Free plans for Seven UP

During the lockdown I had time to design a pylon racer based on a model called Petit Chelem. I have redesigned the plane to be 3D printed and wanted to use a very thin wing profile to increase speed.

I bring you a pylon racer optimized for LW PLA. It is very light and quite strong, very easy to print on a 3D printer of a minimum of 300x300x300mm (Sidewinder X1, CR-10, ...). Two versions of tail, fixed or removable.

Two versions of fuselage, with or without landing gears (only change part 1 of fuselage).

SPECIFICATIONS:

• Wingspan: 1014mm
• Length: 782mm
• Est. weight: 600g (without battery)
• CG: 63mm
• Airfoil: MH-33

Fuselage and wings are optimized for print with LW PLA
Cowl is recommended to print with ABS, better withstands heat
Servo covers could be made with ABS or PLA, not recommended with LW PLA (very soft)
Version with landing gear I recomment to print with ABS or PLA/Nylon with Carbon Fiber, little more flexible and stronger.

Also you need:
1 CF tube 6mm x 780mm
1 CF rod 3mm x 780mm
2 steel rods 1,5 or 2mm x 100mm (aileron)
1 steel rod 1 or 1,2mm x 600mm (elevator)
1 M4 nut
1 M4 20mm screw to fix the wings
2 M3 nuts
2 M3 6-8mm screws to fix de cowl
2 wing servos (preferably 10mm maximum thickness)
1 elevator mini servo
1 brushless motor up to 28mm
1 brushless Esc (Amp. depends on the motor power)
1 battery 1600-2200mah 3S or more

Option landing gear:
1 mini servo to drive (only insert into the socket and fix with 2 screws)
2 nuts M3 an 2 screwws M3 to fix rear
3 wheels 25-35mm (nose wheel max. width 10mm)
3 M2 screws and 3 M2 nuts to fix wheels

CONFIGURATION:
Brushless XPower XB2825/6 RACER SPECIAL 3400KV
ESC ZTW Mantis 65A with BEC
Battery Turnigy Graphene Panther 2200mAh 3S 75C
Servo Corona DS-843MG for wings and Servo EMAX ES08MD for elevator
Propeller APC Electric 4,75 x 5,5

Landing gear:
1 servo Turnigy TGY-9018MG
3 wheels 25mm x 9,75mm

Print Settings
Printer:
Artillery Sidewinder X1

Resolution:
0,25

Infill:
5%-10%

Filament_brand:
Colorfab

Filament_color:
white

Filament_material:
LW PLA

Notes:
Each piece has its configuration, the fuselage has more flow 55% and the wings less 40%. Common: Temperature is 240ºC Heated bed 60ºC Noddle: 0,4mm Speed: 30mm/s Print settings for fuselage: Resolution: 0,25 Extrusion: 0,55 Infill: 5% — 10% (make stronger) Print settings for wings: Resolution: 0,25 Extrusion: 0,40 Infill: 5% — 10% (make stronger) (Simplify3D) Include solid diagragm every 200 layers