Hi all,
ok am wondering what the collective opinion is on this situation:
I have had my GS for about two months now. Within the first week of buying it i noticed that the front wheel made a slight scrapy noise that could be heard right upto 20mph. Well it didnt affect braking in anyway, so i let it be.
It still makes that scrapy noise after 2k miles. Braking power doesnt seem to have diminished at all. Just very good.
Well, this week i noticed that my rear wheel started making the same noise, only more scrapy!
Today i checked the rotors closely and they seem to be fine, no discernable warp or scratch. Just to see if they are ok, after a 10 mile ride, i touched the rotors and both were hot. The rear being hotter than the front. And i didnt even use the rear brake.... I noticed that if i pump the rear brake a little, the scrapy noise goes away for a while. Front brake noise is reduced only for the duration of holding in the brake lightly. Letting go brings back the scrapy sound. Front brake oil is fresh and Srinath himself did the job for me :-)
So, any line of investigation i should open up here? :(
Sri
double check to make sure your wheel is stright in relation to frame, IE both side adjusters are evenly adjusted. a cocked wheel will do the same thing.
duh...what is a cocked wheel?
Put the bike on the centerstand and spin the wheels. If they spin freely don't worry about it. The pads will contact the disks even when the brakes aren't applied. Jack up a car's wheel and spin the tire. You will hear the disks scraping too. It's the nature of disk brakes. Now if they are dragging and it doesn't spin freely you have a problem.
when you say spin freely, just how free should they rotate? ie: you give it a decent spin, how many revolutions are you to expect? I knnow thats difficult to answer but for instance, you give the wheel a spin and it goes through two rotations then comes to a stop, I guess that would signal something wrong?
Quote from: hehehemannwhen you say spin freely, just how free should they rotate? ie: you give it a decent spin, how many revolutions are you to expect? I knnow thats difficult to answer but for instance, you give the wheel a spin and it goes through two rotations then comes to a stop, I guess that would signal something wrong?
I've never counted the # of revolutions. Something like from several to half a dozen. You should be able to hear the noise, but not feel much resistance or dragging from the pads.
You'll be lucky if you can get the rear wheel to spin halfway around, what with the chain slowing it down. (Yes, even in neutral.)
So don't be discouraged by that; just try to feel whether the drag is excessive.
Quote from: srileoduh...what is a cocked wheel?
OK there are marks on either side of the swingarm where the axle goes through. There is also 2 plates with notches... the plate on the left and right should have the same or close enough number of marks on the swingarm in front of and behind the notch. AKA wheel alignment. When you take the wheel off, you have to re align it.
Cool.
Srinath.
Ok went and spinned the wheels. the front spins about 7-8 revolutions whereas the back spins about 1-2. doesnt seem to drag anywhere.
i'll investigate where "chicken notches" are on the swingarm.
thanks all!
sri