3D LabPrint Piper J-3 Cub User manual

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Fully 3d printable
Piper J-3 Cub
User Guide
rev. 2 22/ 5

Piper J-3 Cub
fully printable R/C plane for your desktop 3Dprinter
Fully 3D printable RC model of the classic plane, specially designed as a cheap and easy to
build SuperStable RC model for everyday flying. Many scale details such as airframe plating
encourages to create realistic paint jobs. This plane has been designed for printing from
PolyLight 1. LW-PLA active foaming filament, that allow even the small printed planes to be
as light as any other RC plane building technique. Get ready for flying with this great per-
forming flying legend!
The first fully printable airplane files prepared for your 3Dprinter, with flight char-
acteristics, comparable or even supperior to classic build model airplane.
This is not a dream, now you can print this HI-TECH at home. Simply download and print the
whole plane or spare parts anytime you need just for a cost of filament only about $1 .
Extensive hi-tech 3d structural reinforcement making the model very
rigid while maintaining a lightweight airframe and exact airfoil even it’s just a plastic. This per-
fect and exact 3d structure is possible only thanks to additive 3dprinting technology. So wel-
come to the 21st century of model flying and be the first at your airfield.
Easy to assembly, you don’t need any extra tools or hardware, just glue printed parts
together and make pushrods for control surfaces. The rest of the assembly is very easy. Sim-
ply add brushless motor, ESC, servos and radio system. Don’t worry, detailed step by step
PDF/VIDEO is included. You’ll get a superb performing airplane with highly ecient power-
plant capable of flying 7+ minutes at full throttle and speeds exceeding 8 kph. Low stall
speed is achieved for easy landing on the other hand.
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General specifications:
Wingspan: 1 68 mm / 42. inch
Lenght: 675 mm / 26.6 inch
Height: 31 mm / 12.2 inch
Wing area: 18,15 dm2 / 1.94 square feet
Wing loading: 31 g/dm2 / 15.3 oz/square feet
Center of gravity: 44 mm / 1.73 inch from leading edge
Airfoil: LHK12 modified by 3DLabPrint
Print weight (LW PLA): 224 g / 7.9 oz
Empty weight (w/o battery): 38 g / 13.4 oz
Takeo weight (3s 13 lipo): 5 g / 17.63 oz
Max takeo weight: 7 g / 24.7 oz
Never exceed speed, VNE: 7 km/h / 5 mph
Design maneuvering speed, VA: 5 km/h / 31 mph
Stall speed, VS: 15 km/h / 9.4 mph
Recommended setup
Motor: Leopard LC283 98 KV (for 3S setup)
ESC: Turnigy 2 A / 3S or similar
Propeller: two blade GWS 8 x 4 (ugly orange)
Battery: LiPol 13 mAh / 3s
printed PET motor mount
Performance measurement
Max speed VH (level flight): 1 5 km/h – 56.7kn – 65.2mph with GWS 9x7,5
Rate of climb: 2 m/s (5 373 ft/min) with GWS 9x7,5
Flight time (3s 13 mAh/full): 7:3 with GWS 8x4

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Piper J-3 Cub
OThe Piper J-3 Cub is an American light aircraft that was built between 1938 and 1947 by
Piper Aircraft. The aircraft has a simple, lightweight design which gives it good low-speed
handling properties and short-field performance. The Cub is Piper Aircraft‘s most-produced
model, with nearly 2 , built in the United States. Its simplicity, aordability and popularity
invokes comparisons to the Ford Model T automobile.
The aircraft is a high-wing, strut-braced monoplane with a large-area rectangular wing. It is
most often powered by an air-cooled, flat-4 piston engine driving a fixed-pitch propeller. Its
fuselage is a welded steel frame covered in fabric, seating two people in tandem.
The Cub was designed as a trainer. It had great popularity in this role and as a general aviation
aircraft. Due to its performance, it was well suited for a variety of military uses such as
reconnaissance, liaison and ground control. It was produced in large numbers during World
War II as the L-4 Grasshopper. Many Cubs are still flying today. Cubs are highly prized as bush
aircraft.

