It may be possible that even from new, the disks themselves are reversed.I am getting fed up with adjusting my Avid BB7 disc brakes.
I set them just right, but within a few miles they are squeaking.
Seriously thinking of fitting rim brakes.
How do you know they are mounted correctly?Well, I have some spare rotors so I will try fitting them. The existing ones are true and on the correct way, the wheel bearings do not have any play, so it's down to either the pads or rotors, but I am fed up and this is positively (Basil Fawlty) their last chance!
I have seen that wrongly made too. The Chinese workers make many mistakes!I know that they are mounted correctly because they have a direction arrow on them.
Anyway, I have changed the front disc and will give it a test.
Rim brakes have improved immensely since the 1950s when we had to put up with the dire 'Fibrax' blocks.
It would be interesting to see an example of a correct and an incorrect fitted rotor if you have access to any, also explaining the reasons as I have always just gone off the arrows too.I have seen that wrongly made too. The Chinese workers make many mistakes!
Please make me a quick photo, as I can tell from the way the holes are aligned, and it might help you further.
I will go off how mine are on my bike and hope they are correct.I have devised a small test for any of you interested, as to how and why so many bike brake disks are incorrectly orientated for optimum and correct usage. Possibly to cause vibration and squealing when used.
Further more, though I have not tested this out (HOW?), but common sense tells me that a squealing brake probably does not stop as well as a quiet(er) one of the same type etc. does, under emergency situations!
And as the vibration will most likely affect the contact area negatively and further extra heating will be possible!
Remember the rule of physics that braking is independent of contact area, provided one ignores the heating effects.
PS.The force due to friction is generally independent of the contact area between the two surfaces. This means that even if you have two heavy objects of the same mass, where one is half as long and twice as high as the other one, they still experience the same frictional force when you drag them over the ground.
The force of friction comes from the surface characteristics of materials that come into contact. How does physics predict those characteristics theoretically? It doesn’t. Detailed knowledge of surfaces that come into contact is something people have to measure themselves (or they can check a...www.dummies.com
Many thanks for trying your luck, but many wrong answers, sadly!I will go off how mine are on my bike and hope they are correct.
1-C, 2-C, 3-C, 4-C, 5-W , 6-C, 7-I, 8-C, 9-C, 10-W
I have mentioned this problem to other bikers here in Germany, almost none of them believe or understand it either.hi new here looked at this and I come to exactly the same conclusion as awol. so I must be working on the same theory as awol .