Yestarday I was climbing one of my favourites hills, when it began snowing quite heavily. I had to do the last km with the bike over the shoulders because there was too much snow on the road to keep pedaling. Everything fine (if you can call 'fine' snowing in may) until I began the downhill. In fact the first km with the road covered of snow is not so steep, so I stayed on the bike going really slow and carefully, you can imagine I braked a lot. After a minute or so I noticed the brake pads were literally pulverizing and also melting (front and rear, same thing), leaving a lot of black powder/pieces/drops everywhere on the hubs/spokes/chain etc. It remained just a little bit of gum, enough to ride home being able to stop at lights. I never saw something like that, and I rode several times with snow and rain, with those same pads. The pads are Dura-Ace 7700 and they have some 6 months of use (the rims are OpenPro).
It remained just a little bit of gum, enough to ride home being able to stop at lights. I never saw something like that, and I rode several times with snow and rain, with those same pads.
...is that normal? Thanks, Francesco
I rode downhill in snow only once and I do not remember anything like that. On the other hand, riding in rainy conditions or, worse, on a muddy road can wear out pads in no time.
Yestarday I was climbing one of my favourites hills, when it began snowing quite heavily. I had to do the last km with the bike over the shoulders because there was too much snow on the road to keep pedaling. Everything fine (if you can call 'fine' snowing in may) until I began the downhill. In fact the first km with the road covered of snow is not so steep, so I stayed on the bike going really slow and carefully, you can imagine I braked a lot. After a minute or so I noticed the brake pads were literally pulverizing and also melting (front and rear, same thing), leaving a lot of black powder/pieces/drops everywhere on the hubs/spokes/chain etc. It remained just a little bit of gum, enough to ride home being able to stop at lights. I never saw something like that, and I rode several times with snow and rain, with those same pads. The pads are Dura- Ace 7700 and they have some 6 months of use (the rims are OpenPro).
...is that normal?
I've gone halfway through a set of 105 brake pads in a wet/gritty 60 mile ride. The same pads had been on for 18 months with no discernible wear.
In fact the first km with the road covered of snow is not so steep, so I stayed on the bike going really slow and carefully, you can imagine I braked a lot. After a minute or so I noticed the brake pads were literally pulverizing and also melting
Going slowly down a hill is the worst case for braking, since it heats the pads the most. The grit picked up from the snowy road was the finisher.
Quoted message said:
The pads are Dura-Ace 7700 and they have some 6 months of use
Replace those pads with KoolStop salmon pads. They don't disintegrate in extreme conditions, and they're kinder to rims:
Yestarday I was climbing one of my favourites hills, when it began snowing quite heavily. I had to do the last km with the bike over the shoulders because there was too much snow on the road to keep pedaling. Everything fine (if you can call 'fine' snowing in may) until I began the downhill. In fact the first km with the road covered of snow is not so steep, so I stayed on the bike going really slow and carefully, you can imagine I braked a lot. After a minute or so I noticed the brake pads were literally pulverizing and also melting (front and rear, same thing), leaving a lot of black powder/pieces/drops everywhere on the hubs/spokes/chain etc. It remained just a little bit of gum, enough to ride home being able to stop at lights. I never saw something like that, and I rode several times with snow and rain, with those same pads. The pads are Dura- Ace 7700 and they have some 6 months of use (the rims are OpenPro).
...is that normal?
Yep. You're watching the accumulated oxides wash out from the scratches of your rim and out of the slits in the brake blocks. At the start of a rain, you'll see grey stripes down your fork from thet.
-- Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971
Captain's log. On StarDate Sat, 08 May 2004 09:39:41 -0700 received comm from Terry Morse <[email hidden]> on channel rec.bicycles.tech:
: > The pads are Dura-Ace 7700 and they have some 6 months : > of use : : Replace those pads with KoolStop salmon pads. They don't : disintegrate in extreme conditions, and they're kinder : to rims: : : koolstop.combrakesOpen ↗
DI you know if they fit Ultegra (600) brakes as well? Can you fit Koolstop dual compound pads into them?
DI you know if they fit Ultegra (600) brakes as well? Can you fit Koolstop
dual
Quoted message said:
compound pads into them?
Yes, they'll fit any of the Ultegra holders that take replaceable pads (which means anything from the start of the 9-speed group). If you go to the Koolstop web page at koolstop.combrakesOpen ↗, you won't find any dual- compound replacement pads for road bikes... yet. It does show an unusual 3-piece pad that's due to come out sometime in the future but, frankly, I don't see the need. I ride rain or shine, and have been very impressed with the Koolstop pad's wear characteristics in the rain (compared to Shimano).
"Martin Törnsten" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
Captain's log. On StarDate Sat, 08 May 2004 09:39:41 -0700 received comm
from
Quoted message said:
Terry Morse <[email hidden]> on channel rec.bicycles.tech:
: > The pads are Dura-Ace 7700 and they have some 6 months : > of use : : Replace those pads with KoolStop salmon pads. They don't : disintegrate in extreme conditions, and they're kinder : to rims: : : koolstop.combrakesOpen ↗
DI you know if they fit Ultegra (600) brakes as well? Can you fit Koolstop
I never saw something like that, and I rode several times with snow and rain, with those same pads. The pads are Dura- Ace 7700 and they have some 6 months of use (the rims are OpenPro).
Brake pads are Shimano's Achilles Heel - by my reckoning the most useless product they sell. Replace 'em with Kool Stop Salmons. -- David Damerell <[email hidden]> flcl?
