 80 x 80 mm.\n- The wing adds rear traction, high-speed stability and control in the air; more rear wing gives a nose-up attitude on jumps (CompetitionX). Tall side dams are sold specifically to add side bite and centre dividers for straight-line stability (LiveRC).\n- Short-course trucks are covered by their own class rules; the fetched sources do not give their wing dimensions.\n- Used on: 1/10 2WD and 4WD off-road buggies.\n- The file is a reference example built by Xem Studio from the numbers above (EFRA 1/10 off-road maximum box; aoa illustrative.). Sizes the sources do not fix are illustrative; scale the example to your own vehicle.\n\nparameter  value or range  source\n1/10 off-road wing  max 220 mm wide; profile in 80 x 80 mm rectangle  EFRA\nSide dam  fit 80 x 80 mm rectangle  EFRA\n1/10 off-road overall width  max 250 mm  EFRA\nExample aftermarket wing width  7 in (178 mm)  LiveRC\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- EFRA: EFRA Handbook 2010, Appendix 3: Electric Cars — web — Publisher's page; dimensions are facts — https://www.efra.ws/wp-content/uploads/2010/03/Handb10App3.pdf\n- LiveRC: Revolution Design 7in ultra high downforce wing — web — Publisher's page; dimensions are facts — https://www.liverc.com/news/new-revolution-design-7-ultra-high-downforce-wing/\n- CompetitionX: RC Wings Explained — web — Publisher's page; dimensions are facts — https://www.competitionx.com/?p=489\n\nFree files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/rc-buggy-wing/index.json\nAPI: https://xemstudio.com/api/geometry?object=rc-buggy-wing\n",
 "sources": [
  {
   "publisher": "EFRA",
   "title": "EFRA Handbook 2010, Appendix 3: Electric Cars",
   "url": "https://www.efra.ws/wp-content/uploads/2010/03/Handb10App3.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "LiveRC",
   "title": "Revolution Design 7in ultra high downforce wing",
   "url": "https://www.liverc.com/news/new-revolution-design-7-ultra-high-downforce-wing/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "CompetitionX",
   "title": "RC Wings Explained",
   "url": "https://www.competitionx.com/?p=489",
   "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": [
  "rear-wing-single-element",
  "rear-wing-dual-element",
  "swan-neck-wing-mount",
  "gurney-flap-wickerbill",
  "wing-endplates",
  "front-splitter"
 ],
 "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 does more wing change jumps?",
   "a": "Rear downforce and drag pitch the car nose-up in the air (CompetitionX)."
  }
 ],
 "files_license": {
  "name": "Xem Studio Design License",
  "holder": "Xem Studio",
  "url": "https://xemstudio.com/license/",
  "note": "Xem Studio's own design: free to use, print, modify and sell things made from it; not to be republished or redistributed as files."
 },
 "offers": [
  {
   "file": "rc-buggy-wing-rear-wing",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "Xem Studio Design License",
   "step": "https://xemstudio.com/files/hardware/rc-buggy-wing/rc-buggy-wing-rear-wing.step",
   "stl": "https://xemstudio.com/files/hardware/rc-buggy-wing/rc-buggy-wing-rear-wing.stl",
   "note": "single rear wing: span 220 × chord 80 mm at 6°, endplates 80 mm, inverted NACA 4412 section (mounts from below)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/rc-buggy-wing/index.md"
}