How long should caliper brake springs last?

On 2017-07-31 20:21, Frank Krygowski wrote:
On 7/31/2017 5:50 PM, sms wrote:
On 7/27/2017 6:40 PM, John B. Slocomb wrote:
On Thu, 27 Jul 2017 09:57:44 -0700, sms
wrote:

On 7/27/2017 7:08 AM, AMuzi wrote:

snip

In theory maybe but I've never seen that in real life. Rust is ugly
but
in terms of % reduction of cross section of a spring, it's
meaningless.

The spring is not rusty. But it pops out with no effort, it's just not
springy anymore. It seems to be fatigued.

The brake sets are cleaned and lubed. I may still order some springs to
use these brakes on another road bike which has lower quality
brakes. If
I were in Wisconsin, I'm sure that AMuzi would have the springs in
stock, but the shops in Silicon Valley have little interest in stocking
and selling little parts like this.


Probably because no one but you ever wanted to buy any :-(

Yet they are available online, so clearly someone has wanted them, and
there are instructions online that refer to the need to replace weak
springs.

There are? Where?


The springs? For example he

http://www.ebay.com/itm/NEW-Campagno...-/172611044107

Old American saying: If you don't take care of your customer somebody
else will.


AMuzi shows them he http://www.yellowjersey.org/dcbitz.html

By that argument, people must have to replace flat-concave mounting
washers too. Metal fatigue, is it?


Obviously Andrew does take care of his customers. Plus peobably a lot of
other people who were told by their LBS "Just buy a whole new brake".

--
Regards, Joerg

http://www.analogconsultants.com/

On Friday, August 4, 2017 at 12:18:03 PM UTC-7, Joerg wrote:
On 2017-07-31 20:21, Frank Krygowski wrote:
On 7/31/2017 5:50 PM, sms wrote:
On 7/27/2017 6:40 PM, John B. Slocomb wrote:
On Thu, 27 Jul 2017 09:57:44 -0700, sms
wrote:

On 7/27/2017 7:08 AM, AMuzi wrote:

snip

In theory maybe but I've never seen that in real life. Rust is ugly
but
in terms of % reduction of cross section of a spring, it's
meaningless.

The spring is not rusty. But it pops out with no effort, it's just not
springy anymore. It seems to be fatigued.

The brake sets are cleaned and lubed. I may still order some springs to
use these brakes on another road bike which has lower quality
brakes. If
I were in Wisconsin, I'm sure that AMuzi would have the springs in
stock, but the shops in Silicon Valley have little interest in stocking
and selling little parts like this.


Probably because no one but you ever wanted to buy any :-(

Yet they are available online, so clearly someone has wanted them, and
there are instructions online that refer to the need to replace weak
springs.

There are? Where?


The springs? For example he

http://www.ebay.com/itm/NEW-Campagno...-/172611044107

Old American saying: If you don't take care of your customer somebody
else will.


AMuzi shows them he http://www.yellowjersey.org/dcbitz.html

By that argument, people must have to replace flat-concave mounting
washers too. Metal fatigue, is it?


Obviously Andrew does take care of his customers. Plus peobably a lot of
other people who were told by their LBS "Just buy a whole new brake".

Who knows if one of the zillion shops in the Silicon Valley has an old Diacomp spring. I'm sure SMS hasn't called them all. There are old shops in the Valley that probably have that sort of thing hanging around -- PAB, Cupertino, Wheel-a-Way, etc., etc. George probably has one sitting around. https://www.yelp.com/biz/sloughs-bike-shoppe-san-jose

I don't fault any shop for not carrying a spring from a low-end, 30 year old brake. If I wanted a spring for my old Campy brakes (I don't since they're in a box -- all three pairs), I'd walk across the street from my neighborhood market. http://www.burlingamebikes.com/maintenance-repair/ I've never replaced a brake spring except on an old Paul NeoRetro. If I had a Diacomp, I'd go ratting through a box at the Community Cycling Center. http://tinyurl.com/y7d3tydt Start digging! Or maybe over at Citybikes. http://tinyurl.com/ybgsrz5m More digging! I refuse to believe SCV is the bicycle wasteland SMS claims it to be.

-- Jay Beattie.

