Loose pads. BB7

[Brizn]

Anyone ever have trouble with their brake shoes "clicking" w/ bigger rotors??

I went from a 160 to a 185 rotor up front a few wks ago.. and shortly thereafter noticed a small *click* sound when I applied the brakes after longer, brakeless stretches. *Clicks* only happened upon 'initial' applications, not upon subsequent applications..

So I've isolated the issue-- thx Punga! There's ~ a mm of space on either side (forward/rear) of the brakes pads.. and when I grab, the rotor throws them up against the forward part of the caliper, *click* . There's no subsequent *click* bc the pads stay put in their forward position.. Until I ride for a while without grabbing.. and they jiggle loose/ back to a more centered position.. cocked and ready to *click* next time I grab.

I don't think they've "developed play"; new calipers have the same spacing- and the same caliper/pads never made this noise with the 160. I'm assuming the larger rotor/ stronger throw has something to do with it...? It doesn't have any noticeable effects on performance.. but it's definitely unnerving to me.

Does anyone have thoughts on this?

[tuba_transport]

My rear calipers started making a clicking sound a couple of weeks ago. I finally figured out that one of the pistons was sticking. It would catch and then snap free during every lever squeeze. When it finally released it would make the click sound as it smacked the pad against the rotor.

I pulled the pads out and blew out as much dust as I could with an air hose. Then I dropped a drop or two of triflow on each piston so it would reach the seals. Finally used the air hose to blow out as much excess triflow as possible to ensure none would reach the pads when I reinstalled them.

My click went away and my back rotor also stopped dragging. I was adjusting the shims in that darn caliper after every freakin ride for weeks until the click started and I then did the piston lubricating.

May not be your cause, but it worked out on my end.

[Brizn]

yea, well.. hm.. the piston (singular, a la BB7) travels freely.. When I grab, the rotor pulls the pads forward a mm causing them to slap up against the inside of the caliper, where they seat.

Not really much i can do about it, i guess..

[tuba_transport]

yea, well.. hm.. the piston (singular, a la BB7) travels freely.. When I grab, the rotor pulls the pads forward a mm causing them to slap up against the inside of the caliper, where they seat.

Not really much i can do about it, i guess..

'I may have not been too clear on what my clicking sound was. When I pulled the lever, pressure would build up in the cable until it over came the stickiness of the piston in the caliper. It would break loose violently enough to cause it to smack the rotor and click.

Usually, even when grabbing levers as fast as humanly possible, the pads are much more gradually pressed into the rotor and no noise is heard. With my sticky piston it was more of a pop instead of a gradual squeeze.

Either way, this might not be your issue at all. I was just trying to clear up any lack of communication I conveyed in my previous explanation.

[Brizn]

just trying to clear upGotcha. I understand it now. That's some serious stiction.

I fooled with the pad spring for a while.. trying it the other-side up, tweaking it little bits, etc etc. Then I decided to just pop the spring in from another caliper I'm not using.. and I didn't notice the *click* once on this evening's ride..

The pads definitely have some wiggle room in there..