
Fixing my noisy Helios KWL
After running for over 9 years, 7/7 and 24/24, my Helios KWL EC 500 Pro started to make more and more noise. It was especially noticeable at night, even at a lower speed. Clearly, the motors were the culprits, and since they are brushless motors, the ball bearings were for sure at the end of …