Kyosho aiRium is a series of micro-sized, three-channel, scale electric RTF foam model aircraft designed, built and sold by the Kyosho Corporation of Tokyo, Japan. They are distributed in North America by Kyosho America of Lake Forest, California.
The models boast a high level of scale detail in keeping with Kyosho's long-standing tradition. One model, that of the Piper Cub J-3, features multiple-piece simulated Continental cylinders, valve covers and exhaust pipes protruding from either side of the motor cowl.
All versions include preinstalled Kyosho KS-21 five-gram servos, a Kyosho Sky Victory brushless motor and matching 10-amp ESC. The "Readyset VE29" versions of the product line include a Kyosho KT-21 four-channel 2.4GHz transmitter and three-channel receiver.
No flight battery is included; Kyosho recommends the use of a 450mAh two-cell lithium polymer packwhich the factory claims will give flights of approximately twelve minutes. Four AA-cell batteries are required for the transmitter of the Readyset versions.
As of October 2011, the product lineup is as follows:
- Cessna 182 Skylane, plane only and Readyset, available in red or blue
- Messerschmitt Bf-109E, plane only and Readyset
- Supermarine Spitfire, plane only and Readyset
- Piper J-3 Cub, Readyset only