Yokosuka K5Y1 Model Airplane Yokosuka K5Y1 "Willow"
1933 Japanese Navy Trainer
In 1933 the Japanese Imperial Navy developed a standard intermediate trainer, the Type 93, to be built by several major aircraft manufacturers in Japan. Around the same time the Army had a very similar trainer produced to their requirements, the Type 95. The Navy version was originally a land based aircraft but one version (K5Y2) was equipped with two floats and went into service at seaplane bases. Power was supplied by a 300 hp, air cooled 9-cylinder Hitachi Amakaze 11 radial engine.
Yokosuka K5Y1 Willow Model Airplane
Over the years various manufacturers produced a total of 5589 of both types, but only one remains today. It is exhibited at the Indonesian Air Force Museum in Jakarta.
Kenji Majima in Nara, Japan, has recently completed a full-size reproduction for museum exhibition purpose. Pictures in the kit.s instruction manual show some construction detail of this aircraft.

The float version was developed with increased fin area and a stronger engine. Also the fuselage is different with more rearward placing of the rear float strut attachment point.
Specifications
Wing span2200 mm Length1640 mm
Weight5700 g - 7000 g Wing area110.8 dm2
Wing loading52 - 63 g/dm2 Engine 2-stroke10 - 13 cm3
Engine 4-stroke15 - 20 cm3 R/C set4-channel

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