The Variable Nozzle EDF 2 is a fully 3D-printed exhaust control system designed to enhance EDF (Electric Ducted Fan) performance through dynamic nozzle adjustment.
Powered by three MG90 metal-gear servos, the mechanism enables precise control over the exhaust geometry — allowing you to modify thrust, efficiency, and back pressure on the fly.
Whether you’re testing thrust dynamics, experimenting with propulsion efficiency, or building a custom RC jet, this system offers flexibility, durability, and precision.
Ideal for makers, RC enthusiasts, and aerospace learners looking to explore the science of variable exhaust flow.
Included in Your Download
Assembly
Instruction
Assembly
Instruction
Manual
Wiring
Diagram
Wiring
Diagram
Wiring
Diagram
Nozzle Convergence Mechanism
3D Printer Required
220*220*250 mm
Side View
Back view
3S Battery performance test
With converging nozzle
Without converging nozzle
4S Battery performance test
With converging nozzle
Without converging nozzle
Weight 196 gm
Air Velocity Test
Servo Motor Driven
3 Servo Motors
MG90 Servo
3D Printable 70mm Updated Variable Nozzle Electric Ducted Fan .STL Files
This file contains all files required to print your 70mm Updated Variable Nozzle Electric Ducted Fan at home.
Total Printing Volume of all 9 Files: 83,304 mm³
This file contains 9 .STL files i.e.
70mmm EDF Propeller
Casing
EDF Holder
Nozzle Holder
Nozzle Link New
Nozzle
Servo Holder
Servo link
Slider
The Variable Nozzle EDF is distributed into the parts mentioned above so that you can easily print any part at your home with your own DIY 3D printer of minimal size i.e. 220(mm)x220(mm)x250(mm).
In case of any doubt, please use the Contact Us page.
Thank You.
Parts Included in the STL File
Curious how it works? Catch the full video here
Recommended Electronics
| ITEM | DETAILS | QUANTITY |
|---|---|---|
| Motor (any 1) | Racerstar 2500Kv link / DYS Sunfun 2500Kv link / Samguk 2500Kv link | 1 |
| ESC (any 1) | Hobbywing 40A link / Readytosky 40A link / BLHeli 35A/45A link | 1 |
| Servo Motor | SG90 180° link | 3 |
| Buck Converter | LM2596 link | 1 |
| Battery (any 1) | 4S Tattu 14.8V 3300mAh 60C link / 3S Tattu 11.1V 1300mAh 75C link | 1 |
| Servo Tester | Servo Tester link | 1 |
| Battery Charger (any 1) | Sky RC B6 Neo link / Imax B6 Balance link / Imax B3 Pro (2S 3S) link | 1 |
Necessary Accessories
| ITEM | DETAILS | QUANTITY |
|---|---|---|
| 3D Printer | 220×220×250 mm build volume | 1 |
| Nuts and Bolts | M2.5 / M3 sizes (various lengths) | — |
| Accessories | Silicon wires / Cable zip ties / Heat shrink tube / Soldering iron | — |
| Motor |
Racerstar 2500 Kv Motor link DYS Sunfun 2500 Kv Motor link Samguk 2500 Kv Motor link |
| ESC |
Hobbywing 40 amp ESC link Readytosky 40 amp link BLHeli 35A/45A ESC link |
| Servo Motor ×3 | SG90 180 Degree link |
| Buck Converter | LM 2596 link |
| Battery |
4S Tattu 14.8V 3300 mAh 60C link 3S Tattu 11.1V 1300 mAh 75C link |
| Servo Tester | Servo Tester link |
| Battery Charger |
Sky Rc B6 Neo Charger link Imax B6 Balance Charger link Imax B3 Pro Charger (2S 3S) link |
| 3D Printer | 220×220×250 mm build volume |
| Nuts and Bolts | M2.5 & M3 sizes (various lengths) |
| Accessories | Silicon wires, cable zip tie, heat shrink tube, soldering iron |
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