Octocopter (flat) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/octocopter/  (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
- Eight motors in one plane give more lift and redundancy than a hex, for heavy filming rigs, but draw more current and cost more (Oscar Liang). It tolerates a failed motor if enough thrust remains (r/multicopter wiki).
- The file is a reference example built by Xem Studio from the numbers above (Illustrative heavy-lift frame.). Sizes the sources do not fix are illustrative; scale the example to your own vehicle.

parameter  value or range  source
Motors  8, four CW/CCW pairs  Oscar Liang

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Oscar Liang: Types of multicopter — web — Publisher's page; dimensions are facts — https://oscarliang.com/types-of-multicopter
- r/multicopter wiki (mirror): Anatomy of a Multicopter — web — Publisher's page; dimensions are facts — https://r.datuan.dev/r/multicopter/wiki/anatomy

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