Titanium cogs spark when shifting

almost fast said:

I was watching the shifts on the trainer and noticed a
spark when the chain snapped past a tooth. Cog is titanium
(Dura-Ace 9s). Kinda cool!

Bet it was the gold "quick link" flashing in the...er,
fluorescent light.

Bill "either that or you REALLY spin" S.

almost fast said:

I was watching the shifts on the trainer and noticed a
spark when the chain snapped past a tooth. Cog is titanium
(Dura-Ace 9s). Kinda cool!

That would almost make time spent on the hamster wheel
worthwile -- almost. Wonder if Shimano will begin to
recommend a frame mounted fire extinguisher for Dura-Ace
use indoors.

Tom

no, i've seen these cogs spark too. i do a bit of night
riding in the winter and i watched a friend mash a shift
on a grade. it's not like a shower of sparks, but
definitely a strike.

if it's a shimano chain, it reinforces sheldon's advice
about pushing the rivet in from the left, not the right so
the slightly protuberant broken side of the rivet does not
cause any issues, this being one.

S o r n i said:

almost fast said:

I was watching the shifts on the trainer and noticed a
spark when the chain snapped past a tooth. Cog is titanium
(Dura-Ace 9s). Kinda cool!

Bet it was the gold "quick link" flashing in the...er,
fluorescent light.

Bill "either that or you REALLY spin" S.

tcmedara said:

That would almost make time spent on the hamster wheel
worthwile --

almost.

Quoted message said:

Wonder if Shimano will begin to recommend a frame
mounted fire

extinguisher

Quoted message said:

for Dura-Ace use indoors.

Yes, but they will insist that only a genuine Shimano fire
extinguisher will work.

Art Harris

"Arthur Harris" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

tcmedara said:

That would almost make time spent on the hamster wheel
worthwile --

almost.

Quoted message said:

Wonder if Shimano will begin to recommend a frame
mounted fire

extinguisher

Quoted message said:

for Dura-Ace use indoors.

Yes, but they will insist that only a genuine Shimano fire
extinguisher

will

Quoted message said:

work.

Art Harris

found this on the shimano website.

"Older Shimanoâ fire extinguishers will not be able to put
out fires on the 2004 Shimanoâ groupset. To put out fires on
the 2004 groupset owners must buy the 2004 model. A nozzle
upgrade kit is available to make the Shimanoâ 2003
extinguisher compatible with 2004 Shimanoâ fires. Shimanoâ
2004 fire extinguishers are not backwards compatible with
older Shimanoâ fires. Shimanoâ fires can only be put out
with genuine Shimanoâ fire extinguishers. Advanced testing
by some of the worlds top cyclists in the tough arena of the
Tour de France means that your Shimanoâ fire extinguisher
will work on the most demanding wind trainer."

Marty

"Marty Wallace" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

"Arthur Harris" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

tcmedara said:

That would almost make time spent on the hamster wheel
worthwile --

almost.

Quoted message said:

Wonder if Shimano will begin to recommend a frame
mounted fire

extinguisher

Quoted message said:

for Dura-Ace use indoors.

Yes, but they will insist that only a genuine Shimano
fire extinguisher

will

Quoted message said:

work.

Art Harris

found this on the shimano website.

"Older Shimanoâ fire extinguishers will not be able to put
out fires on

the

Quoted message said:

2004 Shimanoâ groupset. To put out fires on the 2004
groupset owners must buy the 2004 model. A nozzle upgrade
kit is available to make the Shimanoâ 2003 extinguisher
compatible with 2004 Shimanoâ fires. Shimanoâ 2004 fire
extinguishers are not backwards compatible with older
Shimanoâ fires. Shimanoâ fires can only be put out with
genuine Shimanoâ fire

extinguishers.

Quoted message said:

Advanced testing by some of the worlds top cyclists in the
tough arena of the Tour de France means that your Shimanoâ
fire extinguisher will work on the most demanding wind
trainer."

Marty

When you see the funny "a" with a hat on, that's meant to be
a Registered symbol. It didn't work to well when I cut and
pasted it from the Shimano website.

Regards

Marty

"Marty Wallace" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

When you see the funny "a" with a hat on, that's meant to
be a Registered symbol. It didn't work to well when I cut
and pasted it from the Shimano website.

