Yamaha wr250f front wheel issue

[courts]

Have my front wheel slightly skewed from side to side as it moves around- only slighht but you can hear it just brush the discs at one point
not sure whether it was from impact or have a feeling i may have left clickers uneven for a ride.oops
easy way to fix..???

[speights_bud]

Is it just the disc rubbing? or is the rim not running true aswell? i guess start by checking for slop in wheel bearings, it could also be a warped disc due to heat, but i doubt it. its relatively normal for a disc to 'brush' the brake pads, but if its in any way creating friction then thats not so good.

[Danger]

Bit unsure what your problem is? Is the brake disc slightly bent or are the forks twisted in the clamps? Or is the wheel out of true? All three require a different approach so please elaborate on what the issue is.

[speights_bud]

twisted forks in the clamps shouldn't affect the disk, the axle should ensure the caliper and disc remain in line

[courts]

yeah rim not running true, doesnt appear to have slop in bearing

[Danger]

So is your rim bent? Are your spokes at equal tension?

[speights_bud]

I would assume you are running spoked wheels, (instead of motard type mags). So Check that all the spokes are there, not broken, bent or loose. Loose spokes will allow the rim to run off from the centre hub.

If you hold a ruler to the edge of the rim across the forkleg and rotate the wheel while its off the ground, let the rim push away the rule at its most bent point, then you should be left with a gap after the bent most part. this will give you a good indication of how far out the rim is running.

Have a look to see if the Gap is gradual or sudden, this is the a good indication between a ding in the rim or the entire rim running off axis

Do this both sides as it may only be one side of the rim lip thats bent.

careful not to scratch your rim if you use a steel rule.

Hope that helps

[T.W.R]

A bend rim wont effect a disc scuffing through the caliper at one particular point on the rotation of the wheel.
You've either got a warped disc, bent disc carrier arm, bent axle, or a collapsed bearing.
A bent axle or knackered bearing will effect the whole wheel

A bent carrier arm can create the illusion of a warped disc and can successfully be fixed with a bit of ingenuity, but will only be confirmed if the point where the disc scuffs the pads does line up with one of the arms.

Take the wheel out & check the bearings and axle first; if the bearings feel notchy turf them & get new ones. simple check for the axle is to roll it on a flat surface (so the shaft is flat) and check for any air gaps as it does a full rotation or if you've got access to a lathe mount it in the lathe & check for run-out with a dial gauge.

[mc4aregreat]

For a warped disc, this is how it is described in an ADB Tech guide i ripped out of one of there magazines.

1:Spread the caliper open by pushing it in towards the disc until the piston retracts back into the caliper body.This will become your truing guide and will let you see where (and which way) the disc is warped by checking the distance between it and the pads.

2:With the caliper spread, align it centrally so you can see daylight between the disc and pads on either side.Rotate the wheel, keeping an eye on the profile of the disc as it rotates through the pads.The warp will reveal itself as it leans towards one of the pads.

3:As the disc contacts a pad, stop the wheel and mark this point on the disc with a permanant marker.Repeat this step several times until you are happy you have homed in on the most extreme point of the warp in the disc.There may be be more than one of these warped areas.

4:With your special straightening tool in hand (shifter), slide it over the relevant texta mark and lightly flex the disc in the opposite direction of the warp.This requires a certain amount of feel to get right.Its very easy to bend it back too far.Gently does it. Spin the wheel again and check your progress.