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LustyLew
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Joined: 19 Apr 2004
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PostPosted: 13:22 - 01 Dec 2004    Post subject: Brake pads question Reply with quote

Hi,

Just a quick question.

What is the difference between 'Standard' and 'Sintered' brake pads?

Thanks Smile
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 14:38 - 01 Dec 2004    Post subject: Reply with quote

Hi

Sintered pads have bits of metal imbedded in them. Generally work rather better.

All the best

Keith
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mchaggis
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PostPosted: 16:50 - 01 Dec 2004    Post subject: Re: Brake pads question Reply with quote

LH-ER5 wrote:
Hi,

Just a quick question.

What is the difference between 'Standard' and 'Sintered' brake pads?

Thanks Smile


I'm not exactly sure how Standard pads are made, other than pressing? Confused

Sintered pads are somewhat porous though, as they're made of a big pile of semi-metallic powder plus whatever else goes in (a very odd mixture of things, mainly chalk), put in a press and heated until they almost melt. The powder granules stick together without becoming molten. I imagine their coefficient of friction is higher and that they will clean themselves better perhaps.

Basically, like Keith says, it's primarily a difference in composition (and manufacture) to improve their friction qualities. I'm not sure if they wear faster, but probably.

Quote:
To cause (metallic powder, for example) to form a coherent mass by heating without melting.

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Bendy
Mrs Sensible



Joined: 10 Jun 2002
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PostPosted: 17:04 - 01 Dec 2004    Post subject: Reply with quote

I believe that over time, sintered pads will eat your brake discs faster than standard pads, but it's a small price for better braking innit. Smile
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stinkwheel
Bovine Proctologist



Joined: 12 Jul 2004
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PostPosted: 17:06 - 01 Dec 2004    Post subject: Reply with quote

The difference you need to know about is that sintered brake pads have more friction over a greater range of temperatures whereas standard pads can go 'off' if they get too hot. They have higher friction and so are more efficient at slowing you down, the downside of this is that they will wear your discs out more quickly.

Having a lot of metal in them means the pads themselves actually last quite a long time.

Another plus point of sintered pads is that they are unaffected by water on the disc/pads.

To summarise, sintered pads are better but wear your disc out more quickly. Check out the price of pattern discs before you decide to use them.
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mchaggis
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PostPosted: 17:06 - 01 Dec 2004    Post subject: Reply with quote

Bendy wrote:
I believe that over time, sintered pads will eat your brake discs faster than standard pads, but it's a small price for better braking innit. Smile


Ah of course, my memory's pants these days and I'm only 20... Rolling Eyes

Sacrificial braking. Normally your pads are sacrificed (worn) to get a high level of braking. Put on more abrasive pads and your discs will wear more too.
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LustyLew
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PostPosted: 17:48 - 01 Dec 2004    Post subject: Reply with quote

Wow! Plenty of responses... Thanks guys. Think I'm going to stick to standard pads this time round. My damn brakes have decided to go through a 'binding' phase. Due for their annual rebuild I think.


Thanks again. Smile
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stinkwheel
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PostPosted: 18:23 - 01 Dec 2004    Post subject: Reply with quote

LH-ER5 wrote:
Due for their annual rebuild I think.


If this involves draining down the fluid, and you haven't already done so. I would wholeheartedly recommend the fitting of braided steel brake lines in place of the original rubber ones as the single best thing you can do to a motorbike to improve the brakes. They are not too expensive (like about £15 per line).
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mchaggis
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PostPosted: 18:33 - 01 Dec 2004    Post subject: Reply with quote

Just had a thought... Would it be possible for braided aftermarket lines to be cheaper than replacement OE rubber ones?

It certainly looks like it, as OE brake lines for an NT650 are 40 odd dollars on a site which I finally managed to find to give a price for rubber lines. $40 for rubber ones, vs. $20-25 for braided? Confused
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Fortuna
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PostPosted: 18:58 - 01 Dec 2004    Post subject: Reply with quote

mchaggis wrote:
Just had a thought... Would it be possible for braided aftermarket lines to be cheaper than replacement OE rubber ones?

It certainly looks like it, as OE brake lines for an NT650 are 40 odd dollars on a site which I finally managed to find to give a price for rubber lines. $40 for rubber ones, vs. $20-25 for braided? Confused

Yes indeed. OEM stuff is always dear.
BTW don't be off put by sintered having metal in them as it's a very soft metal, softer than your disc so it wears first. BUT it will wear your discs faster than normal pads like everyone else has said.
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Kickstart
The Oracle



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PostPosted: 21:44 - 01 Dec 2004    Post subject: Reply with quote

Hi

You can actually get non OEM rubber hoses, but they are not common.

To be honest I am not that keen on braided hoses. I just find the feel is not so good, but then I do like some travel in the brakes.

In the USA (and probably a few other countries) the bolt together braided hoses commonly sold in the UK are not legal for road use.

All the best

Keith
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LustyLew
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PostPosted: 23:57 - 01 Dec 2004    Post subject: Reply with quote

hi ya peeps,

Thanks for the advice so far, it's been a great help. I do however, have a few more questions. Embarassed

My friend and I took a look at my caliper the other day, to try and find out why it was binding so much. We did not have the whole thing apart, but from where we could see, the pistons were not sticking and it seemed to be 'floating' OK(ish).

When I brake I get a noise that would indicate that the pads or disc are rubbing uneven. The noise comes and goes in a rhythmic fashion and looking at one of my pads, its down to the wear marker on one side, but plenty of material left on the other.

I'm hoping that I'm just wrong about it floating properly. My local bike mechanic has said he'd take a look, but has suggested new pistons and seals. Do you think it's also worthwhile replacing the disc? This binding problem has made the surface quite uneven.

Think I'll refer to Korn's guide too, save myselfa few bob. I like getting my hands mucky. Very Happy

Thanks again.

Lewis
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