Carbon fibre foldable quadcopter

BigX is a bespoke vehicle designed and built to support research projects. It’s big, with a 900mm wheelbase which means it can hold up to 21in propellers.


The frame is manufactured by SoliDrone, the model of the frame is FR4X 900F. I got this prototype frame in order to build it and test it. The company will start selling this great frame soon, so, check their website for updates. They have a beautiful render that you can see here:



Specifications of the vehicle:

Frame: FR4X 900F
Motors: Foxtech S5010 288kv
Propellers: 18×6.5in CF
Wheebase: 900mm
FC: Pixhack
ESCs: Hobbywing XRotor Pro 40A
Weight(no batt): 3kg


The carbon fibre plates are really thick, 3mm, which makes it very very hard and solid… SoliDrone, hehe… But that is one of the reasons why is a bit heavy. But considering the type of applications this one is going to be use in, it is just right. It’s big, 900mm wheelbase, and because of that, it can be equipped with very large propellers, but being foldable, makes it very easy to transport. This is a great feature.


Building process:


So, how big it is??


Weight with 16,000mah battery
Weight with 16,000mah battery

At the moment I’m putting 18in props to this one, and its performing quite well, maybe I will put bigger props on the future.

Hovering time:

I did several tests using two different batteries. Both  batteries are Multistar LiHV from HobbyKing. The longest flight was almost 32 minutes.

Battery Flight Time
10,000 mah 25 min
16,000 mah 32 min

Then I added a Raspberry Pi and using DronePilot, I made it fly autonomously in very different ways, and it performs great!! You can see in the video how good it flies. And as usual, the Scottish weather does not help, but this vehicle was able to fly under raining conditions and strong wind gusts, with ease.



7 thoughts on “BigX

  1. You actually make it seem really easy with your presentation however I in finding this
    matter to be really one thing which I think I might never understand.
    It kind of feels too complicated and extremely broad for me.
    I am having a look forward to your next put up, I will try
    to get the hold of it! Escape roomy lista

Leave a Reply

Your email address will not be published. Required fields are marked *