Ever since I pulled off on the GS with the disc lock still on (http://www.gstwins.com/forum/viewtopic.php?t=20587&highlight), I have noticed a scraping noise on my front rotor.
It comes and goes. I hear it more when I am going slowly or braking at a slow speed. It usually goes away after i tap the front brake once and keep on riding. I've visually inspected it and don't see any obvious damage. Should I just replace it anyways? What do front rotors run costwise?
Any advice you gots, give me!
What do you mean by "scraping noise"? The "normal" noise is a kind of cross between "sshhhhhh" and the metallic tone that lingers after you ring a bell. Maybe you're just now noticing it because you're hypersensitive to the rotor area?
For year-old prices on front rotors, go almost to the bottom of my Brake Parts & Prices (http://www.bbburma.net/Documents/GS500_Brake_Parts.txt) page.
its a dull scraping noise... very similar to "sssssshhhhh', but its definitely more pronounced at times than before i pulled off.
I'm 99% sure that there is no immediate danger of adverse damage to the wheel or brakes because the rotor looks like normal.... but I wouldn't be surprised if there wasn't a minute amount of warp from starting off with the disc lock still in.... I did bend the 'tooth' on the disc lock, after all.
here's a test.
Take a trip for 3-4miles [preferable out in the middle of no where] and don't use the brake. When you get down to first gear to come to a stop let it roll to a stop. Get off the bike and feel the rotors. If you have excessive heat on either one then you will need to do some tweaking/fixing.
First check the tire alignment [mostly applies to rear rotor]
Pull the caliper and see if something is lodged in there. Pull the pads too and see if they are glazed over....replace if nessecary....Then check the rotor to see if it's glazed. If everything is good then also get a tourque wrench and double/triple check that each rotor bolt is tourqued down to 30lf/lbs. If they are uneven the rotor could possible be tilted and rubbing on the pads creating that sound. Usually over time [3-5k miles or so] they pads/rotors will glaze over.....you will notice a dramatic increase in stopping distance.
For cost a new rotor is about $320 front $120 Rear. There are a couble of rotors for sale from used lots floating around on e-bay. Just ask the thickness of the rotor to see/tell if it's any good. Here in MD the state limit is .20 .....brand spanking new rotors usually are in the range of .36-.38...It's also possible that your rotor might be warped causing it rub on one side more than the other creating your shhhhhhshhh noise.
I am going to try your method today to see how bad it is. I rode again last night, and the rotors are definitely also making noises at times when I don't use the brake.
Guess i should get ready to post in the wanted section. Is there a way to fix rotors, or should I just spring for a new one?
You rotor prolly has a warp in it. Not too bad ... its a floater ... you may be able to spot where its out and where its in and knock the out part in and the in part out with a mallet. Or like take it off and set it hat part down on a flat table and see where its off ... then knock that in ... if its too bad, you'd need a new rotor and hat, cos usually the hat or pins will be the bad parts. The center offset part is the hat (just my nick name).
Cool.
Srinath.
I just got back from meeting with a fellow GSTWINer (danno (http://www.gstwins.com/forum/profile.php?mode=viewprofile&u=3589)). He took a look at my front rotor and agreed that it didn't look warped at all. He suggested that it just might be time for me to replace my front brake pads and that the disc lock incident (http://www.gstwins.com/forum/viewtopic.php?t=20587&highlight) might have just been coincidental. Evidenced by the the fact that i have a shiny strip along the rotor.
Thinking about it, worn brake pads would exhibit the exact same symptopms that i've noticed. Going to see if the local Yamaha dealer is open today. Does anyone know what kind of pads I need to order? I guess i'll check one of my manuals
The front brake pads have been replaced. An initial spin around the cul-de-sac indicates that it might have solved the main problem. I still get a periodic 'sssshhh' sound, but MUCH less pronounced and much quieter.
As an aside... there doesn't seem to be much holding in that inner brake pad (smaller one adjacent the caliper). What keeps it from slipping out? Lack of space/proximity of the rotor?
Quote from: TarzanBoyThe front brake pads have been replaced. An initial spin around the cul-de-sac indicates that it might have solved the main problem. I still get a periodic 'sssshhh' sound, but MUCH less pronounced and much quieter.
That's good, but the pads are probably not fully "bedded in" yet. Keep us posted....
Quote from: TarzanBoythere doesn't seem to be much holding in that inner brake pad (smaller one adjacent the caliper). What keeps it from slipping out? Lack of space/proximity of the rotor?
As I recall, you tuck the "loose end" behind a kind of tab on the caliper body when you reassemble things. But I know what you're saying - it looks like it ought to fall out just by looking at it.
Quote from: TarzanBoyThe front brake pads have been replaced. An initial spin around the cul-de-sac indicates that it might have solved the main problem. I still get a periodic 'sssshhh' sound, but MUCH less pronounced and much quieter.
As an aside... there doesn't seem to be much holding in that inner brake pad (smaller one adjacent the caliper). What keeps it from slipping out? Lack of space/proximity of the rotor?
Its held in there by faith and good fortune ... :lol: :lol: :lol:
Yea lack of space to go anywhere ... but that dont mean its not come loose ... usually when crap is bent or wore out ... I opened the 2 bolts one time and it fell out ... just needed that extra 1/2 mm to run away ...
Cool.
Srinath.
Quote from: TarzanBoyThe front brake pads have been replaced. An initial spin around the cul-de-sac indicates that it might have solved the main problem. I still get a periodic 'sssshhh' sound, but MUCH less pronounced and much quieter.
As an aside... there doesn't seem to be much holding in that inner brake pad (smaller one adjacent the caliper). What keeps it from slipping out? Lack of space/proximity of the rotor?
what the heck.. did you sell my old gs and buy something else? brakepads were new man! unless that disc lock did something to them? We are talking about the front brake right?
Quote from: cheesyQuote from: TarzanBoyThe front brake pads have been replaced. An initial spin around the cul-de-sac indicates that it might have solved the main problem. I still get a periodic 'sssshhh' sound, but MUCH less pronounced and much quieter.
As an aside... there doesn't seem to be much holding in that inner brake pad (smaller one adjacent the caliper). What keeps it from slipping out? Lack of space/proximity of the rotor?
what the heck.. did you sell my old gs and buy something else? brakepads were new man! unless that disc lock did something to them? We are talking about the front brake right?
Welcome to my world ... People constantly buy stuff from me, try to fix a problem that doesn't exist or is un fixable, start swapping stuff around (or more like the dodo did last week ... take spark plugs out and scrape them on the ground to clean them ... :x ) and then its worse than before ... and now somehow its my fault and they did nothing wrong ... :x ...
Cool.
Srinath.