MINI Extra 300 Model Description, Specifications, and Parts List
Updated: Aug 26
Specifications:
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.
Airfoil:
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.
The following links are Amazon affiliate links to products we have actually used in this model. The links do not affect price of the products but they do pay us a small commission fee on them that helps with the cost of developing these models.
Product Links:
Some of these links are Amazon affiliate links. These are always of products we used and design the model around. There is no increase of price to you for using these links but the small commission we earn helps to offset the cost of hosting this site and developing models. It is greatly appreciated.
Powerplant:
Brushless 4000 KV Drone motor with mount holes of 20mm. Think Diatone Mamba 1404 or this one from Amazon that we have used as an alternative: https://amzn.to/45nPIPf
Battery:
I designed this model around a Tattu 450 MAH 4S drone battery. I've actually used
Tattu batteries for quite a few models and have been very happy.
Amazon Link: https://amzn.to/445ihjz
Radio: I have come to prefer multi protocol radios and this one is the best in my opinion. This one is my latest muse, the Radiomaster AT 1011.
Amazon Link: https://amzn.to/3s6e7KU
ESC:
Brushless 10 to 12 amp depending on capacity of your motor. The following link is what I used on the prototype: Amazon Link: https://amzn.to/3KyO3OM
Receiver: Micro receiver. I have used the Lichifit 4 channel micro receiver, but honestly I can't keep up with this model without a flight controller so I end up using:
The Radiolink Byme A mini flight computer along with:
The Flysky FS A8S micro receiver.
Amazon Link: https://amzn.to/3QyjRao
Semme RC Receiver Amazon Link: https://amzn.to/3s42uEi
Radiolink BymeA Amazon Link: https://amzn.to/47vzl51
Servos: You will need 3 sg90 mini servos. Amazon Link: https://amzn.to/47pIsEt
Hardware:
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.
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.