CarbonTube flies over 1hour

By XMFPV on Feb 03, 2024

13  0  9

This design's goal is to achieve 1 hour fly time, and after all I've reached 70min+ flytime with this build.
It is build from scratch with 3mm carbon tubes, that make the frame under 18g and rigid enough to freestyle. The second important part is the battery. I made a 5000mah 2s battery with 2 cellphone battery cell to get highest power density, because cellphone batteries have much higher discharging voltage and about 20% lighter than 21700 cells.
At last I flied this quad manually for 70 min because I don't want to add more weight install GPS.

Photos

Discussion

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wind_rapport   19 days ago  

wow efficiency has levels huh - very impressive

Rotorenpilot   20 days ago  

WoW, awesome rig. I like the tubular designs a lot and I'm working on some variations of the EyeFly collection at the moment. I was wondering if you had the 3D print files somewhere? I'd love to tinker with this concept.

Rice_Bowl   22 days ago  

I miss tubular frame designs. I used to think they had some potential especially when 3D printing was getting more common. Looks great my guy!

XMFPV   22 days ago 

Thanks, and I suppose tubular designs will get lots of advantages in long range FPV. There will be more tubular frames come out this year

Rice_Bowl   21 days ago 

actually yeah, their disadvantages lessen when you scale them up. Surprisingly common too for X class drones

Felias - eyefly   22 days ago  

So awesome to see more tubular designs! Great information about the pre-stressed tubes, i was not aware of that. I also do design tube-based frames for different purposes (eyeflydesigns.com). Are you on Discord by any chance? Would love to chat and share experiences.

XMFPV   22 days ago 
1

I'm a fan of your designs. Your frames with no CNC inspired me to build this quad. I just joined eyefly discord channel.

Martin Flite   25 days ago  

Great flight time!
Did you notice any disadvantages compared to a carbon plate frame? Vibration is a concern.

XMFPV   24 days ago 
1

I bent these 4 carbon tubes across FC. Pre-stressed tubes can reduce the resonance of the frame. For a extreme light weight design tubes can be more rigid than carbon plate frame. So I start another project to build carbon tube 8 inch LR frame.

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