5 inch speed quad frame

A printed 5 inch speed quad of my own design, built round its thrust axis like the record breakers.

Wheelbase: 223.8 mm
Props: 5.1 in
Print time: 6.2 h on 3 plates
Filament: 199.5 g

Colourway

PETG HF red main
PETG HF black second
PETG HF white accent

About the design

A 5 inch FPV quad for top speed, printed in PETG HF and modelled in Blender. Its body stands along the thrust axis, as the record speed quads' do, because a quad leaning 70 to 80 deg at full speed meets the air nearly along that axis. The camera sits in a pointed nose with 45 to 75 deg of uptilt, the stack in the hub and the battery upright in a tapered tail whose four fins are its feet. Teardrop arms bolt into the hub, so a crash costs one arm, and each carries its motor hanging below a dome. It flies on 2306 motors, 5.1 in props and 6S.

What you can change

Prop size from 4.5 to 5.5 in
Motor, battery and stack
Camera size and its range of uptilt

Specifications

Wheelbase: 223.8 mm
Props: 5.1 in
Motors: 4 x EMAX ECO II 2306 1700 kV
Battery: Tattu R-Line 6S 1050 mAh 130C
Stack: SpeedyBee F405 V4 BLS 55A stack
Mass ready to fly (g), my estimate: 594
Printed parts: 200 g
Arm's first bending modes, up and down and in plane (Hz), my estimate: 221 and 106
Frontal area at 70 and 80 deg of lean (cm²): 130 and 114
Lean it stands on its fins up to: 20 deg

Printing

Plates, print hours and filament grams for each Bambu Studio project
Project	Plates	Hours	Grams
5 inch speed quad frame, PETG HF	3	6.2	199.5
Total	3	6.2	199.5

Times and weights come from the Bambu Studio 02.08.02.61 slice at 0.20 mm layers. Each figure is rounded on its own.

In the room

Credits and licence

The wheelbase, the true X of 2306 motors on 16 mm holes, the 20 mm camera and the bolt-on arms follow "JeNo Fit 5"" by Hall of Frames (https://www.printables.com/model/1304727), a remix of "JeNo 5.1" by WE are FPV, nochamo and Jerome (https://github.com/WE-are-FPV/JeNo-5.1), both licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). The frame is my own design, and no geometry of either is used.