That's because this is not an Official Shimano Approved
Newsgroup.

almost fast said:

I was watching the shifts on the trainer and noticed a
spark when the chain snapped past a tooth. Cog is titanium
(Dura-Ace 9s). Kinda cool!

That's strange, because titanium is known for not sparking.
I've been told by an engineer that in combustible-gas
applications (like working around jet fuel tanks) many
technicians are required to use either brass or titanium. He
had to buy special titanium crowbars for such an application
(he was working with highly combustible chemical batteries).

Could it be hitting anything else on the drivetrain?

Collin ([email hidden]) wrote:
: almost fast wrote:
:> I was watching the shifts on the trainer and noticed a
:> spark when the chain snapped past a tooth. Cog is
:> titanium (Dura-Ace 9s). Kinda cool!
:
: That's strange, because titanium is known for not
: sparking. I've been told by an engineer that in combustible-
: gas applications (like working around jet fuel tanks) many
: technicians are required to use either brass or titanium.
: He had to buy special titanium crowbars for such an
: application (he was working with highly combustible
: chemical batteries).
:
: Could it be hitting anything else on the drivetrain?

FWIW, titanium golf clubs make sparks when they hit
grains of sand.

--
rec-sport-golf.comrec-sport-golf.comOpen ↗ Please remove the
under_scores if sending me mail.

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

Quoted message said:

almost fast said:

I was watching the shifts on the trainer and noticed a
spark when the chain snapped past a tooth. Cog is
titanium (Dura-Ace 9s). Kinda cool!

That's strange, because titanium is known for not
sparking. I've been told by an engineer that in combustible-
gas applications (like working around jet fuel tanks) many
technicians are required to use either brass or titanium.
He had to buy special titanium crowbars for such an
application (he was working with highly combustible
chemical batteries).

Could it be hitting anything else on the drivetrain?

Actually, titanium is known for giving off big, fat sparks
when contacted hard- so much so that people use ti blocks on
the bottom of cars as scrape plates with the intention of
getting just that effect, (now, why would one want big
sparks flying off the bottom of their car? Got me on that
one...). On the other hand, I don't think that all the cogs
on a stock 9 are ti.

Not correct - the shower of sparks seen when the bottom of a
Formula type sports car rubs on the pavement is from the
titanium rub strips used to protect the carbon fiber tub.

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

Quoted message said:

almost fast said:

That's strange, because titanium is known for not
sparking.

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

Quoted message said:

almost fast said:

I was watching the shifts on the trainer and noticed a
spark when the chain snapped past a tooth. Cog is
titanium (Dura-Ace 9s). Kinda cool!

That's strange, because titanium is known for not
sparking. I've been told by an engineer that in combustible-
gas applications (like working around jet fuel tanks) many
technicians are required to use either brass or titanium.
He had to buy special titanium crowbars for such an
application (he was working with highly combustible
chemical batteries).

Could it be hitting anything else on the drivetrain?

As I cogitate further on this matter (over a cup of
columbias finest, of course), it occurs to me that using ti
as a non-sparking tool may have to do with the temp. and
duration of the spark created. So using ti pucks on a
crotchrocket jockeys knees results in a satisfying fireworks
display of low-temp sparks less likely to ignite vapors than
that of some other metals.

Too..much..caffeine..must ride now or risk spontaneous self-
combustion..

allen said:

"Collin" <[email hidden]> wrote in message news:eQIuc.-
[email hidden]...

Quoted message said:

almost fast said:

I was watching the shifts on the trainer and noticed a
spark when the chain snapped past a tooth. Cog is
titanium (Dura-Ace 9s). Kinda cool!

That's strange, because titanium is known for not
sparking. I've been told by an engineer that in combustible-
gas applications (like working around jet fuel tanks) many
technicians are required to use either brass or titanium.
He had to buy special titanium crowbars for such an
application (he was working with highly combustible
chemical batteries).

Could it be hitting anything else on the drivetrain?

As I cogitate further on this matter (over a cup of
columbias finest, of course), it occurs to me that using
ti as a non-sparking tool may have to do with the temp.
and duration of the spark created. So using ti pucks on a
crotchrocket jockeys knees results in a satisfying
fireworks display of low-temp sparks less likely to ignite
vapors than that of some other metals.

