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Hey, I just got a new specialized disc 2008. I picked it up in May (around the 15th or so), and now we are nearing the end of June. My father just bought a shwin hybrid bike for him to ride around in the park with and I tried it out and I went flying!!! his pad brakes were wayyy more responsive than my disc brakes. I am trying to remember how responsive they were when I first bought the bike but sadly I cannot remember. I know i eventually have to get the bike readjusted b/c I know my cables will stretch out and all, do u think that time has come to get that done? I have to squeeze pretty hard to stop at stop signs when I'm only going around 10mph on a flat surface, and I def have to squeeze harder than I used to. My brakes also stopped making that buzzing noise when I used them (I think they had to break in). If anybody can help that would awesome, thanks!
 

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clean the rotor like the above said .. and check out the pads ... if they are to thin ... replace em .. if they look glazed over ... sand them a bit (on a smooth flat surface) ... and / or bake them in an oven for a little bit to remove any other oils and such that may be in them ...

i think there may be a chemical for prepping them .. but i normally just clean mine up ... and if i know they got any kind of lube on em and such ... bake them to get it out.
 

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If they are mechanical brakes, they likely have just one piston that moves, and the opposing pad is stationary. As they wear, the stationary pad gets further and further away from the disc, causing the disc to bend and loose grip. It was simple to adjust the stationary pad one my MX- 2s, once I realized what was happening, and they performed better than when new.
 
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