Low wing placement — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/low-wing/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)
Basis: Design rules and figures from the cited sources; example geometry by Xem Studio
Catalog version: 2026-10-20

Sizes: see table below
- A low wing produces an unstable dihedral effect from wing-fuselage interference, so it needs more geometric dihedral than a high wing for the same roll stability (Kitplanes, Wainfan).
- McCombs gives about 10-11 deg wing dihedral for rudder-only low-wing RC models, about 0-2 deg for aileron models, and 3-8 deg EVD for low-wing free-flight scale (Model Aviation). Low wings need less fin than high wings (McCombs 1992).
- Fighters and aerobatic aircraft aim for near-neutral lateral stability for quick roll response (Kitplanes).
- The file is a reference example built by Xem Studio from the numbers above. Sizes the sources do not fix are illustrative; scale the example to your own vehicle.

parameter  value or range  source
RC rudder-only, low wing dihedral  about 10-11 deg  McCombs 1994
RC with ailerons, low wing  about 0-2 deg  McCombs 1994
FF scale, low wing EVD  3-8 deg  McCombs 1994
Outdoor FF scale low wing  about 5 deg  McCombs 1992
Reference build  1000 x 200 mm, 2 deg dihedral (aileron model)  McCombs

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Kitplanes (B. Wainfan): Wind Tunnel: Roll's role in lateral stability (2008) — web — Publisher's page; dimensions are facts — https://www.kitplanes.com/wind-tunnel-135/
- Model Aviation (AMA), W.F. McCombs: Wing and Tail Dihedral for Models (Dec 1994) — web — Publisher's page; dimensions are facts — https://library.modelaviation.com/article/wing-and-tail-dihedral-models
- Model Aviation (AMA), W.F. McCombs: Vertical Tail Size for Models (Apr 1992) — web — Publisher's page; dimensions are facts — https://library.modelaviation.com/article/vertical-tail-size-models-1

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/low-wing/index.json
API: https://xemstudio.com/api/geometry?object=low-wing