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Message started by danjray on 08/05/13 at 10:16:03

Title: Front Brakes Rubbing
Post by danjray on 08/05/13 at 10:16:03

I've been riding my 2012 LS650 (boulevard although I feel weird calling it that in a savage forum :-[) for over a year now. This season the front brakes began rubbing, I brought it to the dealer to see if they could visually notice anything I didn't and they came to the same conclusion that nothing seemed wrong other than the audible noise it is making. He did suggest to replace the pads (which I did do) but the noise is still there.

Now the noise is seems to occur on only once per revolution, which I would figure comes from something being out of round, but when looking down the down tube while riding nothing appears out of round. It is a relatively quiet sound of just the pad rubbing on the disc and becomes the regular constant sound of stopping when pressure is applied during braking.

I've searched the forum without any luck finding a similar issue, but has anyone else experienced this, and if so are there any solutions? If not it's not the most annoying sound in the world, but it would be nice to fix it ;D

Title: Re: Front Brakes Rubbing
Post by Serowbot on 08/05/13 at 11:05:33

Some light contact of the pad with the rotor is normal...
That's just the way the brakes are designed...

Different brands of pads change the sound,... but there will always be a slight amount of contact...

Title: Re: Front Brakes Rubbing
Post by danjray on 08/05/13 at 11:08:37

darn, I was afraid of that, but I guess I can live with it haha

Title: Re: Front Brakes Rubbing
Post by verslagen1 on 08/05/13 at 11:46:13

Quote:

Now the noise is seems to occur on only once per revolution, which I would figure comes from something being out of round

Not outta round... warped, new pads won't do anything.
Not unusual, if it's only a tick per rev, ok
There is a spec in the manual somewhere if it bugs you.

Title: Re: Front Brakes Rubbing
Post by danjray on 08/05/13 at 11:55:27

If it is warped (which does make sense as I ride in all weather and could have hit a puddle with a hot disc) wouldn't I be able to see that by looking down the down tube while riding? Or do you think it could be slight enough to not be noticeable without actually measuring?

Title: Re: Front Brakes Rubbing
Post by justin_o_guy2 on 08/05/13 at 12:37:29

Get rolling about 20/25, pull in the clutch, LIGHTLY , as in one finger, pull the front brake. If you feel a pulse, your rotor is warped,, maybe not enough to matter, just make sure the caliper is floating easily on the pins,

Title: Re: Front Brakes Rubbing
Post by danjray on 08/06/13 at 05:21:55

I tried feeling for any pulse, I didn't feel anything. But like you guys have said, it's nothing terrible, I'll just have to live with it unless it gets worse. Just so I know, if it does get worse, is the only solution to get a new disc?

Title: Re: Front Brakes Rubbing
Post by WD on 08/06/13 at 06:08:58

No, if it it isn't too far gone it can be turned like a car rotor. And you may just have a single high spot from build up on the rotor or a pad. Pop the caliper off, take the pads out and sand them, staple the paper onto a piece of 1x4 or other scrap to prevent divots from your finger tips. Chuck up a 3M stripping wheel in your drill, scrub the disc rotor swept surfaces after pulling the rotor from the wheel.

I always scuff the rotor with 80 grit or a 3m wheel when installing new brake pads, helps them bed in easier and stay quieter.

Title: Re: Front Brakes Rubbing
Post by danjray on 08/06/13 at 06:31:10

Awesome! Thank you for the advice! I will try that out, because I do enjoy quiet brakes

Title: Re: Front Brakes Rubbing
Post by swedishbiker on 08/06/13 at 07:32:36

You can make some play between the caliper and pad, silver tape or thin sheet metal or similarly.

Title: Re: Front Brakes Rubbing
Post by danjray on 08/06/13 at 07:39:44

Between the caliper and pad? Wouldn't that push the pad further into the rotor?

Title: Re: Front Brakes Rubbing
Post by WD on 08/06/13 at 07:49:26

Brake shim aka squeal eliminator. You can get the same effect from grease on the back of the pads, dampens any sound transmitted through the pad.

