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MINI Extra 300 Model Description, Specifications, and Parts List

Updated: Jul 18, 2022


Length: 392 millimeters

Width: 462 millimeters

Weight: under 250 grams ready to fly with battery. No FAA registration required!

Maximum printer build plate:

All components were designed to be printed on a Creality Ender 3 Pro printer bed size of 220 x 220 x 250 max.


Fully symmetrical NACA 11015 modified to 115% thickness

Printer Filament: Lightweight PLA is a must! Of the ones I've tried ColorFabb is the clear winner. In my experience the flow rate can be dialed far further back creating a lighter part, the color prints better, and the filament simply prints cleaner than others. I liked it so much I stocked up on it. You can purchase it here: Hurry before I use it all up.


Brushless 4000 KV Drone motor with mount holes of 20mm. Think Diatone Mamba 1404 or this one from Amazon:


I designed this model around a Tattu 450 MAH 4S drone battery.

See Amazon Link: Tattu 4s 450 MAH Lipo.


Brushless 10 to 12 amp depending on capacity of your motor. The following link is what I used on the prototype:

Amazon Link:

Receiver: Micro receiver. The prototype used this:

Amazon Link:

Servos: You will need 3 sg90 mini servos.

Amazon Link:


You will need (2) 1.6 x 12 mm hex head screws for the axles.

You will need(4) 1.6mm x 5mm hex head screws to mount the custom pushrods.

you will need a small spool of Kevlar thread or alternately Upholstery thread.

You will need (3) 1mm dia. Carbon Fiber Rods.

Complete Parts Kit:

We are in the process of compiling all the stuff to make this easier. We will get back to you on this. very soon.

Conclusion: That is it for the specifications! Check the main blog here for the next steps. Feel free to reach out to us with any questions. We will attempt to clarify the construction blog including your input as much as possible. Also please check out or new community forum. Feel free to post pics, ask questions, or help others.

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