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Included:
1. 3MF 3D files (primary)
Used instead of STL files
3mf files can be used instead of standard STL files, but also include information about slicing
in the new version of Prusa Slicer (since version 2.4). Open them directly in the Prusa Slicer
as a project or import to the slicer of your choice. The files contain settings for printing on a
direct drive printer with dimensions 2 x2 x2 mm, that can be further adapted to suit
your printer. The generic settings are compatible with Prusa MK2/3/3S printers.
2. Factory files for Simplify3D slicer
contains all the necessary settings to slice the models along with suggested bed layout. We‘re
using PRUSA i3 ORIGINAL printers so you may need to adjust the basic printing parameters
to match your printer or use these files as a start point for you.
3. Printing Guide in our Help Section
Apart from this userguide, please see the Printing Guide for PrusaSlicer,Simplify3D or Cura
to find some Tips and Advice for airplane printing (Thin Wall Printing).Remember: We use
retraction and .4- .5 flow with LW-PLA.
4. Gcodes
Basic Gcodes prepared for direct use, as universal as possible. Should work on i3 style
printers, Give it a try, but we can‘t guarantee it will work on your printer. Wall thickness
should be .55- .67mm.

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5. Scale markings PDF
You could print and cut the PDF in scale from thin self adhesive advertisement foil and place
it on the model as needed.

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Wing area: 18,15 dm2 / 1.94 square feet
Piper J-3 Cub
Center of Gravity
44 mm
Wingspan: 1 68 mm / 42. inch

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Lenght: 675 mm / 26.6 inch

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Step By Step PDF/VIDEO userguide
1.Choose airplane at www.3Dlabprint.com, visit our Facebook for latest info.
Basic requirments for A6M2 Zero are 2 /2 /195 mm
volume, nozzle .4mm recommended ( .35 or .5mm
alternativelly). Heated bed recommended. Designed to be
printed with Polylight LW-PLA filament by 3DLabPrint.
Contact: [email protected]
2. Create account, download
You will receive download link to all the zipped files to your
email right after the checkout (please check your spam folder
if not). If you are logged in with your account while purchasing
the model, you will find the download link in your account’s
Downloads section on our website. Please contact
[email protected] if you have trouble getting the files.
3. Prepare Gcodes
option A Gcodes:
if your printer is i3 comptatible you can use prepared gcodes directly. Just save them to the
SD card and let the 3d printer do it‘s job. HE temperature is set to 24 °C so the layers fuse
together well, you can adjust speed and temperature only through your printer‘s LCD. If these
Gcodes does not work for you, please proceed to the next options.

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option B Factory files Simplify3D:
We prepared all you need in these files (FFF process settings, parts layout on bed, etc...)
You can use these settings as a start point. Adjust according to your need (adapt for your
printer), print single parts and so on... Most 3d printers should work just with these settings,
but please go through the settings and amend if necessary, we are not liable for any damage
resulting from using our settings. If this still does not work for you, please proceed to the
next option.
option C Prusa Slicer 3mf files (recommended)
Please follow the guide in the Help section of our website about Prusa Slicer setup.
Drag and drop the 3mf file to the Prusa Slicer window and open it as a Project. It will create
a Generic 3DLabPrint printer, printing profile and materials. Please use these as a starting
point instead of your printer profiles provided by your printer manufacturer. Strong thin-
wall printing is a dierent discipline than printing Benchys what are the stock profiles usu-
ally optimized for. Once you tweak your profiles (retractions, etc.) you can easily switch the
profile everytime you open the 3mf file. All the slicing tweaks, such as added top/bottom
layers etc. are stored in the models below, so it won’t be overwritten.
Remember: We are using .5 multiplier and retraction with LW-PLA.
3MF