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Nakajima Ki-43
Hayabusa (Oscar)

Nakajima Ki-43 Hayabusa (Oscar)

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Nakajima Ha-115
1,150 hp
4,210 lbs.
6,450 lbs.
2 x 12.7 mm
2 x 550 lbs.
29' 3"
35' 7"
275 mph
330 mph
3,240 fpm
1,100 miles

Only 40 Nakajima Ki-43 Hayabusa fighters (Allied code name Oscar) had been deployed to the Malay Peninsula at the start of WW II. They were assigned to escort duties for bombers on missions over Hong Kong and Burma.

Nakajima Ki-43 aircraft were a match for early World War II Allied fighters.

The Japanese Navy Zero is better known than the Nakajima Ki-43, while being only slightly faster. In fact, the Ki-43 could out turn and had a better initial climb rate than the Zero.

Initial shortcomings of the Nakajima Ki-43 Hayabusa were its lack of armor protection for the pilot and fuel tanks, plus the aircraft being equipped with only two 12.7 mm machine guns. Later models had a more powerful engine, armor, and self sealing fuel tanks. One version was even produced with clipped wings.

Eventually over 5,900 Nakajima Ki-43 Hayabusa aircraft of all types were built. They were the most numerous fighters used by the Japanese Army during World War II. Only the Japanese Zero, used by their navy, was produced in greater numbers.

Nakajima Ki-43 Hayabusa
Nakajima Ki-43 Hayabusa - Alfa

In the photograph above is the Nakajima Ki-43 Hayabusa ARF from Alfa Model. It has a wingspan of 33 3/4" and a length of 29 1/2". A favorite motor for power is the MP Jet 28/7-35D.

The first picture below is of the Nakajima Ki-43 Hayabusa built from Timo Startkloff plans. The plans are available from VTH Online Shop. Specifications are 1:12 scale, with a wing span of 35.5" and a length of 29.5". It can be either motor or engine powered. All up weight is around 28 oz.

WarbirdKits.com has a short kit for sale of the Nakajima Ki-43 Hayabusa shown in the second picture below. Wingspan is 35.6" and length is 27.75". You will need a speed 400 size brushless motor for power. The model was designed by Tom Jacoby.

The last picture on this page is of the Nakajima Ki-43 Hayabusa that was scratch built by Grasshopper of RC Universe. It has a wing span of 48" and a length of 38". Power comes from a Norvell .25 engine. All up weight is 52 oz.

Nakajima Ki-43 Hayabusa
Nakajima Ki-43 Hayabusa - Starkloff

Nakajima Ki-43 Hayabusa
Nakajima Ki-43 Hayabusa - Warbirds

Nakajima Ki-43 Hayabusa
Nakajima Ki-43 Hayabusa - Grasshopper

Gus Morfis has Nakajima Ki-43 Hayabusa plans. They build to a 30" wingspan.

Cash RC from the WattFlyer RC reports that the Nakajima Ki-43 Hayabusa built from Timo Starkloff plans is easy to hand launch, turn, and fly. It is capable of nice axial rolls. He was impressed that the it could fly at very slow speeds without stalling. Cash uses an Electrifly 36-35-1000 motor.

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