u/Cocoj2001

Hi everyone,

I’ve been working on designing a custom Y4 frame for 2.5" to 3" props, with the ultimate goal of staying under the 250g limit.

Before sending the files to the CNC shop for carbon cutting, I would love to get some external feedback from the community to catch any potential design flaws or issues I might have missed.

Here are the specifications of the frame:

• Configuration: Y4 (Traditional split front arms, coaxial dual motors on a single rear arm).
• Motor-to-Motor Dimensions: 121mm width at the front / 124mm width at the rear.
• Carbon Thickness: 3mm for the arms, 2mm for the top-middle and bottom plates.
• Electronics Stack: Designed for 25.5 x 25.5mm AIO, with 25mm of vertical clearance.
• Motor Mount Pattern: 9x9mm (planning to use 1404 motors).
• Canopy: Still a work in progress, but it will be 3D printed in TPU to house the camera and video system.

I will be cutting this from T700 carbon fiber.

How does the geometry look to you guys? Any thoughts on the motor spacing, arms stiffness, or general layout for a micro Y4?

Thanks a lot for your help!