Front Brake problems

[brimo]

how old is the fluid, hot brakes, moisture in fluid, expansion, locked brakes.

[Dockstrada]

how old is the fluid, hot brakes, moisture in fluid, expansion, locked brakes.

It has done  7 or 8  track days , with in this time a set of OEM pads.

[Nickati]

If you take the caliper off and push the pistons back without the retainer springs in do the pads slide freely ??

Any burrs on the pads ?

Retainers bent ??

[brimo]

Air in the lines will expand a lot when hot too

[Dockstrada]

If you take the caliper off and push the pistons back without the retainer springs in do the pads slide freely ??

Any burrs on the pads ?

Retainers bent ??

Yep nice and free ,Can't see how the retainers would have an effect on the pads in that direction if it was bent .It is only to keep the pads in the caliper and not as a slide.

I think I'm heading down the expanding fluid/moisture/air direction  

[brad black]

undo the grub screw locking the m/cyl piston pushrod adjuster and wind it out a turn and see if that changes anything.

[Dockstrada]

undo the grub screw locking the m/cyl piston pushrod adjuster and wind it out a turn and see if that changes anything.

Tried that , I have these leavers fitted to it with all types of adjustments,The red nob reduces the pressure on the piston rod .

[Nickati]

Can't see it being the fluid, but hey there's always something to learn even after years  in the automotive industry !

[brimo]

Yeah,  sorry, I never asked, is it one or both calipers seizing? Hard to tell I know, but aids a lot in the diagnosis.

[Dockstrada]

Can't see it being the fluid, but hey there's always something to learn even after years  in the automotive industry !

Sold a bike to a guy once ,an Aprillia RSV. 20 minutes later he rings me telling me hes stuck on the side of the road and the back wheels locked.

He called me back after a few days,turns out he was riding the rear brake and locked the wheel when the fluid expanded.

[Dockstrada]

Yeah,  sorry, I never asked, is it one or both calipers seizing? Hard to tell I know, but aids a lot in the diagnosis.

Be difficult to find out  if it was only one caliper

[Nickati]

Sold a bike to a guy once ,an Aprillia RSV. 20 minutes later he rings me telling me hes stuck on the side of the road and the back wheels locked.

He called me back after a few days,turns out he was riding the rear brake and locked the wheel when the fluid expanded.

Heat can do strange things

[brimo]

Be difficult to find out  if it was only one caliper

If you've got it up on a stand, put some pencil marks (or Bearing blue or texta, but not too much) on the disc, get a mate to turn the wheel and
listen at the caliper to see if you can tell by the sound, otherwise check to see if the pencil /bearing blue marks have rubbed off.

[Betty]

OK Dock I have applied my almost incomparable mechanical and motorcycling knowledge to your query and identified the problem and offer a solution.

It would seem your poor tortured bike is mounting a protest at the hard life it has led. So the most obvious solution is to find an appropriate home for it as it is like a little puppy that can't be cared for appropriately.

We can offer this poor unfortunate a loving home where it will be surrounded by friendly faces that will not intimidate such a youngster. I can only assume you are just days away from posting up 'free to a god home' ... and when you do remember us and this post, we will do what we can to help.

Oh yeah and the added advantage is I could ride the bike with the handbrake on and probably not realise its capabilities have been restrained.

Everybody wins!

[Dockstrada]

Her working days as a track wench are not over yet Betty,She'll be ridden hard for some time yet as was the R1 .But when she is ready for pasture I will keep you in mind.