CRS3500 MKIII 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.

• 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 4,000 minutes (about 500 flights).

• Supports the common after-firewall installation of F3A, with optional Mount Kit. Also supports the before-firewall installation for stunt model aircrafts.

• We needed a system with more torque and stability to cope with larger propellers, strong wind environments and hot summer days.

• The new generation CRS MKIII system, in addition to the obvious color changes, has almost all the components redesigned: new main shafts, new gear & pulley, new motors, even the screws & support rods are new.

• Upgrade the main shaft bearing, rated dynamic load Cr(N) increased by 105% (2100N).

• The new belt and gear system improves dynamic load stability and is lighter than the previous generation.

• Newly designed lightweight propeller base, and the installation distance is increased by 2mm.

• The new motor has upgraded the magnet and magnetic circuit, and the torque is increased by about 10% (without increasing the current).

• Equipped with a new active cooling motor back cover.

• The motor power is increased by 500W, and the weight of the whole machine is increased by only 40g.

• Provides a wider range of torque variation, more uniform acceleration and deceleration characteristics.

• The accessories include CRS Spinner Kit (D82mm, white) & Mount Kit.