The integrated high-performance fan optimally cools the motors of the B40-Competition. The running noise is also minimised by asymmetrically arranged air outlet holes. The external housing design with milled cooling grooves offers perfect heat dissipation with minimum weight.
The B40-Competition motors are equipped with segmented high-performance rotors made of optimised magnetic material.
The B40-Competition has larger ball bearings than its predecessor, the Hacker B40. This significantly reduces friction and optimises longevity. In addition, a stronger inner shaft with a diameter of 5 mm prevents vibrations at extreme speeds. The front and rear end shields are bolted together. The shaft is fitted with an integrated pinion. The increased power output of the B40-Competition motors is ensured by a high-performance gearbox with a 6 mm shaft. Speed Controller 70-80
The B40-9S Comp + 6.7:1 Kv 4690 is used in sporty F3J, F5J, F3B, F3F and comparable models with 3S LiPo.
