Maintenance & Technical > KX450F / KX250F

Rotor / brake pad issue?

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Danger4u2:
Most average riders,  I'm not talking racers, want the fastest-quickest bike they can make or buy.  They will hop on a bike and take off like a bat out of hell.  The first time they check the brakes is when they need them.  That can be "to late" in a critical situation, on a trail with a cliff, shear drop off in the dunes..........
When I take off on a bike the first thing I check is how well the brakes work.
When changing pads I always flush the system with new fluid.  I change my fluid at the least once a year.  Also, keep your opened bottle of brake fluid inside your house where it's climate controlled.  When I get done using it I cut a piece of baggie and put over the top of the bottle then put the cap on.  Brake fluid attracts moisture,  that's detrimental to your brake system.  I buy the bottle that fits the job I'm doing.  In other words don't buy the big bottle because it's a better buy as far as ounces to dollars.  Buy the small bottle so you don't have it sitting around forever, absorbing moisture.

Friar-Tuck:
  True Dat!
"hygroscopic material (literally "water seeking") is one that readily absorbs water (usually from the atmosphere)."

 The brake fluid literally attracts moisture from the atmosphere, when you put this in your brake system it will
 1. lower the boiling point of fluid. (usually as soon as you need the brakes the most!)
 2.  the water can collect in the low spots of the system and start rust formations.
    More than you really cared to know... :lol: 

BDI:
Sounds like the system is over full with oil. The buttons on a floating disc are not supposed to be loose but they get that way from heavy useage. When the rotor gets hot it expands and floats on the buttons. When it cools down it should be snug again.

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