Rear brake - how much "friction"?

[NeilF]

I've just replaced the rear pads on my 2001 1150GS - the floating side pad was on the metal, but the outer pad was fine. I put this down to the pin being shitty and pitted, so I cleaned it up and copper-slipped it.

My question is: how much friction should there be when I rotate the rear wheel while the bike is on the centre stand?

Went for a 60 mile blast yesterday and while the front disks were cold the rear disk was hot to touch. I'm concerned that either the pads are not seated properly, or that I've got bigger problems with the caliper arrangement, or even final drive problems?

Cheers,

Neil.

 

[sockpuppet]

I'd say thats the pads bedding in.

 

[Greg Masters]

The front discs are:

• a pair
• bigger
• hanging in the breeze
• not adjacent to a differential unit

Even though the fronts should do most work, I'm not surprised that the rear disc was hotter.

Greg

 

[harryfire]

pads bedding in.

 

[GlynnJ]

I think you are asking how much resistance there should be to your rear wheel rotating?

When the transmission is warm (and therefore the oil is thin) the rear wheel should rotate quite freely. It probably won't do more than a single rotation but it should certainly move very easily.

Motorworks can supply all the bits you need to fettle the calliper. I would suggest you at least replace the pin (and go easy with the Copperslip!).

Glynn

 

[cookie]

the rubbers over the slider pins press one pad against the disc constantly. this causes some friction.

 

[how far to]

Always found rear pads wear unevenly,doesnt seem to make much difference what you do Cheers

 

[davegs]

Pads

The inner one ALWAYS wears out quicker than the outside pad, this is due to the way the caliper operates not a fault but keep an eye on it as it can score the disc badly.

 

[Hong Kong Nick]

Mine is quite similar - rotate the wheel when cold and in neutral and it will turn about half a turn (front wheel turns forever!). I realise this is a shaft drive trait but you can feel some bind from the pads, too. My 2003 GS has 50+ thousand KMs on it and it's on the 3rd pair of pads. The man from BMW HK mentioned it but said that half the GSs he sees wear through rear pads quite quickly whilst half of them are fine. He didn't seem overly worried about it and the bike is none the worse for it.

I've been keeping a record of petrol useage this year and I seem to be getting 50-ish MPG per tank so it's not like there is a problem at the back wheel.

Methinks!

Is it another 'they all do that sir!' ... well, half of them do!

Just enjoy riding it

Nick

 

[brad949]

The Ferodo pads I've just bought to fit to my !!50 are different thickness staight from the pack

brad

 

[Steptoe]

The Ferodo pads I've just bought to fit to my !!50 are different thickness staight from the pack

brad

They are meant to be. One side wears faster than the other.

Although even allowing for different thicknesses you'll still have loads of pad left on one side when the other is worn out

 

[NeilF]

Thanks all - I'm greatly reassured!


Cheers,

Neil.