Brake Disc Loose.

[CB1ROCKET]

I believe this is not normal as my brake disc on the front offside is loose from the rivets holding it in place.

What do I do? Get a new disc or is it possible to get the disc re-rivetted?

:(

[Baph]

I wasn't aware they are riveted in place. Bolts yes, but rivets?

[CB1ROCKET]

the bolts are to bolt the disc to the wheel. The rivets are to hold the disc to the carrier.

Bahp: I thought you would knew it not a one piece disc??!

hehe

[jambo]

These are "Floating disks" the button connectors allow a little movement so that the braking surface can meet the pads exactly square on. A small amount of movement from side to side is normal, a large ammount is not, find a bike of equivelent age and see what they're like compared to yours.

[CB1ROCKET]

its moves from forth or arft, not side to side, weird

[Flamin_Squirrel]

These are "Floating disks" the button connectors allow a little movement so that the braking surface can meet the pads exactly square on. A small amount of movement from side to side is normal, a large ammount is not, find a bike of equivelent age and see what they're like compared to yours.

A doubt they are fully floating discs, that's a bling racing item. What the difference is in practice (and regard to this problem) I'm not sure however.

[CB1ROCKET]

the disc are flat, floating discs have an offset distance from the carrier, i stand to be corrected

[skint]

The carrier will usually be flanged but the disc will fit in line with the perimeter of the carrier.

these are floating discs...

http://www.stealthproducts.co.uk/products/gallery.php

They shouldn't move fore and aft whatever disc type you have as that would seem to defeat the object of the brake.

Sounds like they knackered or the fixings are. How old are they?. Never heard of that kind of problem. I have floating discs and although they move under load as others have said I doubt you could move them by hand.

If they are floating discs it could just be the fixings between disc and carrier. they are normally held by circlips so you can replace the disc only keeping the existing carrier. Stealth supply see above link.

best bet is to remove your wheel and the disc and inspect, sounds dodgy to me.

[Sid Squid]

The movement you have found is quite normal with SV discs and is there in order to allow the pad track to expand and contract without affecting the carrier and causing distortion and excessive runout. As long as the movement isn't excessive, (when cold the disc can move a surprising amount), it's not a problem. there should be no axial movement although in reality when cold it's not unusual to find that there is, but just perceptibly.

The SV is not fitted with floating discs.

the disc are flat, floating discs have an offset distance from the carrier, i stand to be corrected
The term floating discs has nothing to do with whether the disc is flat or dished, merely meaning that the disc and carrier are able to move axially in relation to each other.

[CB1ROCKET]

The discs are 2 and half years old - the same discs since the bike was new, and i really don't fancy buying "bling" discs for 300 quid lol hehe:eek:

[jambo]

The SV is not fitted with floating discs.


Clearly the gibberish fairy has been in charge of my memory today. Appologies and cheers to Sid Squid, as ever for coming up with the correct information....

[svdemon]

My front disc carriers could do with a lick of paint but i don't know how to get them apart from the disc itself. What tools do they require?

[richwill68]

SV discs are semi-floaters. An external rotor (the bit that gets bitten by the pads) and the carrier(the bit bolted to the wheel). These two parts are held together by bobbins (cotton reel shapes) which are flanged on one end and have a belville washer (gives a bit of spring to take up the slack between the bobbin an the carrier/rotor) on the other side which is then riveted over to keep the whole thing in place.

My discs, after 18k miles disintegrated the belville washers giving me true floating discs. Very noisy and just a little disconcerting as I was unsure as to the amount of wear caused to the carrier (alloy) by the bobbin (steel) rattling about. Ichose to replace mine but there are alternatives.

Stealth products can supply just bobbins, rebuild kits or complete discs. Check them out for prices. Two discs cost me £206 including next day delivery!

Hope this helps!

Laters

Rich

[richwill68]

My front disc carriers could do with a lick of paint but i don't know how to get them apart from the disc itself. What tools do they require?

You'll have to remove the discs, and carefully use an angle grinder to remove the riveted end of the bobbins. When you come to rebuild them, you'll obviously need new bobbins, spring washers and circlips though.

Lots of work for little gain....but if you want to, go for it.

PS don't mark the disc rotor when grinding.;)

Rich

[svdemon]

Nice one fella! i went to a local bike shop (been there 30 years) and they didn't have a clue what they (bobbins) were called or how to remove them!

[Apophes]

Hi just a question has the bike been dropped as after a very small bump with the back of a car i bent the slide pin on my left caliper and took its eating 2 discks to work out it was this breaking the spring washers. With the pin bent it was slightly twisting the rotor on the carrier. Also make double double sure the slide that runs in the rubber boot is kept free as this has the same effect when corrosion round the rubber bit grabs it onto the slider pin ( this ones more for winter riders)

[svdemon]

Does anyone know the size of the bobbins on a K3 sv650? Stealth want me to send them one in to make sure its the right part but i need my bike every day so that wouldn't be practical.

Or does anyone have an old one lying about?

[Dangerous Dave]

Phone up Stealth Products (http://www.stealthproducts.co.uk/products/discs.php) they can sell you some button rivets to replace yours.