Sheldon Brown's website question

I don't know it (sorry) but have you tried to start here:

sheldonbrown.comhub.htmlOpen ↗

and use the www.sheldonbrown.com Googleoid search tool at
the top of the page. The site is exceptionally well linked
together. I don't think it will take long to find an article
of interest.

Perhaps you meant the pages of articles broken down by type?
In the Googleoid search tool at the top of the page type
"index" and press the "enter" key. HTH.

Kirby.

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

Quoted message said:

One time I stumbled across a single page at his site that
had a large 'table of contents.' Seemed to list almost
every article broken down into various categories, etc.
Might have even had a brief summary of each article?

Anyone know the link? I can't find that page again.
Thanks.

Dan Daniel said:

One time I stumbled across a single page at his site that
had a large 'table of contents.' Seemed to list almost
every article broken down into various categories, etc.
Might have even had a brief summary of each article?

Maybe sheldonbrown.comarticles.htmlOpen ↗ ?

Dan Daniel said:

One time I stumbled across a single page at his site that
had a large 'table of contents.' Seemed to list almost
every article broken down into various categories, etc.
Might have even had a brief summary of each article?

Anyone know the link? I can't find that page again.
Thanks.

sheldonbrown.comarticlesOpen ↗

That page is also accessible via the alias:

captainbike.comcaptainbike.comOpen ↗

Another good way to find stuff on my site is to start at the
Bicycle Glossary...it has links to all of the articles.

sheldonbrown.comglossaryOpen ↗

Sheldon "Lynx" Brown +-----------------------------------------------------
+
| Oh, the cyclist and the runner should be friends, | Yes,
| the cyclist and the runner should be friends; | Some
| folks like to kick their heels, | Some folks like to spin
| their wheels, | But that's no reason why they can't be
| friends! |
| |
| Human-powered folks should stick together, | Non-
| polluting folks should get along; | If you agree with
| what I'm saying, | Won't you join me in my song? | --
| Rogers & Brown |
+-----------------------------------------------------+
Harris Cyclery, West Newton, Massachusetts Phone 617-244-
9772 FAX 617-244-1041 harriscyclery.comharriscyclery.comOpen ↗ Hard-to-find
parts shipped Worldwide captainbike.comcaptainbike.comOpen ↗
sheldonbrown.comsheldonbrown.comOpen ↗

Sheldon Brown said:

Dan Daniel said:

One time I stumbled across a single page at his site that
had a large 'table of contents.' Seemed to list almost
every article broken down into various categories, etc.
Might have even had a brief summary of each article?

Anyone know the link? I can't find that page again.
Thanks.

sheldonbrown.comarticlesOpen ↗

That's the one!!! Thanks. And thanks for the whole site. An
amazing collection and an amazing job.

Quoted message said:

That page is also accessible via the alias:

captainbike.comcaptainbike.comOpen ↗

Ah, maybe I got sent to this from a google search or
something.

Quoted message said:

Quoted message said:

One time I stumbled across a single page at his site
that had a large 'table of contents.' Seemed to list
almost every article broken down into various
categories, etc. Might have even had a brief summary of
each article? Anyone know the link? I can't find that
page again. Thanks.

sheldonbrown.comarticlesOpen ↗ That page is also
accessible via the alias: captainbike.comcaptainbike.comOpen ↗ Another
good way to find stuff on my site is to start at the
Bicycle Glossary...it has links to all of the articles.

I can't remember which page it's on, but it has a picture of
you pulling a rusty bicylce out of a river. Beside it, your
caption claims that you know why the tires on such a thing
are still inflated. Do explain.

Adam Rush said:

I can't remember which page it's on, but it has a picture
of you pulling a rusty bicylce out of a river. Beside it,
your caption claims that you know why the tires on such a
thing are still inflated. Do explain.

You're thinking of one of the photos on my personal
Bicycle Page:

sheldonbrown.orgbicycle.htmlOpen ↗

I'm not in the photo, I took it though, way back in the
(Yuck!) black and white era.

The explanation of the intact tire being still inflated was
that even with a slow leak, since the bike was under water,
the air could only leak out until the air pressure inside
equalled the water pressure outside.

Once the bike was dragged to the surface (by persons
unknown) the pressure in the tire was greater than
atmospheric pressure.

Felt like maybe 15-20 psi, which is consistent with the
river depth nearby.