Also, while the pads are out, file the lining's leading edge at a bit of an angle, air pressure will then help force them off of the rotor. You have to treat them like 1970s Ford truck brakes, they share a contact until rolling design. Once over 15 mph or so, air pressure should slightly lift them off the rotor.

Title: Re: Front Brakes Rubbing
Post by danjray on 08/06/13 at 08:08:49

Huh, alright I follow you there, now that you say that it does seem like the sound goes away once I get up to speed, I always thought that other sound just drowned it out. I honestly don't like messing with the brakes whenever I don't need too, I'll live with the sound haha. Maybe if I'd been around in the '70s to mess with the Ford brakes I'd have an easier time messing with mine haha

Title: Re: Front Brakes Rubbing
Post by WD on 08/06/13 at 08:54:32

I learned that in the 80s, learned to drive in a 73 F100 (big block 360FE, C6 3 speed automatic). My 1985 F250HD cab and a half long bed used the same basic front brakes, as does my 1994 Ranger.

My "good" trucks and "good" car have 4 wheel drums. 1949 Dodge, 1969 Dodge and 1972 VW Super Beetle (same year as me).

Title: Re: Front Brakes Rubbing
Post by danjray on 08/06/13 at 09:40:57

Really? 4 Drums? I have an '04 Dakota with disc on front and drums on the rear, other than the brake dust I prefer the discs, any reason you say the drums are on your "good" vehicles?

Title: Re: Front Brakes Rubbing
Post by WD on 08/06/13 at 10:15:57

Because I prefer older vehicles. Ford trucks through 77, Dodge trucks through 71, General Mistake Corporation trucks through 72. Only have the VW because it was given to me years ago, I really prefer cars made before 1960. All three fossils still have points ignitions, so do the motorhome and the gasoline powered John Deere...

Inherited the Ranger as a commuter/work beater. Can't get my older fullsized trucks anywhere near its fuel economy.

My "good" project bike right now is a 1963 Honda Scrambler, kick only 4 speed with twin leading shoe drum brakes front and rear. Even still has points ignition.

I like old. My current favorite .22 rifle is a roughly 1914 Stevens M44 built with the 1895 tooling... and my "new" center fire revolver is from 1931.

Title: Re: Front Brakes Rubbing
Post by danjray on 08/06/13 at 10:31:05

Man you really do like the relics! That's an impressive collection though, I'm still on a college budget so antics are not quite in my collection, I've got a ruger 10/22 and a sig mosquito for my plinkers and a remington 870 and a sig p220 for my big boy guns ;D

Eventually I'll be getting some toys similar to yours, but that's a few years down the road...

Title: Re: Front Brakes Rubbing
Post by swedishbiker on 08/06/13 at 10:32:56

0211550 wrote:

Thats new stuff :)
My hunting rifle is a Rolling Block from 1871 :) but it got a new barrel some years ago, 45-70.

Title: Re: Front Brakes Rubbing
Post by justin_o_guy2 on 08/06/13 at 10:44:36

45-70,, If youve never done this & you can do it safely, take that gun out at night, get someone else to shoot it.. Have them sit in front of a car with the lites on, you stand behind, eyes shut. Soon as you hear it go off. open your eyes.. You can SEE the back end of that bullet as it goes away. I know that, cuz a buddy O mine showed it to me, you can do that in west texas. Thats a Big Fat Heavy slug..

Title: Re: Front Brakes Rubbing
Post by WD on 08/06/13 at 11:16:03

787D72766E7D651C0 wrote:

That's just a small fraction, most of it from long deceased relatives or ones so old they no longer use the guns, bikes or cages. Glad I have lots of storage space... 11 buildings counting the houses.

I'm broke, so, most of the toys are in various states of broken. ;)

Title: Re: Front Brakes Rubbing
Post by danjray on 08/06/13 at 11:32:47

Hey if you're not broke, then what the hell are you saving it for?