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Anyone ever seen a disc brake pad spring become damaged?

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Anyone ever seen a disc brake pad spring become damaged?

Old 01-27-19, 08:21 PM
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PatrickGSR94
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Anyone ever seen a disc brake pad spring become damaged?

I have Avid BB7's with over 6,000 miles on the original pads. Riding home this afternoon, I suddenly heard the rear wheel start making noise. I could tell it was coming from the rear brake caliper, so I pulled the wheel, caliper, and pulled the pads and spring out. I found a chunk missing from one of the pads, and part of the pad retention spring was mangled and worn away. I suppose it was caused by the brake pads getting pretty thin? Guess it's finally time to replace these pads! I've been putting it off for awhile. Although I'm surprised it happened on the rear brake before the front brake, since this is my e-bike which weighs around 65 pounds, and I use the front brake much more than the rear brake.
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Old 01-28-19, 12:28 PM
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Lbs ftw

A new spring comes with every new pad set.. ask @ Your LBS to save some that outlasted the pads, to have spares..


BB7 is a commonly installed caliper so they would be servicing many, there..
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Old 01-29-19, 11:54 AM
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Originally Posted by PatrickGSR94 View Post
Although I'm surprised it happened on the rear brake before the front brake, since this is my e-bike which weighs around 65 pounds, and I use the front brake much more than the rear brake.
No surprise there, especially if you often ride in dirty conditions - the rear brake does get hit by dirt much more than the front one.
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Old 01-29-19, 12:07 PM
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Now you realize the importance of doing a periodic safety check, and remove and inspect the pads is part of that ..
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Old 01-30-19, 08:15 AM
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Originally Posted by fietsbob View Post
Now you realize the importance of doing a periodic safety check, and remove and inspect the pads is part of that ..
This is my first disc brake bicycle, so yeah I'll be checking them more often. I had no idea how long the original pads would last.
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Old 01-30-19, 08:37 AM
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I think Sram recommends that you change pads when the backer plus pad is 3mm. That is pretty thin, I have pads on my fatbike with sram hydros that I have been closely monitoring. I have them down to 3.12mm so they still stop fine but are using a lot of lever. I would have changed them out a long time ago but I am enjoying the experiment to see how long they will go.

But it yes the rear can go pretty quickly due to the increased amount of dirt, dust and debris that is kicked up by the rear wheel which grinds the pads more quickly.

i would also check the rotor, it should be fine but since you stated a chunk of pad came loose just make sure it did not do any damage.
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Old 01-30-19, 10:35 AM
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A comparison between surface area of disc pads and drum brake shoes gives a suggestion of why 1 is so much shorter wearing than the other...

But now , as you can see multiple companies want a slice of the disc brake market S-A has the drum brake hub market to themselves..





....
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Old 01-30-19, 03:18 PM
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Yeah I did check the rotors already because I was worried about damage, but I did not see anything out of the ordinary.
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