Features:

• All new FAI F3A competition-level contra rotating system.
• Nearly zero propeller reverse torque makes the straightness of the model plane better.
• The thrust is about 20% higher than the uniaxial systems (compared with DA4). And with lower power consumption.
• The incredible uniform speed effect can be achieved in the descent/dive route.
• Power comes from a specially developed 3000 High-RPM outrunner motor.
• CNC made pulley and inclined gears, quiet operation.
• CNC made lightweight gearbox bracket.
• The main shaft and the motor shaft adopt hollow shaft design.
• Carefully deployed gear / belt ratio eliminates the belt tight wheel mechanism.
• Maintenance-free design without adding lubricating oil.
• Belt replacement cycle is 4000 minutes (about 500 flights).
• Supports the common after-firewall installation of F3A, with optinal Mount Kit. Also supports the before-firewall installation for stunt model aircrafts.

Dualsky Advanced Power Systems produces high quality RC accessories and components. Since 2004, Dualsky has concentrated on Brushless Outrunner Motors, Electronic Speed Controllers, and long lasting LiPo Battery Packs. Their products have been known to produce competition performance with little cost.