Sheldon "Figured It Out" Brown +--------------------------------
+
| Happy Reynolds Day! (5/31) |
+--------------------------------+ Harris Cyclery, West
Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041
harriscyclery.comharriscyclery.comOpen ↗ Hard-to-find parts shipped
Worldwide captainbike.comcaptainbike.comOpen ↗ sheldonbrown.comsheldonbrown.comOpen ↗

Quoted post said:

Originally posted by Dan Daniel
One time I stumbled across a single page at his site that
had a large 'table of contents.' Seemed to list almost every
article broken down into various categories, etc. Might have
even had a brief summary of each article?

Anyone know the link? I can't find that page again. Thanks.

Please try this link below:

http://www.sheldonbrown.com/articles.html

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

Quoted message said:

Adam Rush said:

I can't remember which page it's on, but it has a
picture of you pulling a rusty bicylce out of a river.
Beside it, your caption claims that you know why the
tires on such a thing are still inflated. Do explain.

You're thinking of one of the photos on my personal
Bicycle Page:

sheldonbrown.orgbicycle.htmlOpen ↗

I'm not in the photo, I took it though, way back in the
(Yuck!) black and white era.

The explanation of the intact tire being still inflated
was that even with a slow leak, since the bike was under
water, the air could only leak out until the air pressure
inside equalled the water pressure outside.

Once the bike was dragged to the surface (by persons
unknown) the pressure in the tire was greater than
atmospheric pressure.

Felt like maybe 15-20 psi, which is consistent with the
river depth

nearby.

Quoted message said:

Sheldon "Figured It Out" Brown +--------------------------------
+
| Happy Reynolds Day! (5/31) |
+--------------------------------+ Harris Cyclery, West
Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041
harriscyclery.comharriscyclery.comOpen ↗ Hard-to-find parts shipped
Worldwide captainbike.comcaptainbike.comOpen ↗ sheldonbrown.comsheldonbrown.comOpen ↗

And because we know that 1 inch of water is 0.036127 PSI we
can work out that if the bike was retrieved with 20 PSI in
the tyres {and the tyres didn't lose a significant amount of
air after retreival} you can estimate the depth it was
submerged.

20 PSI divided by 0.036127 gives you 553 inches of water
or 46 feet!

Also, as the bike was hauled to the surface it would have
felt lighter because when the bike was lying on the bottom
of the river the tyres would have been "flat", that is, the
pressure the tyre inside would be the same as the pressure
outside. As the bike is hauled to the surface the pressure
outside the tyre decreases and the tyre"inflates",
displacing a larger volume of water.

Marty "Too much spare time" Wallace

On 05/31/2004 05:37 PM, in article
[email hidden], "Marty Wallace"

Quoted message said:

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

Quoted message said:

Adam Rush said:

I can't remember which page it's on, but it has a
picture of you pulling a rusty bicylce out of a river.
Beside it, your caption claims that you know why the
tires on such a thing are still inflated. Do explain.

You're thinking of one of the photos on my personal
Bicycle Page:

sheldonbrown.orgbicycle.htmlOpen ↗

I'm not in the photo, I took it though, way back in the
(Yuck!) black and white era.

The explanation of the intact tire being still inflated
was that even with a slow leak, since the bike was under
water, the air could only leak out until the air pressure
inside equalled the water pressure outside.

Once the bike was dragged to the surface (by persons
unknown) the pressure in the tire was greater than
atmospheric pressure.

Felt like maybe 15-20 psi, which is consistent with the
river depth

nearby.

Quoted message said:

Sheldon "Figured It Out" Brown +--------------------------------
+
| Happy Reynolds Day! (5/31) |
+--------------------------------+ Harris Cyclery, West
Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041
harriscyclery.comharriscyclery.comOpen ↗ Hard-to-find parts shipped
Worldwide captainbike.comcaptainbike.comOpen ↗ sheldonbrown.comsheldonbrown.comOpen ↗

And because we know that 1 inch of water is 0.036127 PSI
we can work out that if the bike was retrieved with 20 PSI
in the tyres {and the tyres didn't lose a significant
amount of air after retreival} you can estimate the depth
it was submerged.

20 PSI divided by 0.036127 gives you 553 inches of water
or 46 feet!

Also, as the bike was hauled to the surface it would have
felt lighter because when the bike was lying on the bottom
of the river the tyres would have been "flat", that is,
the pressure the tyre inside would be the same as the
pressure outside. As the bike is hauled to the surface the
pressure outside the tyre decreases and the
tyre"inflates", displacing a larger volume of water.