On 2017-08-04 15:10, jbeattie wrote:
On Friday, August 4, 2017 at 12:18:03 PM UTC-7, Joerg wrote:
On 2017-07-31 20:21, Frank Krygowski wrote:
On 7/31/2017 5:50 PM, sms wrote:
On 7/27/2017 6:40 PM, John B. Slocomb wrote:
On Thu, 27 Jul 2017 09:57:44 -0700, sms
wrote:

On 7/27/2017 7:08 AM, AMuzi wrote:

snip

In theory maybe but I've never seen that in real life.
Rust is ugly but in terms of % reduction of cross section
of a spring, it's meaningless.

The spring is not rusty. But it pops out with no effort,
it's just not springy anymore. It seems to be fatigued.

The brake sets are cleaned and lubed. I may still order
some springs to use these brakes on another road bike which
has lower quality brakes. If I were in Wisconsin, I'm sure
that AMuzi would have the springs in stock, but the shops
in Silicon Valley have little interest in stocking and
selling little parts like this.


Probably because no one but you ever wanted to buy any :-(

Yet they are available online, so clearly someone has wanted
them, and there are instructions online that refer to the need
to replace weak springs.

There are? Where?


The springs? For example he

http://www.ebay.com/itm/NEW-Campagno...-/172611044107



Old American saying: If you don't take care of your customer somebody
else will.


AMuzi shows them he
http://www.yellowjersey.org/dcbitz.html

By that argument, people must have to replace flat-concave
mounting washers too. Metal fatigue, is it?


Obviously Andrew does take care of his customers. Plus peobably a
lot of other people who were told by their LBS "Just buy a whole
new brake".

Who knows if one of the zillion shops in the Silicon Valley has an
old Diacomp spring. I'm sure SMS hasn't called them all. There are
old shops in the Valley that probably have that sort of thing hanging
around -- PAB, Cupertino, Wheel-a-Way, etc., etc. George probably
has one sitting around.
https://www.yelp.com/biz/sloughs-bike-shoppe-san-jose

I don't fault any shop for not carrying a spring from a low-end, 30
year old brake. If I wanted a spring for my old Campy brakes (I
don't since they're in a box -- all three pairs), I'd walk across the
street from my neighborhood market.
http://www.burlingamebikes.com/maintenance-repair/ I've never
replaced a brake spring except on an old Paul NeoRetro. If I had a
Diacomp, I'd go ratting through a box at the Community Cycling
Center. http://tinyurl.com/y7d3tydt Start digging! Or maybe over
at Citybikes. http://tinyurl.com/ybgsrz5m More digging! I refuse to
believe SCV is the bicycle wasteland SMS claims it to be.


Also, a good bike shop isn't supposed to just say "Sorry, we don't have
it". They are supposed to say "We could search and possibly order it for
you but it wouldn't be very cheap". That's what my LBS did when I wanted
stanchion protectors for my MTB. "You want WHAT? Ok, I'll try to get
them for you" and he did.

--
Regards, Joerg

http://www.analogconsultants.com/

Sure. Springs pistons washeRS excess from the process

Diddle diddle

Tinker tinker

Which is cool ok learning what

Economically unsound

Unsound in trajectory

Replace unit

Assemble all unit parts , replace

The parts scene also tilts to racers where Part X is said to give more speed when new... ?

The idea yawl weenie hither n yon rebuilding a $20 unit with a $5 spring is nutty caws it's still a worn unit

On Friday, August 4, 2017 at 3:20:44 PM UTC-7, Joerg wrote:
On 2017-08-04 15:10, jbeattie wrote:
On Friday, August 4, 2017 at 12:18:03 PM UTC-7, Joerg wrote:
On 2017-07-31 20:21, Frank Krygowski wrote:
On 7/31/2017 5:50 PM, sms wrote:
On 7/27/2017 6:40 PM, John B. Slocomb wrote:
On Thu, 27 Jul 2017 09:57:44 -0700, sms
wrote:

On 7/27/2017 7:08 AM, AMuzi wrote:

snip

In theory maybe but I've never seen that in real life.
Rust is ugly but in terms of % reduction of cross section
of a spring, it's meaningless.

The spring is not rusty. But it pops out with no effort,
it's just not springy anymore. It seems to be fatigued.

