CRJ - 900/700 Airliner
This is a 3D printed CRJ-900/700 I designed to be easy to assemble and fly on two 70mm EDFs. Build Volume required is 200x200x200. RTF weight: 3,300g (PLA 2x 4s 2200mah) Wingspan: 1.5m Length: 2m Print time: 120hrs 2kg of PLA I have a full step by step assemble video on my YouTube channel. Watch below. Keep scrolling to see more features of the CRJ-900.
$65.00USD
Specifications:
Wingspan: 1.5m Print time: 120hrs
Length: 2m PLA: 2kg
RTF weight: 3,300 grams 6 Channel or more
2x 70mm EDFs 2x 60amp ESCs
Build Video
This is my build tutorial for the CRJ-900/700. I ended up creating the 900 version, and went with a Mesa Airlines livery because this is the model of plane I flew when I worked for them. The plane can easily be converted to a CRJ-700 simply by leaving the F3 piece out during assembly.
Designed to be easy to assemble
The fuselage pieces are reinforced for strength with the addition of a 15mm ring. I also added a slotted key in each fuselage piece which makes for an easy to align and assemble fuselage section. I also wanted to make this build as accessible as possible, so I designed the servo brackets to be used in any orientation so you can use a 6 channel receiver. The flaps make for realistic take offs and landings.
Getting Started
This plane requires a minimum build plate volume of 200x200x200.
My favorite work-horse printer, that I have printed many airplanes with and have run for 1,000+ hours is this one! Check out my Amazon Shop to get a shopping list of items you'll need for this plane.
Optimizing Engines and Thrust
I originally designed this plane with 64mm EDFs, they required full power to get off the runway during the maiden flight with not much extra power. It flew very slow and very scale. It is preferred to have some excess power for RCs and maiden flights so the plane flies more efficiently, and gets off the runway sooner. So I added an 70mm EDF option to the files. You can still use the 64mm EDFs for this build if you would like to, especially if you are printing the LW-PLA version. If you are using regular PLA, I would recommend using 70mm EDFs.
Retractable Landing Gear
I have included a complete build list for this plane in the description of my YouTube video, it can also be found at the bottom of this page. I originally 3D printed these landing gear but they did not hold up to my rough takeoff surface. They were built to be standard size, so they are easily exchanged for aluminum landing gear.
You're ready to build!
Thank you for deciding to build the CRJ-900! It is an awesome plane, I know you are going to have fun with it.
Make sure you check out my Build Tutorial, in the description you will find a complete parts list for building and assembly.
Happy printing! See you on the next build.