NEW DISCS!!!

[Anthony]

Just changed discs due to a MOT failure

Bought off fleabay at 1430 and by 1100 the next day new discs were delivered for a great price would totally recommend sally's bike spares really fast service

anyway, installed the new discs, all round, but kept old pads due to them having several thousands miles still in them sanded them to remove any bumps and installed them too now......

the brake pads and discs now rub, and I mean a light rub, something that you often hear on very close pads, they make moving the bike a little tricky on stones but they don't affect it too much under throttle. the discs get a little hot after a run up the road to test them, even when I don't use them :s the callipers had a re-haul recently and the pistons do move as I have checked and there is air in the reservoirs', the pads are shinning lines on the discs, obv were they are making contact, is this normal for new discs etc.???? and will the pads stop rubbing in say 10 miles etc. or is this a more serious problem, bearing in mind that the old discs and the same pads didn't rub at all

Thanks

[Colin the Bear]

The price you've paid for the discs I'd have fitted new pads. Spoil the ship for a h'aporth of tar.

[Anthony]

well they wanted 45 for new pads and I paid 214 for three new discs, wavy too but I don't have that much money to waste if my pads have more life in them

[Guest]

did you push the pistons back when fitting the disc, as you would have to with new pads, (with colin on new pads...) otherwise the pistons haven't retracted enough.. and settled in the new postion, disc could be slightly thicker..

[Guest]

Moved to pitstop for ya

I'da put new pads in too ....

[Anthony]

yea, as when i pulled the lever it was dead and retracted fully, so i had to pump the pistons out, i take it this is the same any ideas?

[Guest]

yea, as when i pulled the lever it was dead and retracted fully, so i had to pump the pistons out, i take it this is the same any ideas?

 

can you push the bike easily.. and if its the back is the wheel aligned properly, could be slightly out causing the rub...

[Anthony]

it pushes however their is a slight need to put more effort in, the back doesn't rub as bad due to checking it off the ground and i can defo hear the front being the problem, is the rub normal cos i think it is but then again im not too sure :s ?

[Stu]

a slight rub is usually normal

check tyre pressures to rule them out if you are low on pressure the bike will feel heavy

[Guest]

you could try this..remove one caliper, pump the brake with the pads inside the caliper, this will push the piston out slightly, lightly grease the piston with rubber grease and a cotton bud, then push the piston back refit, and do on the other side, this will aid the pistons to retract, could be there binding slightly (bandits are known for this.. ), otherwise take it for the MOT and they'll say whether theres a problem or not, could be a ride beds them in properly... but take it easy on new brakes..

Edited September 15, 2009 by Anonymous

[Anthony]

they are perfect, done them the other day, aren't i good

[Colin the Bear]

The pads are obviously dragging. If you ride like this the heat generated may warp you new discs rendering them scrap metal.

When you sanded the friction material of the pads you may have inadvertantly rubbed them out of square/ alignment.

This misalignment may be causing the pads to jam/stick. Hence the brakes are binding

Did you copperslip ?

The brakes are one of the areas you can't skimp on. Fit some new pads.

It may seem like unecessary expense but it would be a shame to have to buy new discs and pads at best.

Goodness knows what brake failure will cost you.

[Anthony]

good idea thanks i think im gna take it for an MOT and ride at the same time and then test they seem to move in and out fine tho

[Colin the Bear]

they are perfect, done them the other day, aren't i good

 

You having a laff?

First post 45 mins ago but you fixed them the other day

[Anthony]

i got a year warranty on the discs so not fussed bout that lol, but obv i dot want binding brakes, however they were causing problems before i sanded them????

edit, i meant the tyre pressures

[Colin the Bear]

aah ,,,, them.

Your warranty will not cover misuse.

[Anthony]

but i know but still, shall i accept this rub as normal, tbh i havent ridden it far so cannot rule out that it will go ???

[Stu]

its hard to say if its normal rub without looking feeling listening etc etc

personally i would take the bike for a short ride 5 miles or so and see how it is

[Colin the Bear]

You've been working on the brakes and now they don't work properly.

Should you take it for a ride to see if they get better.

Are you serious?

[Anthony]

i've done sillier things, but they are fine, they just rub slightly, just want it solved lol

[Stu]

You've been working on the brakes and now they don't work properly.

Should you take it for a ride to see if they get better.

Are you serious?

 

on which part does he say they dont work properly ?

there is only a slight rub

brakes do tend to fur up if left even after one day and soon free up once ridden!!!

[Anthony]

well i dunno whats up, i think its exactly what i thought and some have suggested, its bedding in, or at least i hope it is will find out tomoro on way to school, hope it sorts out cos i got MOT after 3

[Guest]

now fixed, problem was the front wheel spindle not fully home.... so caliper mount rubbing on discs

http://www.themotorbikeforum.co.uk/view ... =5&t=25270