Flying Videos PlayList

Not confidence enough hand lunch an rc plane. no worry ! OWL MDM-1 Fox has swappable between its landing gears and main wheel. Whenever you feel confidence enough to throw the plane than you just need to replace the landing gears with main wheel reducing about 150 grams of weight. 

If you do not have folding propeller yet, no need to worry also, just use a standard one. You still can fly it and later use the folding propeller when its ready (a 3D printed adapter is provided for this).

The wings is split into left and right wings convenience for transporting. The stands (front and back) for the plane are also provided. Whenever you want to store the plane, just detach the landing gears if you use them, and use the stands for the fuselage. The stand for the wings is also provided. 

Now, it is up to you… ready with hand launching !… prepare the plane in its flying position on your hand, push the throttle until you feel that the plane is about to leave your hand (about 80%) and just throw the plane. It flies like an eagle bird…

Folding propeller is already available to download

Adapter is provided if you have printed the fuselage with v1.0.


Spar Requirement :

OWL MDM-1 Fox uses 2 x “10mm OD – 1000mm Long” and 1 x “12mm OD – 500mm Long” Fiber Carbon Tube as Spar.

Since OWL MDM-1 Fox wing require fiber carbon spar, the Wing Parts can be printed with LW-PLA/ePLA-LW for saving more weight.

Center of Gravity (CoG) :

Use Gear Extension if Not Ready Hand Launching :

Weight and Time Estimation :

Following tables show the weight of printed parts, number of required filament rolls and time required to print. The numbers are taken from ideaMaker slicer calculation. From experience, actual numbers show about -5% less than depicted in the table. But the number may vary from printer to printer due to:

– Stepper Jerk value.

– Stepper Acceleration value.

– Steps per unit (either calibrated or uncalibrated)

– Extruder quality/condition.

– Nozzle quality/condition.

– Filament quality/condition.

– Etc. 

For sure the relative number are useful when deciding to accept the total strengths or weights when printing. Picking higher strength to some parts are necessary to avoid breaking during high impact landing or sharp maneuver for example.  

Here are the summary tables:

Free to download following Documents:

Table of Contents

Update History

Nose Heavy Correction  Available as an Option

Updated on April 26th, 2021.

5mm Horizontal Stabilizer Fiber Carbon Tube Available as an Option

Updated on October 19th, 2021.

Available to use folding propeller. If you have printed the plane, you just need to print the adapter to use folding propeller (no need to reprint the plane) 

Updated on November 3rd, 2021.

Recommended Setup

Tools and Materials

OWLplane Printers (for your ref.)

See figures below some printers used, created, developed and modified by OWLplane. Two group printers are set, the first one is utilized only for printing PLA/PLA+ and the other one is utilized to print with ABS, ASA and HIPS filaments (the one with enclosures). Just hover onto the figures to find more information about them.

Modified all Bowden setup printers into Direct Drive but leave Tevo Tornado and Anycubic Mega as is (still in bowden setup).

Hardware Needed

For Fuselage and Canopy:

For Wings (except the control surfaces):

For Aileron, Flap, Stabilizer, Rudder and Elevator Servos:

*) Illustration only

Setup for Servo Travel/Throw

Suggested setup for medium travel/thrown are depicted below and you may adjust the setup according to your need.

3D Printed Motor Mount, Propeller Spinner, Collet and Spar

Motor Mount Requirement

Motor mount wall should be 3D printed with more heat resistance filaments such as ABS, ASA or HIPS. If your 3D printer does not have enclosure you may want to try with PETG filament (more heat resistance than PLA/PLA+). In case you still would like to use PLA, please do annealing process (not sure can do for standard PLA), some successful with HT-PLA/Hight Temp-PLA. Click here for you to read about annealing article.

Motor Mount
Propeller Spinner and Collet Requirement

OWLplane does not provide STL file for printed propeller spinner due to our concern about strength, shape and uniform weight when spinning at high speed. Not all 3D Printer has really free of skew issues for all their axes. The skew issue generates uneven shape that will lead to problem when spinning. Good spinner should be available in your local hobby store or online store, even that spinner, you still need to balance it before using it.

OWL MDM-1 Fox Spinner and Collet Requirement :

1. 70mm Diameter Size Spinner or 50mm Folding Propeller Spinner.

2. 5mm or 4mm Shaft Propeller Collet (check your purchased motor shaft to pick the right size propeller collet).

Please watch the following Videos to balance your Propeller and Spinner:

Assembly Figures

MDM-1 Fox Fuselage Assembly

MDM-1 Fox Wing Assembly

MDM-1 Fox HStab Assembly

MDM-1 Fox VStab Assembly

MDM-1 Fox Canopy Assembly

Watch OWL MDM-1 Fox Animation and Assembly Video
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