Library › Drone design › Drone frame layouts ·

H frame

What is an H quad frame? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio

Also called: h quad, hx frame, h frame quadcopter, fpv h frame, h vs x frame, racing h frame, rigid quad frame

Exact dimensions. True size, with no printing tolerance added.

sizes
2 in table

Notes

  • An H frame has parallel arms on a central pod; pilots find it the most rigid layout (IntoFPV), and it can keep props out of view with the camera forward (Oscar Liang).
  • UAVModel lists it for racing and low profile, but heavier and less agile.
  • The file is a reference example built by Xem Studio from the numbers above (Reference 5-inch build: 220 mm diagonal within Grepow's 210-250 mm class for 5 in props.). Sizes the sources do not fix are illustrative; scale the example to your own vehicle.

H frame size chart

parametervalue or rangesource
Layoutarms parallel, centre podUAVModel
5 in prop frame size210-250 mm diagonal (motor to motor)Grepow

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

IntoFPV forumFrame layouts, configurations and their characteristicswebPublisher's page; dimensions are facts
UAVModel blogFPV Drone Frame Selection Guide: Geometry, Materials, and Arm DesignwebPublisher's page; dimensions are facts
Oscar LiangTypes of multicopterwebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json

h-frame-layouth frame layout: 220 mm motor-to-motor diagonal, 5 in props (discs show the swept area; arms and plate illustrative)STEP · STL
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
Set it up →

Plain text: sheet.txt · JSON: /api/geometry?object=h-frame

H frame, isometric render of a generated part
Render of h-frame-layout from the free STEP; not to scale.

Fits with

Questions

H or X?

Oscar Liang notes ongoing debate; IntoFPV pilots rate H most rigid.