actro-CL motors

The actro CL represents a new version of the actro Compact motor with a longer case. These motors offer higher torque than standard actro C types, enabling the use of larger propellers. This is especially interesting for powered gliders with an all-up weight of up to 3.5 kg and more, and power models weighing up to about 2.5 kg. actro CL motors are designed to be operated at power levels of up to about 350 W, offering high torque at speeds significantly below 10,000 rpm. Output powers of 600 W or more are possible with high-speed models and helicopters with rotational speeds around 10,000 rpm or over.

• External rotor (?out-runner?) motors designed specifically for direct drive
• Versatile mounting options: power take-off possible at both ends
• Low weight combined with extremely compact shape
• Mechanically and thermally robust
• Maximum efficiency around 88%
• Designed for 7 - 16 cells and propeller diameters up to about 16 inches.

As a result actro Compact motors form the ideal transitional series below the large actro motors. The particular advantage of these motors is the new mounting system, allowing them to be installed in models where a normal actro motor can be rather difficult to accommodate. Like conventional electric motors, actro Compact motors can simply be screwed to the model?s nose bulkhead by means of the motor?s front bearing plate. In this case power output is via the 5 mm Ø shaft. This makes it as easy to install the motor in a powered glider as any conventional motor. However, power can also be taken directly from the motor?s rotating case, i.e. from the rear end of the motor. Using this method the motor is installed like a normal actro unit, and the usual actro hubs can be used to accept the propeller.

actro CL 4 Order No. 7001/04

These motors are four-wind types, which makes them suitable for fairly high rotational speeds. As a result both units are a good choice for fairly fast model aircraft with propellers between 7 and 11 inches in diameter. The actro CL 4 is designed to be a direct-drive power plant for such models with 7 to 14 cells.

In contrast to the other actro C and CL motors the 4-wind variants can certainly cope with currents of 40 A and slightly above. Their higher speed and increased maximum current handling ability make both motors interesting options for small, high-powered model helicopters designed for motor speeds in the 15 - 20,000 rpm range. In this application the C 4 is suitable for use with 8 - 12 cells, the actro CL 4 for 8 - 16 cells.