Continental Carbon Black?

"Rima Neas" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Did they just re-discover carbon black? ...and is particle size relevant
when everything is melted, extruded, or otherwise bonded together?

Cheers, Shawn
---------------------------------------------------

Continental introduces Black Chili tread compound

The recent North American Handmade Bicycle Show was a bastion of tradition
and classic styling, but that didn't stop the folks from Continental from
showing off its new high-performance rubber compound dubbed Black Chili.

The new material incorporates rubber compound particles as small as 10nm

in

Quoted message said:

diameter (otherwise known as 0.00000001m, or really, really, really tiny),
or roughly ten times smaller than what is typically used. Continental

claims

Quoted message said:

that Black Chili delivers the ultimate combination of tire

characteristics:

Quoted message said:

the smaller particles yield more points of contact with the road surface
(offering enhanced grip), are more tightly bound to each other (reducing
wear), and the resultant structure is more flexible (lowering rolling
resistance).

Black Chili will find its way into both road and mountain tires, including
the Grand Prix 4000S (black tread only), Grand Prix Supersonic, Digga,
SpeedKing Supersonic, and Explorer Supersonic.

Are there potential respritory problems related to inhaling the micro
particles set free as a result of repeated severe breaking into corners on
an alpine descent?
Bill

Bill said:

"Rima Neas" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Continental introduces Black Chili tread compound

The recent North American Handmade Bicycle Show was a bastion of tradition
and classic styling, but that didn't stop the folks from Continental from
showing off its new high-performance rubber compound dubbed Black Chili.

The new material incorporates rubber compound particles as small as 10nm

Quoted message said:

Quoted message said:

the smaller particles yield more points of contact with the road surface
(offering enhanced grip),

Are there potential respritory problems related to inhaling the micro
particles set free as a result of repeated severe breaking into corners on
an alpine descent?
Bill

They have so much grip you won't need to brake for corners

Kinky Cowboy*

*Batteries not included
May contain traces of nuts
Your milage may vary

Bill said:

Are there potential respritory problems related to inhaling the micro
particles set free as a result of repeated severe breaking into corners on
an alpine descent?

The severe breaking occurs on the way /out/ of the corner, when your
exit tangent differs markedly from that of the road.

--
Home page: http://members.westnet.com.au/mvw

Rima Neas said:

Did they just re-discover carbon black? ...and is particle size relevant
when everything is melted, extruded, or otherwise bonded together?

Cheers, Shawn
---------------------------------------------------

Continental introduces Black Chili tread compound

The recent North American Handmade Bicycle Show was a bastion of tradition
and classic styling, but that didn't stop the folks from Continental from
showing off its new high-performance rubber compound dubbed Black Chili.

The new material incorporates rubber compound particles as small as 10nm in
diameter (otherwise known as 0.00000001m, or really, really, really tiny),
or roughly ten times smaller than what is typically used. Continental claims
that Black Chili delivers the ultimate combination of tire characteristics:
the smaller particles yield more points of contact with the road surface
(offering enhanced grip), are more tightly bound to each other (reducing
wear), and the resultant structure is more flexible (lowering rolling
resistance).

Black Chili will find its way into both road and mountain tires, including
the Grand Prix 4000S (black tread only), Grand Prix Supersonic, Digga,
SpeedKing Supersonic, and Explorer Supersonic.

For colored tires, they had to use something other than carbon
black..found that silica was slippery..back to the future.

Bill said:

"Rima Neas" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Did they just re-discover carbon black? ...and is particle size relevant
when everything is melted, extruded, or otherwise bonded together?

The only thing they're doing different is using smaller than normal
particles. But that's good enough for advertising.

Quoted message said:

Quoted message said:

---------------------------------------------------

Continental introduces Black Chili tread compound

The recent North American Handmade Bicycle Show was a bastion of tradition
and classic styling, but that didn't stop the folks from Continental from
showing off its new high-performance rubber compound dubbed Black Chili.

The new material incorporates rubber compound particles as small as 10nm

in

Quoted message said:

diameter (otherwise known as 0.00000001m, or really, really, really tiny),
or roughly ten times smaller than what is typically used. Continental

claims

Quoted message said:

that Black Chili delivers the ultimate combination of tire

characteristics:

Blah, blah, blah...

Quoted message said:

Are there potential respritory problems related to inhaling the micro
particles set free as a result of repeated severe breaking into corners on
an alpine descent?

