The NEO is a silent trainer, but in some cases you might hear sound that comes from the trainer. We will try to explain what it is
Around 35 km an hour it is possible that you hear a whistle sound. This is air moving through the disc and could cause some resonance. This is normal behavior
Cracking sounds when cycling
This can easily be solved with a with little maintenance. Please see the maintenance page. We advise you to grease the unit each year.
Also make sure that the cassette is tight enough. In many cases this is the problem
Metal sound when moving the disc
In case you her metal on metal sound when you cycle (coming from the disc), then contact support. We can offer you a solution for this.