Finally shifted the seized seat post.

had to replace the saddle, so I put a few dabs of flour-emery powder on the
seat clamp. There was enough grip that I could get hold of the saddle and
twist the post out.

Now re assembled with copper slip anti seize compound.

On Sunday, October 8, 2017 at 12:56:21 PM UTC-7, Ian Field wrote:
had to replace the saddle, so I put a few dabs of flour-emery powder on the
seat clamp. There was enough grip that I could get hold of the saddle and
twist the post out.

Now re assembled with copper slip anti seize compound.

Nice! But copper?

On 10/9/2017 1:37 PM, Doug Landau wrote:
On Sunday, October 8, 2017 at 12:56:21 PM UTC-7, Ian Field wrote:
had to replace the saddle, so I put a few dabs of flour-emery powder on the
seat clamp. There was enough grip that I could get hold of the saddle and
twist the post out.

Now re assembled with copper slip anti seize compound.

Nice! But copper?


For a seat post, molybdenum base or copper base paste are fine.
The high temp aspect of copper is irrelevant but if that's
the can he has then that's the can he should use.

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971

On Monday, October 9, 2017 at 1:08:14 PM UTC-7, AMuzi wrote:
On 10/9/2017 1:37 PM, Doug Landau wrote:
On Sunday, October 8, 2017 at 12:56:21 PM UTC-7, Ian Field wrote:
had to replace the saddle, so I put a few dabs of flour-emery powder on the
seat clamp. There was enough grip that I could get hold of the saddle and
twist the post out.

Now re assembled with copper slip anti seize compound.

Nice! But copper?


For a seat post, molybdenum base or copper base paste are fine.
The high temp aspect of copper is irrelevant but if that's
the can he has then that's the can he should use.

It should be aluminum, to give up aluminum to the iron-aluminum reaction.

Good alt example...wheel. bearing grease

Auto (copper) bearing grease is higher temp faster Revis than bicycle bearings n does not spread on or before bearings as well as designed for bike grease

As said...you can see the difference

As with copper/Al

On Mon, 09 Oct 2017 15:08:12 -0500, AMuzi wrote:

On 10/9/2017 1:37 PM, Doug Landau wrote:
On Sunday, October 8, 2017 at 12:56:21 PM UTC-7, Ian Field wrote:
had to replace the saddle, so I put a few dabs of flour-emery powder
on the seat clamp. There was enough grip that I could get hold of the
saddle and twist the post out.

Now re assembled with copper slip anti seize compound.

Nice! But copper?


For a seat post, molybdenum base or copper base paste are fine.
The high temp aspect of copper is irrelevant but if that's the can he
has then that's the can he should use.

I understand the reason for lubing a seat post to be preventing
dissimilar metals such as aluminium post and steel frame tubes from
coming into contact and galling together. Does galvanic corrosion of the
aluminium with the copper element not cause problems?

--
davethedave

On Wed, 11 Oct 2017 07:31:06 -0000 (UTC), dave
wrote:

On Mon, 09 Oct 2017 15:08:12 -0500, AMuzi wrote:

On 10/9/2017 1:37 PM, Doug Landau wrote:
On Sunday, October 8, 2017 at 12:56:21 PM UTC-7, Ian Field wrote:
had to replace the saddle, so I put a few dabs of flour-emery powder
on the seat clamp. There was enough grip that I could get hold of the
saddle and twist the post out.

Now re assembled with copper slip anti seize compound.

Nice! But copper?


For a seat post, molybdenum base or copper base paste are fine.
The high temp aspect of copper is irrelevant but if that's the can he
has then that's the can he should use.

I understand the reason for lubing a seat post to be preventing
dissimilar metals such as aluminium post and steel frame tubes from
coming into contact and galling together. Does galvanic corrosion of the
aluminium with the copper element not cause problems?