The brake sets are cleaned and lubed. I may still order
some springs to use these brakes on another road bike which
has lower quality brakes. If I were in Wisconsin, I'm sure
that AMuzi would have the springs in stock, but the shops
in Silicon Valley have little interest in stocking and
selling little parts like this.


Probably because no one but you ever wanted to buy any :-(

Yet they are available online, so clearly someone has wanted
them, and there are instructions online that refer to the need
to replace weak springs.

There are? Where?


The springs? For example he

http://www.ebay.com/itm/NEW-Campagno...-/172611044107



Old American saying: If you don't take care of your customer somebody
else will.


AMuzi shows them he
http://www.yellowjersey.org/dcbitz.html

By that argument, people must have to replace flat-concave
mounting washers too. Metal fatigue, is it?


Obviously Andrew does take care of his customers. Plus peobably a
lot of other people who were told by their LBS "Just buy a whole
new brake".

Who knows if one of the zillion shops in the Silicon Valley has an
old Diacomp spring. I'm sure SMS hasn't called them all. There are
old shops in the Valley that probably have that sort of thing hanging
around -- PAB, Cupertino, Wheel-a-Way, etc., etc. George probably
has one sitting around.
https://www.yelp.com/biz/sloughs-bike-shoppe-san-jose

I don't fault any shop for not carrying a spring from a low-end, 30
year old brake. If I wanted a spring for my old Campy brakes (I
don't since they're in a box -- all three pairs), I'd walk across the
street from my neighborhood market.
http://www.burlingamebikes.com/maintenance-repair/ I've never
replaced a brake spring except on an old Paul NeoRetro. If I had a
Diacomp, I'd go ratting through a box at the Community Cycling
Center. http://tinyurl.com/y7d3tydt Start digging! Or maybe over
at Citybikes. http://tinyurl.com/ybgsrz5m More digging! I refuse to
believe SCV is the bicycle wasteland SMS claims it to be.


Also, a good bike shop isn't supposed to just say "Sorry, we don't have
it". They are supposed to say "We could search and possibly order it for
you but it wouldn't be very cheap". That's what my LBS did when I wanted
stanchion protectors for my MTB. "You want WHAT? Ok, I'll try to get
them for you" and he did.

SMS went in through the back door of a closed shop and talked to a mechanic who graciously sold him some nice Ultegra brakes for $50. That's a pretty good bike shop in my opinion. He probably could have haggled him down to $35 -- or simply walked away and gone to shop that was open. I don't expect much service from closed shops. Most of them just say "we're closed." They even have signs that say "closed." I've seen those.

-- Jay Beattie.

This long Enzoid

goo.gl/266vpB

On 8/4/2017 3:18 PM, Joerg wrote:
On 2017-07-31 20:21, Frank Krygowski wrote:
On 7/31/2017 5:50 PM, sms wrote:
On 7/27/2017 6:40 PM, John B. Slocomb wrote:
On Thu, 27 Jul 2017 09:57:44 -0700, sms
wrote:

On 7/27/2017 7:08 AM, AMuzi wrote:

snip

In theory maybe but I've never seen that in real life. Rust is ugly
but
in terms of % reduction of cross section of a spring, it's
meaningless.

The spring is not rusty. But it pops out with no effort, it's just not
springy anymore. It seems to be fatigued.

The brake sets are cleaned and lubed. I may still order some
springs to
use these brakes on another road bike which has lower quality
brakes. If
I were in Wisconsin, I'm sure that AMuzi would have the springs in
stock, but the shops in Silicon Valley have little interest in
stocking
and selling little parts like this.


Probably because no one but you ever wanted to buy any :-(

Yet they are available online, so clearly someone has wanted them, and
there are instructions online that refer to the need to replace weak
springs.

There are? Where?


The springs?

No, Joerg. The instructions.

Where are those instructions online that refer to the need to replace
weak springs.?


--
- Frank Krygowski

Try a rubber washer shim or plug insert or a fix to plunger

https://www.mcmaster.com/#rubber-plugs/=18svpmt

https://www.mcmaster.com/#aramid-washers/=18sw128

On Friday, August 4, 2017 at 11:26:30 PM UTC-4, wrote:
https://www.mcmaster.com/#aramid-washers/=18sw128

https://www.mcmaster.com/#standard-washers/=18t3zeg