Brake Pads

[The Saint]

I have put a set of these on my bike, has anyone ever ridden them? Got advised by the LBS that they would help with the overheating of the carbon / alu rim. Not that they would stop the rim from heating up but they would not deteriorate as quick as the standard Shimano pad.

 

They are made by BBB but what concerns me is that the box says the different colours do different jobs, the website states that they are a TRIPLE Compound whereas the technical details state that they are ONE compound for the ultimate look Bugger the look I want to stop!!!

 

 

[Delgado]

i've got these Mux and they work great mate!!!

[The Saint]

Ahhhh Ok I am at ease now, my trusted mate Delgado has given them the thumbs up...thank you...admin you can now trash this topic now further advice necessary.

[Johan Bornman]

I have put a set of these on my bike' date=' has anyone ever ridden them? Got advised by the LBS that they would help with the overheating of the carbon / alu rim. Not that they would stop the rim from heating up but they would not deteriorate as quick as the standard Shimano pad.

They are made by BBB but what concerns me is that the box says the different colours do different jobs, the website states that they are a TRIPLE Compound whereas the technical details state that they are ONE compound for the ultimate look Bugger the look I want to stop!!!


[/quote']

You can't have your cake and eat it. You can either have carbon rims or you can stop. Choose one.

 

A triple, or double compound is the industry's attempt at getting carbon wheels to stop properly under severe braking conditions. The problem is that they cannot remove the heat from the pads because they dont conduct heat in the first place. Therefore the pads get very hot and melt. If you've ever suddenly lost your brakes mid-way down a steep hill...that's the point where the pads started to melt and so did any stopping force you had up to that point.

 

One way of bringing the melting point up is to make harder pads. These do have a higher melting point, but also don't stop in the first place. To counteract that problem, they make half the pad soft and half hard. Now you tell us that the've invented the triple-blade razor for wheels, a soft, medium and hard pad in one - in three distinct colours of course.

 

It's a viscious circle.

Fact is, carbon is an inappropriate material for general purpose rims. Period.

 

Having a carbon rim with an aluminium braking surface only delays the melting point by a few hundred meters.

 

Unfortunately aluminium is just not cool, or so I'm told.

 

Johan Bornman2007-11-15 13:11:15

[Pilks]

So the point made hear is dont break

 

 

 

On serious note: How long would i have to be riding on my brakes before they melt and well i lose breaking power ?

 

 

 

Lets say 10 percent gradient and i am wanting to travel at 20km with no head or tail wind

[Windbreaker]

in the karoo in summer or cape town in winter?

[Pilks]

Freezing Artic where the temperature is -50

[Johan Bornman]

So the point made hear is dont break

On serious note: How long would i have to be riding on my brakes before they melt and well i lose breaking power ?

Lets say 10 percent gradient and i am wanting to travel at 20km with no head or tail wind

 

I don't know, but what is certain is that if you don't brake, you might break...a leg or something.

 

How much do you weigh? What is the ambient temperature? How fast is the tailwind and will you be using your front or rear brake, or both?

 

See, there are just too many variables to answer that question. However, not so long ago there was a discussion on The Hub where someone lost brakes in the Suikerbosrand, due to half-carbon half-alu wheels.

 

I've gone down those hills where Shimano's horrid black pads threw black crumbs onto my thighs, indicating that they were about to melt. However, having aluminium rims and only using my front brakes, I never go over the critical point.

 

With far superior Koolstop (salmon coloured) pads I have none of the black sawdust coming off and certainly no melting or aluminium pick-up that grinds the rims.

 

Carbon rims are fine for time-trials and going uphill, but stay away when descending and oh, they're useless for spoke longevity, but that's another thread on its own.

 

JB

 

 

 

 

 

 

 

 

 

[Warped]

Ja, you larney's, aluminium's not so bad after all!