3 replies to this topic

[jonnyc]

should my front disc brake disc be a wee bit lose should it be?? i tryed tighting it but the screws are tight as they will go..!!!

[feetupfun]

jonnyc, on Oct 30 2008, 11:17 PM, said:

should my front disc brake disc be a wee bit lose should it be?? i tryed tighting it but the screws are tight as they will go..!!!

Yes it should move a wee bit. Its called a floating disc and helps the disc stay nice and flat when it gets hot, and ensures that the disc can move to align with the pad surfaces when braking if there is any slight difference in alignment without flexing the disc.

[Dan Williams]

Careful you don't break off a screw or crack the hub. All disks are now floating type and have some freeplay. Just as a rule of thumb, if you're nervous you're tightening too much you are. None of the modern machines has much metal behind that bolt no matter where it is on the bike with the possible exception of the crankshaft.

Most disks have some type of finger washer on both sides to approximately center the disk.

[biffsgasgas]

And they will rattle when the brakes are not applied.

--Biff