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Why ibicycle brakes whistle? The whistle is generated by the friction between the skate and the bike wheel. On this page we will see how to solve the problem of noisy brakes and their adjustment.
Among the frequently asked questions typed on search engines by novice cyclists we find the three wordsbicycle brakes whistle ornoisy bike brakes.This is a very common and easy to resolve issue.
Why are bicycle brakes whistling?
THEbrake padsof thebikethey do not whistle because they are worn out, it often happens that they start whistling following a replacement: with the disassembly of the old bearings and the assembly of the new ones we go toget highadjusting the brakes and so we begin to perceive that annoying hiss. The problem can also occur after making the hole in the inner tube of the bike, after having brought the tires to pressure or after replacing the entire wheel ... that is, all procedures that can impact (directly or indirectly) on the bearing position of brakes.
Let's go back to the original question, then why are bike brakes whistling?
The sound that we associate with a whistle is linked to the vibrations generated by the friction that is created improperly between the skate and the rim of the bike.
To be exact, vibrations are created when the rear end of the brake first touches the rim of the front one.
If the two bearings are well adjusted, the contact with the rim is simultaneous so no vibration is generated and the braking system works properly.
Thev-brake, in particular, it is equipped with an articulated waist that allows the adjustment of the brake pad angle.
Noisy bike brakes, how to do it
How to adjust the brakes to avoid that annoying whistle?
When adjusting, make sure that the two pads touch the wheel simultaneously or that the front part touches the rim first. With the adjustment, act on the angle of the skate by touching first the front part (make it protrude by one or 2 millimeters) and then the rear. This way the brakes will no longer be noisy.
Noisy bike brakes even when not braking
If brake noise is generated when braking, this is normal. If the brakes whistle even when you are not using them, then there are two hypotheses:
- the brakes are badly adjusted
- the wheel rim is crooked
In case of a deformed rim
Turn yours over bicycle(place it on the saddle and the handlebars). Now look at the wheel rim, spin it and look at it from every angle, does it seem slightly deformed? In this case it will appear that the wheel is skidding more or less markedly based on the extent of the deformation. In this case, when the rim turns, in the area where it is deformed, it hits the brake pad, generating the noise. In this case the rim must be replaced.
If the rim swerves only slightly, it may also be that it has been mounted incorrectly, in this case it will be enough to center it better.
To increase the visibility of your bike using the rims, we advise you to mount a LED device right on the wheel; to understand what we are talking about, see the photos on the page:led lights for the bike wheel.
In case of badly adjusted brakes
If the brakes are noisy even when you are not braking, the problem is not related to the inclination of the pads as explained above. The problem concerns more extensively the entire position of the braking system. To better adjust the bike brakes, please follow the instructions shown in the following video.
In the photo above:
on the Adriatic cycle path that connects Puglia to Trieste, at Giulianova in technobike.