Something I haven`t noticed b4, when I pulled up at a "T" intersection  on an incline 2day using only rear brakes I discovered they Didn`t hold the bike from rolling back WTF is going on ,then after riding off down the road & applying the brakes normally both front & back there is a noticable Knock from the rear brakes, like something moves back into place  ..In  a forward direction if I apply back brakes only they seem to work find & they will definately pull me up quickly.

Some History:2012 Roadking with ABS  I have change my pads a couple times both front & back with no probs am now running Lyndell Gold have been for bout a year no probs. recently changed my tyres front & back had them fitted I put back on bike everything seemed routine 

Has anyone with a little more Knowledge ever heard of this ? I will get them checked out but I have had some great advice from some very cluey people on hear B4, thought I`d start hear.. thanks in advance 

Loose brake rotor? Can you rock the rotor at all?

Rotor checks out OK

On the rotor, you tried to turn it around, right, not wobble it back and forth? The clunk, to me, suggests something loose is loose in the rear. The backwards thing has me stumped though, unless your not applying enough pressure because of the different position you sit when stopped.

I guess we need someone more cluey on this stuff.

not loose bonkers re tightened all bolts ,checked wheel alignment, made sure caliper was tight ,belt was correct tension, more research needed, thinking maybe the clips that hold pads in place maybe worn will keep on it...any one else with suggestion would be great thanks for your input

have you tried flushing the fluid out and re-bleeding it?
ABS brakes be it cars or bikes is very sensitive to possible air in the system as when you apply the brake you are going from the master cyl into the ABS block then to the caliper.

I had a similar issue on my car with abs and it was air in the ABS block, flushing the fluid and bleeding solved the car issue.

try this, I hope it solves it for you

also, check the wire sensor to make sure its not damaged at the caliper & the rubber damper on the caliper mounting bracket (possible cause of the clunk) if its gone or worn out could be allowing the caliper to move / make sure the mount bracket is slid into the slot thing on the swingarm correctly, if the mount is not in the slot and you apply the brake in a reversing scenario the turning of the disc will natrurally push the caliper out (away from the disc) and then when you go forward and apply the brake pull it in to the disc.

rob

no probs mate, easy way to check as follows,

sit on bike & roll back a little & apply rear brake. You will see if the caliper rises up

Ask ando he will know

Fucking off Dick head

But just Check you have the locating tabs of the pad seated in the caliper especially the inside pad
If this is not seat is will roll out of the caliper when rolling back and not clamp the disc and roll back in when moving foward make a noise and sort of clamp the disc

Oh and BlueySuperStar I sent you and PM just if you decide ya wanna stop being a keyboard warrior

Are you a Internet bully ando all I said to ask you you know everything eals

if it happens again let us know.

Just like to thanks you blokes for your input its all sorted now. & big thanks to Robnicko you are spot on the money mate the caliper bracket wasn`t in the swingarm  slot allowing it to rotate backwards . Stuffed if I know how I missed that I norrmally take my time & check everything as it comes off, & goes back on, anyway I don`t know where you live but I owe you a beer or three mate so if your heading down Nowra way PM me , cheers  Rod

Good to see you got it sorted !!!! Could you post up a pic of where the caliper bracket was not in its correct position ??
I am familiar with all the components you are talking about,, just cant get my head around the bracket rotating backwards !!! .... What I find , when everything is lined up correctly, and axle is pushed through,, the caliper bracket finds its correct position .... Cheers ...

Found a couple of pics on my computer that may help with identifying where your problems was .... Cheers

Rod,

Glad to hear that you sorted it out and all is well. Im in melbourne mate so a long way but appreciate the thought!

Markwoumla,
There is a steel tab on the swing arm where the caliper mounting bracket slides onto. Very easy to accidentally put the bracket on top of the tab as opposed to sliding it onto it. I learnt this on my XR400 trailbike many moons ago.
As for the bracket rotating backwards when not in the slot, the pressure of the pads when applying the brake and rolling backwards>the wheel/rotor will roll back and drag the caliper & bracket up&back with it giving the effect of no brakes, then the caliper&bracket stay there until applying the brake in a forward motion bringing the whole assembly back onto the tab (this is the clunk that Rod mentioned). The caliper mount bracket has a slot with a rubber vibration dampner that goes either side of the swingarm tab when installed preventing the mount from moving back & forth

hope this makes sense?

rob




 

Not sure how this will go Mark

the slot on the end of the caliper arm...just under the number 3 goes around swing arm with the little rubber bumper number 4 going on the under side  which stops it from spinning back wards on the axle axis  in this case upwards when rolling back & braking at the same time....then when in a forward motion it rotates forward resting on the swing arm & braking is relativly normal... Hope this clears it up for ya cheers

actual pic you can see ,to the right of brake line bango bolt how it now goes around swing arm 

Might pat to check ypur brake line incase it has streched it and weakened it. Just a thought

Might pat to check ypur brake line incase it has streched it and weakened it. Just a thought

your right choppa it was stretched on order now mate