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Working instructions Extra 300 – 3D Printable

:  RC Plans Poster

Christer Ornholt

Working instructions Extra 300 – 3D Printable

This RC model is designed to print in a regular desktop 3D printer.

CAD Designed and adapted for 3D print by

Download STL plans Extra 300 - here.

Wingspan: 1300 mm

Length: 1250 mm Weight empty: 1450 g (PLA)

Weight ready to fly (Depending on your equipment): 2550 g Wing area: 29.6 dm2

Servo: 5 pc Engine: your choice

Centre of Gravity: 90 mm to 105 mm from wing front edge.

For pushrod you can use carbon fiber rod 2/1 mm and music wire 1mm.

STL files includes in this download for a complete RC-plane. Printer settings depend on the printer. The settings I use may need to be adjusted to your requirements. Here Simplify 3D as slicers is used.

These settings apply with some exceptions. Cowl uses 2 Outline/Perimeter. Landing Gear uses 4 Outline/Perimeter and 50% infill. Motor Mount1 uses 2 Outline/Perimeter and 70% infill, Motor Mount2 uses 2 Outline/Perimeter and 25% infill. Rudder-horn and Wing-lock pc, Servo-box uses 2 Outline/Perimeter and 100% infill.

 

Wing:

The wing, right and left consists of 6 sections plus end cap. The wing is in fact not really symmetrical so be sure to mount it correctly. On the underside of the sections there is a mark "L" and "R" to help.

The wing is fitted with carbon fiber tubes 8 mm as reinforcement.

Tips: If needed, clear holes with a drill.

Wing section 1

Wing section 2.

Wing section 3.

Wing section 4.

Wing section 5.

Wing section 6.

End Cap 1.

Or End Cap 2.

Rudder:

Elevator:

Aileron:

Stabilizer:

Servo is mounted in the servo box in Wing section 2.

Rudder-horn

Hinge mont like this.

Wing lock:

You can choose to mount one or two wing locks on each side. Just glue the bottom surface.

Cowl:

Canopy:

Motor Mount:

Landing Gear:

Body:

The body consists of 16 sections. The body can be mounted with carbon fiber tubes 8 mm as reinforcement. However, this is a free choice as the strength is good without carbon fiber tubes.

Body Sections:

Remove marked surfaces with, for example, a hot knife or a soldering iron.

Fastener for Canopy:

Just glue the inside surface.

Mont Canopy:

Carbon fiber tubes 6 mm and 8 mm, Length 320 mm are mounted as attachments for wings.

Cut out the support surface and fit servo plate.

Canopy mount: 2 pieces 4 mm carbon fiber tube that holds the cnopy in place.

Mont: Rudder, Stabilizer, Elevator.

Mont Landing Gear:

And the Power after your choice:

And in the end, the aircraft should look something like this:

These files for this Extra 300 - 3D Printable are free to use for private individuals and for personal use.

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