Marty "Too much spare time" Wallace

Try again:

atozdiving.co.nzwaterpressure.htmlOpen ↗

20 PSI occurs at 146.815 inches (12 feet, 2.815
inches) depth.

You forget that at in 0 inches of water the PSI is will
still be 1 atmosphere, or 14.6959 PSI.

--
Steven L. Sheffield stevens at veloworks dot com veloworks
at worldnet dot ay tea tee dot net bellum pax est libertas
servitus est ignoratio vis est ess ay ell tea ell ay kay ee
sea aye tee why you ti ay aitch aitch tee tea pea colon [for
word] slash [four ward] slash double-you double-yew double-
ewe dot veloworks dot com [four word] slash

Steven L. Sheffield said:

On 05/31/2004 05:37 PM, in article
[email hidden], "Marty
Wallace" <[email hidden]> wrote:

Quoted message said:

Quoted message said:

Quoted message said:

The explanation of the intact tire being still inflated
was that even with a slow leak, since the bike was under
water, the air could only leak out until the air pressure
inside equalled the water pressure outside.

Quoted message said:

Quoted message said:

And because we know that 1 inch of water is 0.036127 PSI
we can work out that if the bike was retrieved with 20 PSI
in the tyres {and the tyres didn't lose a significant
amount of air after retreival} you can estimate the depth
it was submerged.

20 PSI divided by 0.036127 gives you 553 inches of water
or 46 feet!

Also, as the bike was hauled to the surface it would have
felt lighter because when the bike was lying on the bottom
of the river the tyres would have been "flat", that is,
the pressure the tyre inside would be the same as the
pressure outside. As the bike is hauled to the surface the
pressure outside the tyre decreases and the
tyre"inflates", displacing a larger volume of water.

Quoted message said:

Try again:

atozdiving.co.nzwaterpressure.htmlOpen ↗

20 PSI occurs at 146.815 inches (12 feet, 2.815
inches) depth.

You forget that at in 0 inches of water the PSI is will
still be 1 atmosphere, or 14.6959 PSI.

No need for him to "try again" since Marty got it right the
first time. When we measure the pressure in a bike tire it's
really the "gauge pressure" that we're using - i.e. the
difference between the pressure inside the tire and
atmospheric pressure outside. So when Sheldon says the tires
had 20 psi, it means 20 psi above atmospheric; technically
20 psig (lbs per sq. in. gauge) which equals 34.7 psia (lbs
per sq. in. absolute). 20 psig occurs at a depth of just
over 46 feet of water.

On Tue, 1 Jun 2004 07:37:27 +0800, "Marty Wallace" <[email hidden]>

Quoted message said:

20 PSI divided by 0.036127 gives you 553 inches of water
or 46 feet!

Tube and tire permeability would result in an imperfect
pressure equalization; the tube would hold more pressure
than something with a gaping hole, although I suspect it
would equalize given a long enough period of time -- maybe
longer than the tube would last, though.
--
Rick Onanian

Quoted message said:

Quoted message said:

Quoted message said:

One time I stumbled across a single page at his site that
had a large 'table of contents.' Seemed to list almost
every article broken down into various categories, etc.
Might have even had a brief summary of each article?
Anyone know the link? I can't find that page again.
Thanks.

sheldonbrown.comarticlesOpen ↗ That page is also
accessible via the alias: captainbike.comcaptainbike.comOpen ↗ Another
good way to find stuff on my site is to start at the
Bicycle Glossary...it has links to all of the articles.

Adam Rush said:

I can't remember which page it's on, but it has a picture
of you pulling a rusty bicylce out of a river. Beside it,
your caption claims that you know why the tires on such a
thing are still inflated. Do explain.

Why shouldn't they be inflated?

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

Peter said:

Steven L. Sheffield said:

On 05/31/2004 05:37 PM, in article
[email hidden], "Marty
Wallace" <[email hidden]> wrote:

Quoted message said:

Quoted message said:

>The explanation of the intact tire being still inflated
>was that even with a slow leak, since the bike was under
>water, the air could only leak out until the air
>pressure inside equalled the water pressure outside.

Quoted message said:

Quoted message said:

And because we know that 1 inch of water is 0.036127 PSI
we can work out that if the bike was retrieved with 20
PSI in the tyres {and the tyres didn't lose a significant
amount of air after retreival} you can estimate the depth
it was submerged.

