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Rear brake caliper, Top or bottom?

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    Rear brake caliper, Top or bottom?

    I have a question, I always see newer bikes with the rear brake caliper mounted underneath the swingarm whereas our gs's have them on top. Is this a performance thing? or maybe its for clearance. I was thinking it maybe has some effect on the rear suspension during braking? Anybody really know? Im just curious.

    #2
    I never really noticed that on newer bikes. But then, I have GS tunnel vision. Maybe it has something to do with the center of gravity?

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      #3
      Originally posted by Tarbash 27 View Post
      I have a question, I always see newer bikes with the rear brake caliper mounted underneath the swingarm whereas our gs's have them on top. Is this a performance thing? or maybe its for clearance. I was thinking it maybe has some effect on the rear suspension during braking? Anybody really know? Im just curious.
      the cruiser type bikes(boulevards and shadows) have drum brakes in the back and i was told it was to keep the back wheel from locking up and hopping when hard braking.Who knows if that was true,I was talking to a salesman.the will say anything just to sell you a new bike!

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        #4
        I think, mainly for clearance.....moving the hanger to the bottom of the swing-arm is required even on the GS to enable use of a wider rim/tire combo.

        Tony.
        '82 GS1100E



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          #5
          position

          Fashion. Unless u have the brake arm attached to the frame its makes no differance. Harleys, all dirt bikes and others have them up top but sport bikes have them under for fashion as most of them just slide into a groove/slot on the swingarm. In the old days calipers where under neath and mounted to the frame by rod/rosejoints to help pull the rear of the bike down under brakes and help stop chatter on Katana/GS1000 race bikes

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            #6
            Might also notice where your bleeder screws are < they point up for a reason. When air gets into the calipers, it goes to the highest spot in the container (your caliper) Thus this is where engineers have put the bleeders. As to why the calipers are on the bottom of race bikes and modern sportbikes, lower weight mass. Puts it below the centerline of the gyroscope of the wheel.

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