Kool-Stop screech

Eric S. <[email hidden]> wrote in message "]news:[email hidden]...

Quoted message said:

I've seen this problem mentioned elsewhere, but the suggested solution generally seems to include
toeing-in the brake shoes -- I don't believe this is an option for me as I have recent Ultegra
sidepull brakes.

I bought some Kool-Stop Dura-Type salmon pads to fix the problem Mike Jacoubowsky discusses here:
chainreaction.combrakeshoes.htmOpen ↗ (it seems like the local shops here in southern France
have bad batches of Dura-Ace pads, because this supposedly is no longer a problem with DA pads).

Anyway, while I had the grinding problem with the DA pads, they never screeched or squealed. The
Kool-Stops are great in every way except for the last few feet just as I'm coming to a stop, when
they screech something awful. They don't make any noise at all up until then.

When I installed them, I have to say I wondered if this would be a problem because the raised lip
at the back of the pad means the front of the pad hits the rim AFTER the back does, which I
understand to be a classic cause of noisy brakes.

But there is only the small lip hitting - the main body of the back of the pad isn't, so that might
not be the problem

Quoted message said:

I'm reluctant to sand that lip down because I don't want the grit from the sandpaper hanging
around to cause more destruction to my poor rims.

Any suggestions?

Thanks in advance.

Trim it off with a craft knife or somesuch if you really think it needs to be removed - can't do any
harm - those lips are just there to help with toe-in during initial set-up and wear off pretty
quickly in my experience.

Shaun aRe

Eric S. said:

I've seen this problem mentioned elsewhere, but the suggested solution generally seems to include
toeing-in the brake shoes -- I don't believe this is an option for me as I have recent Ultegra
sidepull brakes.

It would be an option if you used Kool Stop Dura shoes which offer orbital adjustment. These should
fit your Ultegras and any normal calipers. Available from
www.sheldonbrown.com/harris/brakeshoes.html

/snip

Quoted message said:

I'm reluctant to sand that lip down because I don't want the grit from the sandpaper hanging
around to cause more destruction to my poor rims.

It may not help but remove them you like. Use a file and there won't be any grit. The dust can be
cleaned up with meths or mineral spirits - which is also good for general cleaning of pads and rims.

Kool Stops don't always squeal, by the way.

To remove temporary squealing caused by oil on the rims, ride fast down a steep hill with the
brakes on!

~PB

(Eric S.) said:

When I installed them, I have to say I wondered if this would be a problem because the raised lip
at the back of the pad means the front of the pad hits the rim AFTER the back does, which I
understand to be a classic cause of noisy brakes.

I'm reluctant to sand that lip down because I don't want the grit from the sandpaper hanging around
to cause more destruction to my poor rims.

Any suggestions?

Thanks in advance.

--Eric S.

Go ahead and sand off the back tip. The sandpaper won't leave grit in the pads.

While you are at it, keep sanding the back edge away to create a bevel on the last fourth or so of
the pad. Nothing severe, a 2-3 mm relief. I know that this eliminated noise on the old Mattahauser
pads on a road bike which are supposedly a very similar compound to the KoolStop salmons. And it has
worked on cantilever brakes for me.

"Eric S." <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

I've seen this problem mentioned elsewhere, but the suggested solution generally seems to include
toeing-in the brake shoes -- I don't believe this is an option for me as I have recent Ultegra
sidepull brakes.

I bought some Kool-Stop Dura-Type salmon pads to fix the problem Mike Jacoubowsky discusses here:
chainreaction.combrakeshoes.htmOpen ↗ (it seems like the local shops here in southern France
have bad batches of Dura-Ace pads, because this supposedly is no longer a problem with DA pads).

Anyway, while I had the grinding problem with the DA pads, they never screeched or squealed. The
Kool-Stops are great in every way except for the last few feet just as I'm coming to a stop, when
they screech something awful. They don't make any noise at all up until then.

When I installed them, I have to say I wondered if this would be a problem because the raised lip
at the back of the pad means the front of the pad hits the rim AFTER the back does, which I
understand to be a classic cause of noisy brakes.

I'm reluctant to sand that lip down because I don't want the grit from the sandpaper hanging
around to cause more destruction to my poor rims.

Any suggestions?

Tektro makes some nice replacement cartridge units that are Shimano cartridge compatible (and so
Koolstop too), that have an orbiting adjustment feature like Campagnolo and 2004 Dura Ace.
Inexpensive too.

--
Robin Hubert <[email hidden]

Or one good ride in the rain. This will surface the rims and your pads. Sand paper works fine on the
salmon colored pads, this thing about metal grits getting into the rim is plain BS. How often do you
ride, 10 miles a week? -tom

"Pete Biggs" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

To remove temporary squealing caused by oil on the rims, ride fast down a steep hill with the
brakes on!

~PB

"Phil, Squid-in-Training" <[email hidden]> wrote in message
news:<[email hidden]>...

Quoted message said:

Quoted message said:

Some people think that a stem that points up says "fred" and a stem that points down says
"racer"... even

Simply put, "dork" factor.

Yes, I think that is what the racer dude I smoked going uphill thought this morning as I passed him
with my upward pointed Forgie stem and wearing Shimano sandals and sporting a commute bag. He was at
least 25 years my junior, also.

Some try to look the part, others just do. Better to be comfortable and enjoy the ride than to look
cool and tortured ;-)

- rick

Tom Nakashima said:

Or one good ride in the rain. This will surface the rims and your pads. Sand paper works fine on
the salmon colored pads, this thing about metal grits getting into the rim is plain BS. How often
do you ride, 10 miles a week?

Who are you talking to and what are you talking about?

~PB