20 PSI divided by 0.036127 gives you 553 inches of water
or 46 feet!

Also, as the bike was hauled to the surface it would have
felt lighter because when the bike was lying on the
bottom of the river the tyres would have been "flat",
that is, the pressure the tyre inside would be the same
as the pressure outside. As the bike is hauled to the
surface the pressure outside the tyre decreases and the
tyre"inflates", displacing a larger volume of water.

Quoted message said:

Try again:

atozdiving.co.nzwaterpressure.htmlOpen ↗

20 PSI occurs at 146.815 inches (12 feet, 2.815
inches) depth.

You forget that at in 0 inches of water the PSI is will
still be 1 atmosphere, or 14.6959 PSI.

No need for him to "try again" since Marty got it right the
first time. When we measure the pressure in a bike tire
it's really the "gauge pressure" that we're using - i.e.
the difference between the pressure inside the tire and
atmospheric pressure outside. So when Sheldon says the
tires had 20 psi, it means 20 psi above atmospheric;
technically 20 psig (lbs per sq. in. gauge) which equals
34.7 psia (lbs per sq. in. absolute). 20 psig occurs at a
depth of just over 46 feet of water.

Dear Peter, Steven, and Marty,

Bah! You cowards can squabble about PSI to three, four, or
six decimal places and debate physics.

I intend to wait for a post from some hero who will rope his
wheel to a cinder block, drop it in the deep end of al
swimming pool with 100 psi in the tire right after sticking
a pin in it, and let us know next week how much air remains
after he fishes it up again.

(Actually, I find this absurdly fascinating.)

Carl Fogel

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

Quoted message said:

Peter said:

Steven L. Sheffield said:

On 05/31/2004 05:37 PM, in article
[email hidden],
"Marty Wallace" <[email hidden]> wrote:

Quoted message said:

>>The explanation of the intact tire being still
>>inflated was that even with a slow leak, since the
>>bike was under water, the air could only leak out
>>until the air pressure inside equalled the water
>>pressure outside.

Quoted message said:

>And because we know that 1 inch of water is 0.036127
>PSI we can work

out

Quoted message said:

Quoted message said:

Quoted message said:

>that if the bike was retrieved with 20 PSI in the tyres
>{and the tyres didn't lose a significant amount of air
>after retreival} you can

estimate

Quoted message said:

Quoted message said:

Quoted message said:

>the depth it was submerged.
>
>20 PSI divided by 0.036127 gives you 553 inches of
>water or 46 feet!
>
>Also, as the bike was hauled to the surface it would
>have felt lighter because when the bike was lying on
>the bottom of the river the tyres

would

Quoted message said:

Quoted message said:

Quoted message said:

>have been "flat", that is, the pressure the tyre inside
>would be the

same as

Quoted message said:

Quoted message said:

Quoted message said:

>the pressure outside. As the bike is hauled to the
>surface the pressure outside the tyre decreases and the
>tyre"inflates", displacing a larger volume of water.

Quoted message said:

Try again:

atozdiving.co.nzwaterpressure.htmlOpen ↗

20 PSI occurs at 146.815 inches (12 feet, 2.815 inches)
depth.

You forget that at in 0 inches of water the PSI is will
still be 1 atmosphere, or 14.6959 PSI.

No need for him to "try again" since Marty got it right
the first time. When we measure the pressure in a bike
tire it's really the "gauge pressure" that we're using -
i.e. the difference between the pressure inside the tire
and atmospheric pressure outside. So when Sheldon says
the tires had 20 psi, it means 20 psi above atmospheric;
technically 20 psig (lbs per sq. in. gauge) which equals
34.7 psia (lbs per sq. in. absolute). 20 psig occurs at a
depth of just over 46 feet of water.

Dear Peter, Steven, and Marty,

Bah! You cowards can squabble about PSI to three, four, or
six decimal places and debate physics.

I intend to wait for a post from some hero who will rope
his wheel to a cinder block, drop it in the deep end of al
swimming pool with 100 psi in the tire right after
sticking a pin in it, and let us know next week how much
air remains after he fishes it up again.

(Actually, I find this absurdly fascinating.)

Carl Fogel

Well when he dives in don't make him go too deep. When he
freedives to a depth of about 7 metres the air in his lungs
compresses sufficiently to make him lose buoyancy, (he
displaces less water) and looses his ability to float to the
surface. This is why if you want to dispose of a body in the
ocean or a lake, you should make sure it's in deep water,
otherwise it'll probably just bob back to the surface.

Cheers

Marty