One of the big hits against carbon black is that it may cause asthma in
heavily trafficked areas. Given the classical definition of "respirable
particles" is 1-10 micrometers, I'm not sure how to evaluate this latest
variation. If all the carbon black is, say, 10-100 nm (after all, it
does say "as small as 10 nm), making this the new standard in car tires
might be a good thing, as the smaller particles will not be trapped as
efficiently in the lungs, and exhaled.

But as far as air pollution from tires go, bicycle tires are so far down
in the noise as to be negligible. When the other 97% of traffic has 2-9
times as many tires, a whole lot larger, and driving (on average) many
times further than the bicycle traffic, you're not going to see any
change in air pollution profiles. Even in alpine areas.

Pat

Qui si parla Campagnolo said:

Rima Neas said:

Did they just re-discover carbon black? ...and is particle size relevant
when everything is melted, extruded, or otherwise bonded together?

Cheers, Shawn
---------------------------------------------------

Continental introduces Black Chili tread compound

The recent North American Handmade Bicycle Show was a bastion of tradition
and classic styling, but that didn't stop the folks from Continental from
showing off its new high-performance rubber compound dubbed Black Chili.

The new material incorporates rubber compound particles as small as 10nm in
diameter (otherwise known as 0.00000001m, or really, really, really tiny),
or roughly ten times smaller than what is typically used. Continental claims
that Black Chili delivers the ultimate combination of tire characteristics:
the smaller particles yield more points of contact with the road surface
(offering enhanced grip), are more tightly bound to each other (reducing
wear), and the resultant structure is more flexible (lowering rolling
resistance).

Black Chili will find its way into both road and mountain tires, including
the Grand Prix 4000S (black tread only), Grand Prix Supersonic, Digga,
SpeedKing Supersonic, and Explorer Supersonic.

For colored tires, they had to use something other than carbon
black..found that silica was slippery..back to the future.

that's not a good summary. it's more like silica costs more and
requires not just the silica, but organo-silanes to keep the rubber
together, both of which are a good deal more expensive than carbon &
rubber. silica reinforced rubber can offer the same dry traction as
carbon reinforced rubber, and better wet traction, both for lower
rolling resistance. the modern small particle carbon rubbers have
however done a lot to catch up [although they're not quite there], and
are cheaper - it's a price-competitive alternative.

jim beam said:

Qui si parla Campagnolo said:

Rima Neas said:

Did they just re-discover carbon black? ...and is particle size relevant
when everything is melted, extruded, or otherwise bonded together?

Quoted message said:

Quoted message said:

Cheers, Shawn
---------------------------------------------------

Quoted message said:

Quoted message said:

Continental introduces Black Chili tread compound

Quoted message said:

Quoted message said:

The recent North American Handmade Bicycle Show was a bastion of tradition
and classic styling, but that didn't stop the folks from Continental from
showing off its new high-performance rubber compound dubbed Black Chili.

Quoted message said:

Quoted message said:

The new material incorporates rubber compound particles as small as 10nm in
diameter (otherwise known as 0.00000001m, or really, really, really tiny),
or roughly ten times smaller than what is typically used. Continental claims
that Black Chili delivers the ultimate combination of tire characteristics:
the smaller particles yield more points of contact with the road surface
(offering enhanced grip), are more tightly bound to each other (reducing
wear), and the resultant structure is more flexible (lowering rolling
resistance).

Quoted message said:

Quoted message said:

Black Chili will find its way into both road and mountain tires, including
the Grand Prix 4000S (black tread only), Grand Prix Supersonic, Digga,
SpeedKing Supersonic, and Explorer Supersonic.

Quoted message said:

For colored tires, they had to use something other than carbon
black..found that silica was slippery..back to the future.

that's not a good summary. it's more like silica costs more and
requires not just the silica, but organo-silanes to keep the rubber
together, both of which are a good deal more expensive than carbon &
rubber. silica reinforced rubber can offer the same dry traction as
carbon reinforced rubber, and better wet traction, both for lower
rolling resistance. the modern small particle carbon rubbers have
however done a lot to catch up [although they're not quite there], and
are cheaper - it's a price-competitive alternative.- Hide quoted text -

- Show quoted text -

Achieving that balance between rolling resistance, wet traction and
wear in a bicycle tire using silica and special rubber compounds
seemed like a waste of time/money to me when carbon black had no real
drawbacks -- except, AFAIK, rolling resistance. It has better wear,
and I wonder if the improved rolling resistance using silica and
hard(er) rubber compounds really makes a difference in bike tires that
have thin casings, small foot prints, etc. I also wonder whether that
much care is taken in getting the balance just right in bicycle tires.
I have had some pretty slippery silica tires over the years (and,
actually, some carbon black tires that were not that grippy either).
-- Jay Beattie..