Are new brake pads supposed to leave a stain on clean cloth?

Det87
Det87 Posts: 10
edited October 2017 in Road general
I have a few pairs of the Shimano J04Cs, which seem to be well received (http://www.jensonusa.com/Shimano-J04C-M ... Brake-Pads).

However, my problem is constant contamination after about 2 rides, which weirdly almost comes off with only hot water and bit of brushing. Anyway, the pads never seem "clean". They will _invariably_ leave a dark stain on a clean cloth.

I also tried with a brand new pair straight from the package, and same thing.

Is this normal?

Comments

  • sungod
    sungod Posts: 17,376
    the 'dark stain' will be a combination of finely ground brake pad and finely ground metal from the rim, plus some random dust from the road
    my bike - faster than god's and twice as shiny
  • darkhairedlord
    darkhairedlord Posts: 7,180
    I blame wiggle, obviously not cleaning the pads before sending them out.
    You should demand that they send someone to your house to clean the bike and dirty cloth immediately or you will post about it on their social media feed.
  • frisbee
    frisbee Posts: 691
    sungod wrote:
    the 'dark stain' will be a combination of finely ground brake pad and finely ground metal from the rim, plus some random dust from the road

    That would be impressive, they are disk pads. My theory is dried blood from a pro cyclist!

    Its just brake dust, the same as you get with car brakes.
  • Matthewfalle
    Matthewfalle Posts: 17,380
    frisbee wrote:
    sungod wrote:
    the 'dark stain' will be a combination of finely ground brake pad and finely ground metal from the rim, plus some random dust from the road

    That would be impressive, they are disk pads. My theory is dried blood from a pro cyclist!

    Its just brake dust, the same as you get with car brakes.

    Why would there be Pro athletes blood on them? Would this not make them really difficult to make and also lose Shimano the vegan cyclist market?
    Postby team47b » Sun Jun 28, 2015 11:53 am

    De Sisti wrote:
    This is one of the silliest threads I've come across. :lol:

    Recognition at last Matthew, well done!, a justified honour :D
    smithy21 wrote:

    He's right you know.
  • sungod
    sungod Posts: 17,376
    frisbee wrote:
    sungod wrote:
    the 'dark stain' will be a combination of finely ground brake pad and finely ground metal from the rim, plus some random dust from the road

    That would be impressive, they are disk pads. My theory is dried blood from a pro cyclist!

    Its just brake dust, the same as you get with car brakes.

    ahhh, disks, didn't consider that, no place on a road bike :)
    my bike - faster than god's and twice as shiny

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