Hi, I’ve had a Wahoo Kickr Core for around a year now. It’s my second unit since the first got fried by the static charge issue but the replacement has been fine so far. I’m using a 9spd 2002 Specialized Stumpjumper mountain bike with the trainer and it had been working well until the last couple of months when I started noticing a low vibration through the pedals when riding in the highest gears. Shifting works fine. The vibration stops when I change down into lower gears so it seems to be related to the force applied through the pedals. I have replaced the cassette, chain, bottom bracket, rear mech and even the pedals but the issue remains.
The noise/vibration is so bad the neighbours have complained when I train late in the evening which they did not do before. I’ve taken the case off the core and the belt seems tight, does not rub on the inside of the case, there are no noises coming from the flywheel and the cassette is tight.
Anyone with a similar problem?