It might. On the other hand most anti-seize mixes contain oil or
grease that probably insulate the copper particles from the aluminum
post or prevent the access of an electrolyte (water).
--
Cheers,

John B.

On Wednesday, October 11, 2017 at 12:31:09 AM UTC-7, davethedave wrote:
On Mon, 09 Oct 2017 15:08:12 -0500, AMuzi wrote:

On 10/9/2017 1:37 PM, Doug Landau wrote:
On Sunday, October 8, 2017 at 12:56:21 PM UTC-7, Ian Field wrote:
had to replace the saddle, so I put a few dabs of flour-emery powder
on the seat clamp. There was enough grip that I could get hold of the
saddle and twist the post out.

Now re assembled with copper slip anti seize compound.

Nice! But copper?


For a seat post, molybdenum base or copper base paste are fine.
The high temp aspect of copper is irrelevant but if that's the can he
has then that's the can he should use.

I understand the reason for lubing a seat post to be preventing
dissimilar metals such as aluminium post and steel frame tubes from
coming into contact and galling together. Does galvanic corrosion of the
aluminium with the copper element not cause problems?

By the best mechanic I ever new I was taught that you NEVER put lube on a seat post because it would cause it to slip at the tightest you could get it.. Having tried it I found him as usual to be completely correct. So I prevent problems by removing the aluminum post on the yearly service and making sure that everything is clean.

On 10/11/2017 2:31 AM, dave wrote:
On Mon, 09 Oct 2017 15:08:12 -0500, AMuzi wrote:

On 10/9/2017 1:37 PM, Doug Landau wrote:
On Sunday, October 8, 2017 at 12:56:21 PM UTC-7, Ian Field wrote:
had to replace the saddle, so I put a few dabs of flour-emery powder
on the seat clamp. There was enough grip that I could get hold of the
saddle and twist the post out.

Now re assembled with copper slip anti seize compound.

Nice! But copper?


For a seat post, molybdenum base or copper base paste are fine.
The high temp aspect of copper is irrelevant but if that's the can he
has then that's the can he should use.

I understand the reason for lubing a seat post to be preventing
dissimilar metals such as aluminium post and steel frame tubes from
coming into contact and galling together. Does galvanic corrosion of the
aluminium with the copper element not cause problems?


I can't speak to the chemistry of it but in practice both
molybdenum and copper based antiseize pastes work well for
seatposts and similar bicycle applications. For auto
exhaust systems, I use copper.

http://www.antiseize.com/Anti-Seize-Compounds

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971

"AMuzi" wrote in message
news
On 10/11/2017 2:31 AM, dave wrote:
On Mon, 09 Oct 2017 15:08:12 -0500, AMuzi wrote:

On 10/9/2017 1:37 PM, Doug Landau wrote:
On Sunday, October 8, 2017 at 12:56:21 PM UTC-7, Ian Field wrote:
had to replace the saddle, so I put a few dabs of flour-emery powder
on the seat clamp. There was enough grip that I could get hold of the
saddle and twist the post out.

Now re assembled with copper slip anti seize compound.

Nice! But copper?


For a seat post, molybdenum base or copper base paste are fine.
The high temp aspect of copper is irrelevant but if that's the can he
has then that's the can he should use.

I understand the reason for lubing a seat post to be preventing
dissimilar metals such as aluminium post and steel frame tubes from
coming into contact and galling together. Does galvanic corrosion of the
aluminium with the copper element not cause problems?


I can't speak to the chemistry of it but in practice both molybdenum and
copper based antiseize pastes work well for seatposts and similar bicycle
applications. For auto exhaust systems, I use copper.

my first tin of coppaslip after not having any for a while, was for fitting
a new motorcycle exhaust system - but it works very well for all sorts of
things on a bicycle.

Generally speaking; any corroded part that gives me trouble dismantling it -
gets Coppaslip in the way back.

The local bicycle shop *ADVISED* me to Coppaslip the threads on the type of
sprocket cassette that unscrews as a unit.