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  1. #1
    Save Jesus
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    Nov 2005
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    Preventing sticky pistons?

    This seems to be a common problem with hydraulic brakes, and seems to be caused by dirt getting stuck between the piston and caliper body.

    So I was thinking, how about something like a very thin and flexible concave disk that fits between the piston and brake pad. The diameter of this disk would be larger than the piston. Wouldn't this act like a shield that keeps dirt out of the junction?

  2. #2
    Singapore
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    something like a glove? and the caliper is the "wrist"? and the piston as the "finger"?

  3. #3
    mtbr member
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    just like any other disc/caliper setup out there .. you have to do PM to them every so often... pull caliper, pull pads, squeeze pistons out a bit, clean with toothbrush (i use purple power as my cleaner), wash off with water, blow dry, push pistons back in,, put pads back in, go ride..... this is how i do it for all my vehicles....(bikes,motorcycles,cars etc)

  4. #4
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    Quote Originally Posted by qkenuf4u
    just like any other disc/caliper setup out there .. you have to do PM to them every so often... pull caliper, pull pads, squeeze pistons out a bit, clean with toothbrush (i use purple power as my cleaner), wash off with water, blow dry, push pistons back in,, put pads back in, go ride..... this is how i do it for all my vehicles....(bikes,motorcycles,cars etc)


    Just do this every time you change your pads, and you won't have sticky pistons.
    Lead by my Lefty............... right down the trail, no brakes.

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