Too..much..caffeine..must ride now or risk spontaneous self-
combustion..

It seems I never go the full story on this one.
Nevertheless, it would be cool to have sparking cassette -
good for those night rides!

almost fast aka Real Slow said:

I was watching the shifts on the trainer and noticed a
spark when the chain snapped past a tooth. Cog is titanium
(Dura-Ace 9s). Kinda cool!

Well the sparks didn't come from the titanium. Adjustable
and fixed wrenches, screwdrivers, and other tools used
around combustible gas applications are made of titanium to
prevent ignition by sparks.

There is an explanation, but titanium sparking is out.

Jobst Brandt [email hidden]

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

Quoted message said:

almost fast aka Real Slow said:

I was watching the shifts on the trainer and noticed a
spark when the chain snapped past a tooth. Cog is
titanium (Dura-Ace 9s). Kinda cool!

Well the sparks didn't come from the titanium. Adjustable
and fixed wrenches, screwdrivers, and other tools used
around combustible gas applications are made of titanium
to prevent ignition by sparks.

There is an explanation, but titanium sparking is out.

Jobst Brandt [email hidden]

Well, actually..

ccohs.canonspaOpen ↗
rking.html

seems to have a differing opinion..

Otherwise, somebodies a'gittin ripped off buying these...

sportsbikeshop.co.ukcontent pOpen ↗
rod/18/208

In fact, it seems possible that using ti cogs in conjunction
with an exceptionally rusty chain could result in an massive
discharge, capable of blowing the rider right off the bike.

(O.K., I made that part up.)

Drat, now I know much more than I intended in the first place-
more wasted memory storage..I'll compensate by forgetting to
go to work tomorrow.

Allen None said:

Quoted message said:

Quoted message said:

I was watching the shifts on the trainer and noticed a
spark when the chain snapped past a tooth. Cog is
titanium (Dura-Ace 9s). Kinda cool!

Quoted message said:

Quoted message said:

Well the sparks didn't come from the titanium. Adjustable
and fixed wrenches, screwdrivers, and other tools used
around combustible gas applications are made of titanium
to prevent ignition by sparks.

Quoted message said:

Quoted message said:

There is an explanation, but titanium sparking is out.

Quoted message said:

Well, actually..

ccohs.canonspaOpen ↗
rking.html

Quoted message said:

seems to have a differing opinion...

They don't say much about titanium on that web site.
However, since hydrogen is used at Stanford Linear
Accelerator, they have yellow tint colored titanium wrenches
to connect the stainless steel plumbing. I think these
physicists along with those at other physics laboratories
know that there are benefits in anti-spark tools. Striking
them against each other is not the sound of tool steel on
tool steel, but rather a bit dull.

Quoted message said:

Otherwise, somebodies a'gittin ripped off buying these...

Quoted message said:

sportsbikeshop.co.ukcontentOpen ↗
prod/18/208

I suspect that the term titanium is in that product name
to give it a lively spin rather than that the devices
are actually titanium. On the other hand, it seems the
sparks must be coming from the pavement rather than the
metal if at all.

Quoted message said:

In fact, it seems possible that using ti cogs in
conjunction with an exceptionally rusty chain could result
in an massive discharge, capable of blowing the rider
right off the bike.

I think you should take that up with the manufacturers of
these tools and explain the error of their ways. This is not
a new technology.

Jobst Brandt [email hidden]

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

Quoted message said:

Allen None said:

Quoted message said:

> I was watching the shifts on the trainer and noticed a
> spark when the chain snapped past a tooth. Cog is
> titanium (Dura-Ace 9s). Kinda cool!

Quoted message said:

Quoted message said:

Well the sparks didn't come from the titanium.
Adjustable and fixed wrenches, screwdrivers, and other
tools used around combustible gas applications are made
of titanium to prevent ignition by sparks.

Quoted message said:

Quoted message said:

There is an explanation, but titanium sparking is out.

Quoted message said:

Well, actually..

ccohs.canonsOpen ↗
parking.html

Quoted message said:

seems to have a differing opinion...

They don't say much about titanium on that web site.

