Well that’s one way to do it..

This home inventor actually made a drone so big that it can lift himself, and of course he used parts from other drones.  Here is a bit more on how he did it:

Props at 18 in were the largest I could find with contra rotating pitches and so defines much of the layout. Also the fine pitch allows them to turn at high speed which reduces motor weight for a given power. Motor KV chosen to work with 4 cell batteries with 20% or so control margin. This low margin maximises the ESC efficiency, higher margin results in higher circulating current losses in the ESC and motor, reducing endurance.

Let’s watch him launch his drone in the video on page 2

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