Grinding Sound

A grinding sound is among the most commonly reported issues with Neo and Neo 2.

An example of the grinding sound commonly reported
Video Credit: Robert Zweistein

Root Cause

During shipping or rough handling, a very small particle of material from the printed circuit board may be dislodged. The particle then becomes trapped between the magnets and the coils.

As the disc spins, the particle hits the edges of the magnets as they pass. Because the metal disc of the Neo acts as a large speaker, the scratching sound of the particle against the magnets is amplified many times, creating the impression of a much larger object than it really is. This sound has been known to cause some Neo owners to panic. While it may sound like a box of wrenches crashing around inside the Neo, it’s actually a very tiny particle, often so small that it looks like dust when wiped with a clean cloth.

Steps to Resolve The Problem

  • Take a big, deep breath, and count to 100. While you may instinctively feel an urge to write an angry post on Facebook, the best thing to do is remain calm. As you will see, the problem is very small, very easy to resolve, and once cleared, your Neo will be perfect.
  • Make a video similar to the one included in this article, and send it as an attachment to support@tacx.com
  • Tacx support will reply within 2 business days, and generally they will ship you a disc extractor to remove the Neo disc.
  • While you are awaiting your disc extractor, you can absolutely ride your Neo, so you won’t be missing any workouts. Neo will provide all the resistance you’re expecting, and most of the time, the grinding noise will disappear during one hard session, as the particle is swept free of the magnet.
  • Once the extractor arrives, follow the directions in the Tacx video below, and in fewer than 5 minutes, your Neo will be noise free.
The official disc removal and inspection video by Tacx. Bonus porno music.
An example of the type and size of the particles that are responsible for the Neo grinding noise, approximately the diameter of a fingerprint ridge.
Photo Credit: Mark Middleton

Additional Information

For additional information, please see the video below by Shane “GPLama” Miller, who had a similar experience with his Neo, and like many, was unable to locate the source of the problem, even though the problem was resolved. The particle really is that small!

Shane Miller goes into detail about removing and maintaining the Neo disc
Updated on October 17, 2019

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Comments

  1. Did neo 2T change in design so that the extractor doesn’t work? I have a 2T with grinding noise. Paid so much money in shipping so I can get an extractor overnight to find that the hole in the extractor is smaller than neo 2t axle. I’m very disappointed. It’s been 3 days with a brand Neo that I haven’t ridden yet.

    1. Hi Gurk,
      Yes, the Neo 2T has a wider axle to allow for native thru axle support. There is a new version of the disc extractor, and that is the one that you need. We have opined previously that the new extractor, which is blue in color, should be the ONLY one that Tacx manufactures, as it will fit both Neo and Neo 2T. However, it is not available for purchase through Tacx or Garmin. They will provide it for you free of charge if you open a support case. I appreciate that you wanted to take the initiative, but it would have been better to ask us first and we would have pointed you in the right direction. Hopefully you can return it for a refund. Optionally (and we have done this ourselves), you can carefully drill the extractor you have. We used an 11/16ths drill bit, but others have used a dremel to ream the inside so that it fits on the axle.

  2. As much as I’m disappointed to have this happen on my brand new 2T, I have to give kudos to Garmin support. I was able to chat with them on a Saturday and they set up an order for the disc extractor to be delivered on Tuesday. Well done Garmin/Tacx.

  3. My Tacx Flux S is squeaking. I assume that the belts need to be changed. Where do we buy the belts?
    My equipment is 2.5 years old.

  4. Hello There,

    The new Neo Bike has just been received and is not yet in use, when there is a grinding sound. NEO2T, I know what to do, and I have that tool. But I need your guidance for disassembling the flywheel position of the Neo Bike.

  5. Hello There,
    The new Neo Bike has just been received and is not yet in use, when there is a grinding sound. NEO2T, I know what to do, and I have that tool. But I need your guidance for disassembling the flywheel position of the Neo Bike.

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