The Nakajima Ki-43 Hayabusa was better known under the US code name Oscar. Based on the Japanese experience in Manchuria, the army and its pilots wanted a super agile killer as a replacement for the Ki-27 Nate that had a fixed landing gear and open cockpit. The result was this airplane that became the Imperial Japanese Army main fighter during the first half of the WWII in the Pacific theatre.
The Hayabusa was often mistaken for an Mitsubishi A6M Zeke/Zero. Very light airframe, light armament, not much armor, nor self-sealing fuel tanks, but very agile and excellent turning rate due to its automatic flaps system. The 2nd generation, as the Ki-43 II, was much improved and was built in large numbers.
For more details on the development and history:
- https://en.wikipedia.org/wiki/Nakajima_Ki-43_Hayabusa
- https://www.youtube.com/watch?v=1FzA1aHHipk
- https://www.youtube.com/watch?v=p_6wahcOvqs
Check here to get a test file that will allow you to validate your ability to print and build this 900mm rendition of the Hayabusa:
https://cults3d.com/en/3d-model/gadget/ki-43-ii-hayabusa-oscar-wwii-fighter-600mm-l3d-test-print
Check out the RCGroup discussion for more information or to ask questions:
https://www.rcgroups.com/forums/showthread.php?4300383-Ki-43-II-Hayabusa-Oscar-WWII-fighter-600-800mm-%28L3D%29
This 900mm wingspan rendition of the Ki-43 II is powered by a 4108 with 600Kv for optimum performance and is designed to be printed in LW-PLA, with several key parts in PLA+, like the forward fuselages sections, inboard wings sections, motor mount, spinner, servo and battery tray. The design has carefully planned internal structures for LW-PLA slicing resulting in clean parts with minimal oozing. Major slicer support is provided to quickly print clean parts.
Like with my recent designs, multiple versions are planned, including an 800mm wingspan version aimed at the BR2208/2212 outrunners or a 2507 drone motor, followed by a 1100mm version with retracts. Check out my product page for more information on those upcoming versions. These instructions will focus on the 900mm rendition.
Included with this file:
• Factory files for Simplify3D v4 (TBD)
• Cura 4.13.1 3MF files
• Valid STL files for all components
UPDATES: TBD
FLIGHT VIDEO:
600mm prototype 1st flight on 2023-03-27: https://youtu.be/mjFT7oreDuo
Print time: XXhrs
Print weight: XXgLW-PLA, XXg PLA
RTF AUW: 900g with 4x3.7g servos, 4108 600Kv, 6S 1300mAh, 9x6 prop.
REQUIRED COMPONENTS:
X1 4108 600Kv Motor (or equivalent in 3S)
X1 20-30A ESC handling 6S
X1 1300MAH 6S LIPO
X3 9G Micro Servo (X4 if installing working rudder)
X1 4ch+ Micro Receiver
X1 6mm carbon rod (750mm wing joiner)
X1 3mm carbon rod (300mm stab joiner)
X6 1.5mm carbon rod (fuselage stiffeners)
X1 1.5mm Music Wire (pushrods and elevator torque rods)
X4 6x2mm Magnets (cylinder shape)
X4 M3x10mm screws (fix the motor mount to firewall)
CA Hinge Sheet
Velcro (sticky back)
Some extra 1.75mm PLA filament (locating pins and possibly the fuselage stiffeners)
OPTIONS
- Parts are provided to install a functional rudder.
Check out my growing collections of 1:12 Air Combat warbirds:
https://cults3d.com/en/design-collections/GonzoTheGreat/l3d-r-c-1-12-air-combat