They say, " "Non-sparking", "spark-resistant" or "spark-
proof" tools are names given to tools made of metals such as
brass, bronze, Monel metal (copper-nickel alloy), copper-
aluminum alloys (aluminum bronze), copper-beryllium alloys
(beryllium bronze), and titanium."

And then go on with, " The name "non-sparking" is
misleading because these tools are capable of producing a
spark: the term "reduced-sparking tools" better describes
these tools. "

Quoted message said:

Quoted message said:

Otherwise, somebodies a'gittin ripped off buying
these...

Quoted message said:

sportsbikeshop.co.ukcontenOpen ↗
t_prod/18/208

I suspect that the term titanium is in that product name
to give it a lively spin rather than that the devices are
actually titanium.

A bit o' reading shows these advertised as being " encased
in a shroud of pure Titanium". Thats one nasty piece of
false advertising if you're right. However, a quick web
search shows ti used in similar apps, such as sparkers for
low riders, (weird world isn't it?)

On

Quoted message said:

the other hand, it seems the sparks must be coming from
the pavement rather than the metal if at all.

Well, yes. You see, the reason you need reduced sparking
tools in a volatile environment isn't to stop the dread
phenomena of spotaneous sparkage (as a side note: this was a
frequent occurence at Dead shows..), it's to limit the spark
that occurs when objects come into contact, ie, ti cog plus
chain, or knee puck and asphalt. Sooo, since we're not
talking about electrical discharge here, whether the ti cog
is tossing out tiny chunks of his chain, or vise-versa, just
as the ti-pucks are flinging off burning little bits of
asphalt, sparkage is done happenin'.

Quoted message said:

I think you should take that up with the manufacturers of
these tools and explain the error of their ways. This is
not a new technology.

Perhaps they should actually be selling the tools as
"reduced spark" technology. Maybe its the whole new crusade
that could really give Nader a chance at the presidency this
time around. Or..maybe not.

Quoted message said:

Allen None said:

Quoted message said:

>I was watching the shifts on the trainer and noticed a
>spark when the chain snapped past a tooth. Cog is
>titanium (Dura-Ace 9s). Kinda cool!

Quoted message said:

Quoted message said:

Well the sparks didn't come from the titanium. Adjustable
and fixed wrenches, screwdrivers, and other tools used
around combustible gas applications are made of titanium
to prevent ignition by sparks.

Quoted message said:

Quoted message said:

There is an explanation, but titanium sparking is out.

Quoted message said:

Well, actually..

ccohs.canonsOpen ↗
parking.html

Quoted message said:

seems to have a differing opinion...

They don't say much about titanium on that web site.
However, since hydrogen is used at Stanford Linear
Accelerator, they have yellow tint colored titanium
wrenches to connect the stainless steel plumbing. I think
these physicists along with those at other physics
laboratories know that there are benefits in anti-spark
tools. Striking them against each other is not the sound
of tool steel on tool steel, but rather a bit dull.

Quoted message said:

Otherwise, somebodies a'gittin ripped off buying these...

Quoted message said:

sportsbikeshop.co.ukcontentOpen ↗
prod/18/208

I suspect that the term titanium is in that product name
to give it a lively spin rather than that the devices
are actually titanium. On the other hand, it seems the
sparks must be coming from the pavement rather than the
metal if at all.

Quoted message said:

In fact, it seems possible that using ti cogs in
conjunction with an exceptionally rusty chain could result
in an massive discharge, capable of blowing the rider
right off the bike.

I think you should take that up with the manufacturers of
these tools and explain the error of their ways. This is
not a new technology.

Jobst Brandt [email hidden]

Try Googling "titanium sparks" or some similar search
phrase.

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

Quoted message said:

almost fast aka Real Slow said:

I was watching the shifts on the trainer and noticed a
spark when the chain snapped past a tooth. Cog is
titanium (Dura-Ace 9s). Kinda cool!

Well the sparks didn't come from the titanium. Adjustable
and fixed wrenches, screwdrivers, and other tools used
around combustible gas applications are made of titanium
to prevent ignition by sparks.

There is an explanation, but titanium sparking is out.

Jobst Brandt [email hidden]

We use non-sparking tools for working with hydrogen but they
have a bronze colour. They're definitely much harder and
stronger than bronze. Are you sure the titanium isn't
alloyed with something to take the spark out of it?

Marty