How can I stop my hydraulic disc brakes from squeaking?

Is your bicycle new?  I usually share this video with customers who recently bought their bicycles with disc brakes. It shows the bed-in process to stop the squeaking noise on braking.

However, if you do not have a problem with your disc brake before, it is likely that the rotors and disc pads have been contaminated. It happens when you accidentally sprayed lubricant on the rotors or you may have ridden over puddles of water that may have oily residue in them. Watch this video to learn what other issues you maybe facing and how you can eradicate them.

Watch this if you really need to remove the disc pads and clean up the area where they are inserted.

Clattering sound when cycling?

If you hear a clattering sound when you are cycling but don't see anything stuck on your chainrings, that could cause the noise when you checked, it is likely the sound of your chain rubbing against your derailleur.

To verify if that is the cause, check where your gears are at when the noise starts.  Is your chain sitting on the larger chainring while the other end is sitting on the largest ring of your cassette?  If it is, look at your rear derailleur.  You will notice that it is stretched way forward.

If your chain is sitting on the smallest chainring while the other is sitting on the smallest ring of your cassette you will noticed that the rear derailleur is stretched way backward.  That means that you are cycling on extreme gear combinations and the grinding noise you hear is the chain rubbing against your rear derailleur.

This cross chaining process puts the chain at too much of an angle which adds tension and can cause your chain fall off the bike and wears it out faster than it should.

So now you know that you should avoid the following combinations:
Front gear is at 1 while back is at top gear
Front is at 3 while back is on lowest gears

Watch this video and you will have an idea of what I am talking about.