In article <
[email protected]>,
jim beam <
[email protected]> wrote:
> [email protected] wrote:
> > Petrina Quinn writes:
> >
> >> I've been told that my poor brake technique - overuse of back
> >> brakes compared to front brakes and "cheap" rims had caused the
> >> back wheel rim to deform into a CONCAVE shape.
> >
> > Do you mean the brake track on the rim has become concave? That is
> > a natural occurrence with aluminum rims, especially with major
> > brand brake pads. If you hear a scraping noise when braking, you
> > have metal particles from the rim stuck in the brake pads and wear
> > rims rapidly.
> >
> > Therefore, my first suggestion is to get some Kool-Stop salmon-red
> > brake pads, either inserts that fit your brakes or the
> > "Continental" version that is a complete pad-bolt assembly. These
> > pads will not collect metal and are not as heat sensitive as some.
>
> like these kool-stop salmon pads you mean?
>
> http://www.flickr.com/photos/38636024@N00/101935519/
Can't tell if those are the salmon pads or just the red pads, which are
inferior. What the hell is "hothatch?" And is that "hot hatch" or "ho
thatch?"
> and they have frighteningly extended braking distances when wet.
As has been pointed out to you time and again, your experience is at
odds with pretty much everybody else's. This is just another such
example.
> oem campy or the new oem shimano pads are far superior, wet, dry, and
> don't accumulate grit when adjusted correctly.
When a variety of brake pads were tested by VeloNews on the Schwinn
brake testing rig, including wet and dry braking, the KoolStop salmon
pads came out as one of the best pads in both conditions. That included
Shimano and Campy OEM pads, various other KoolStop pads, Ritchey pads,
etc. But that was 1995 and perhaps other compounds have come along. I
haven't seen any repeat testing for comparison. Unfortunately the
original article doesn't seem to be on the VeloNews site any more. It
was in the May 22, 1995 issue according to references I could find. One
site reproduces part of the results:
http://homepages.paradise.net.nz/hg/newsletters/95august.htm
The rest of the article demonstrates some lack of understanding of
physics, but hey, it's the Web. Caveat emptor. The interesting point
is in the table- that with the KoolStop material, stopping distance
(time to stop in this case) in the wet was twice that in dry conditions,
but that was the best ratio of any of the other pads.
I've ridden with people using the recent Shimano pads. The grinding
noises and poor dry stopping performance are frightening to behold.
I've had better results, in wet and dry, with the salmon pads than any
other including both of the ones you name. Although mine are all
branded "Scott/Mathauser" since I think the KoolStop pads are a bit
dinky and I prefer not having grooves on the braking surface- but the
pads are made by the same manufacturer from the same compound.