Front brakes dragging - Chicagoland Sportbikes
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post #1 of 20 (permalink) Old 07-08-2011, 10:03 AM Thread Starter
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Front brakes dragging

is this normal? When I spin the wheel I can hear the pads dragging on the rotors. Is it time to disassemble the calipers and clean?

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post #2 of 20 (permalink) Old 07-08-2011, 10:06 AM
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Yes it is normal but only to a point. if you can't spin the wheel one revolution when you spin it then yeah thats bad.
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post #3 of 20 (permalink) Old 07-08-2011, 10:08 AM Thread Starter
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Quote:
Originally Posted by Uncle Steve View Post
Yes it is normal but only to a point. if you can't spin the wheel one revolution when you spin it then yeah thats bad.
ok then its not that bad

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post #4 of 20 (permalink) Old 07-08-2011, 01:48 PM

 
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What Steve said. You'll always have just a little drag. With EBC pads I used to get 1-2 turns on the 600RR. Vesrah pads seem to drag a little less. Anything less then 1 full turn is to much!

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post #5 of 20 (permalink) Old 07-08-2011, 06:24 PM
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clean the brake dust out of your calipers...once it builds up then then the wheel won't spin as much.

That's why you see good AMA teams clean their calipers everyday....attention to detail and reduces that little bit of drag.

Also, spin the wheel and make sure you don't have a really slightly bent rotor dragging i one spot...that happens all the time as well.

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post #6 of 20 (permalink) Old 07-08-2011, 09:26 PM
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^ here it is

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post #7 of 20 (permalink) Old 07-08-2011, 09:35 PM

 
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It is always time to clean. When in doubt, clean it out.
Quote:
Originally Posted by Derick View Post
is this normal? When I spin the wheel I can hear the pads dragging on the rotors. Is it time to disassemble the calipers and clean?

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post #8 of 20 (permalink) Old 07-09-2011, 12:41 AM

 
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You may also want to check wheel bearings for drag or slop.

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post #9 of 20 (permalink) Old 07-10-2011, 03:54 PM Thread Starter
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Quote:
Originally Posted by Safety First View Post
clean the brake dust out of your calipers...once it builds up then then the wheel won't spin as much.

Also, spin the wheel and make sure you don't have a really slightly bent rotor dragging i one spot...that happens all the time as well.
how do I clean the dust out?

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post #10 of 20 (permalink) Old 07-10-2011, 05:05 PM
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1). Pull the caliper off the fork (one at a time).

2). Remove the pad pins and pads. Keep track of which pad is which. You will want to re-install them in the same orientation.

3). Use the brake lever to push out the pistons a bit farther than the dust rings showing on the sides of the pistons, but not all the way out.

4). Dip a Q-Tip in new, clean brake fluid and use that to remove dust and clean the pistons. I also clean the parts of the caliper near the pistons.

5). Push pistons all the way back in (watch your reservoir so that it doesn't overflow).

6) Re-install pads and pad pins. This is a good time to check the pins for grooves and other gunk and clean them as well so that the pads slide smoothly across the pins. Torque pin bolts to spec. I usually use a drop of locktite on them as well.

7). re-install caliper on fork and torque to spec, also using a drop of locktite. If your caliper and pin bolts are safety wired, you can forget the locktite.

Now do the other caliper.

When all is back together, REMEMBER TO PUMP UP THE BRAKES! Squeeze the brake lever repeatedly until the brakes are firm and solid. Bleed if necessary at that point.

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Last edited by beac83; 07-10-2011 at 07:11 PM.
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post #11 of 20 (permalink) Old 07-10-2011, 05:17 PM Thread Starter
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Thanks craig

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post #12 of 20 (permalink) Old 07-10-2011, 07:39 PM
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brake cleaner with a toothbrush, Q-Tips, etc.

Soap and water with the following above as well.

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post #13 of 20 (permalink) Old 07-16-2011, 10:18 PM Thread Starter
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So I had a chance to clean them. I noticed that not all the pistons move equally. One of them doesn't seem to move at all until the other 3 are fully extended. Is it time to fully disassemble and clean these? I still get about a turn and a half out of the wheel

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post #14 of 20 (permalink) Old 07-16-2011, 11:22 PM
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^^^^ there is no back pressure thats why they are not all coming out at same time

go time traveler style and go back in time, fuck his grandma, then shoot forward in time and then fuck his mom. Then return back to present state and call him a the product of two incest whores and hes your son and show video of you plowing the both members of his family. .
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post #15 of 20 (permalink) Old 07-16-2011, 11:37 PM Thread Starter
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Quote:
Originally Posted by C2M View Post
^^^^ there is no back pressure thats why they are not all coming out at same time
What's that mean?

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post #16 of 20 (permalink) Old 07-16-2011, 11:44 PM
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Quote:
Originally Posted by Derick View Post
What's that mean?
Back pressure meaning you have none pressing back on the pistons

go time traveler style and go back in time, fuck his grandma, then shoot forward in time and then fuck his mom. Then return back to present state and call him a the product of two incest whores and hes your son and show video of you plowing the both members of his family. .
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post #17 of 20 (permalink) Old 07-16-2011, 11:49 PM Thread Starter
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Quote:
Originally Posted by C2M View Post
Back pressure meaning you have none pressing back on the pistons
Is this normal?

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post #18 of 20 (permalink) Old 07-17-2011, 09:20 AM
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That's how my calipers are on the track bike. I think it's normal. They even did that after a total rebuild a while back.

On the track I don't experience any symptoms of problems, such as pads wearing unevenly or anything.

Turn and a Half is good for nice, tight brakes.

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post #19 of 20 (permalink) Old 07-17-2011, 01:17 PM
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I have never seen a caliper where all the pistons moved out equally when pumping them up.

Many times my pads seem tight when I put in new pads or re-assemble the front wheel, but as soon as they heat cycle, the wheels spins nice and free.

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post #20 of 20 (permalink) Old 07-17-2011, 04:59 PM
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Quote:
Originally Posted by Derick View Post
Is this normal?
See above mine even do it

go time traveler style and go back in time, fuck his grandma, then shoot forward in time and then fuck his mom. Then return back to present state and call him a the product of two incest whores and hes your son and show video of you plowing the both members of his family. .
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