Hello,

This idea is awesome. I had a similar idea for a 3 inch more square like but using a similar arme frame plate concept. (however I can't do 3d designs ... ).
Your idea would enable freestyle people to have a super strong frame but still very light and with a very good CG.

Do you think it would be possible to improve this design by having at least 3 screws per motor, adding a X in the middle of the arme plate, and by beefing up a bit the arms?
Do you think it would be possible to make a similar frame with an X shape and not stretched X?
Even if the frame would weight 50-60 grams with the mods it would be such an awesome frame for freestyle and race.

It's pretty cool tho.. 😅 😃 Some small changes and it would be perfect! 😎

I'm glad you showed this fail ... It makes me feel Not quite so alone in trying to figure out some of this drone stuff

Love the ambition, lil sad it didn't end up a good flyer, but i'm sure the experience was awesome. I know the tooth fairy is a good design, and I wouldn't blame you for choosing that. I hope you refine your frame untill it's what you want. Flying your own frame is SO much cooler/more satisfying than building out a frame someone else designed. Also: your camera mount with the vtx antenna AND the cap all together looks good, AND it's an effecient use of space! CF tubes for arms do present some mounting challenges, but you could get the weight/low drag that you want. I'm not gonna beat the dead horse about the fiber orientation and cut direction, as I see several comments already (but that might be all you need).

4inch as a nimble rocket than speed machine? sorry this would be very diffrent, but im 4"lover and would be very intressted on a flight footage on 4" and your impression about
thanks for post this build

If from Armattan, you'd have to rotate the DWG by 45d and add "along put weave" to the file name. They'd cut fiber orientation correctly that way. It does add cost, but very surprised cncmadness didn't just do it for you by default.

Q: What was the cost compared to Armattan's quote?

Problem with very-thin arms with low Width/Thickness ratio is they deflect a lot when torqued like a screwdriver shaft. Tubular arms don't have this issue; Hyperlow Vert's use a crossbrace to mitigate. Not sure what the width of a Hyperlite is, but that's probably as low as one should go.

This design is really cool! You might try simply cutting the carbon fiber along the arms for more strength and rigidity. I know I'll never ever buy another frame that doesn't do this - they break about 4x easier (ask me how I know ;)