On Jan 8, 8:25*pm, "ARW" wrote:
dennis@home wrote:
On 08/01/2013 19:19, polygonum wrote:

Last puncture (more like a complete shredding) was on a *very* steep
hill, an extremely narrow road, and nowhere an ordinary jack could
be located (ground unsuitable and car too heavy to move). So having
a spare wheel only became useful when a recovery service came out
with a suitable jack. 10 or 20 minutes was actually more like an
hour or two.

Tyre shredded too much to drive to somewhere suitable?

My last puncture was in the roadworks on the M6 in rush hour.
I just decided it wasn't worth trying to save the tyre and drove to
the end where I could get on the hard shoulder and then got the AA to
change it.

I think the hundreds of motorists that i saved from an hours delay
should have bought me a new tyre. *;-)

How much are you paying for the tyres for your Astra?

--
Adam

Red Astra? Heh Heh.

On Jan 8, 11:13*pm, SteveW wrote:
On 08/01/2013 15:54, The Natural Philosopher wrote:









On 08/01/13 15:45, charles wrote:
In article , Muddymike
wrote:
"whisky-dave" *wrote in message
...

On Tuesday, January 8, 2013 10:48:59 AM UTC, Tim Watts wrote:
On Tuesday 08 January 2013 01:54 brass monkey wrote in uk.d-i-y:

WTF is a spare wheel?

A useful thing cars used to have...

But just how useful, sure on cars where it was needed but on todays
cars. Do you remmeber the days when you had to have someone walk in
front of your car carry/waving a flag. They were necessary too in them
days. ;-)

So what do you do when you get a puncture miles from anywhere with no
mobile telephone signal?

Wait for someone to pass by. *But seriously, how often have you had a
puncture in the last few years? *In the 60s, I used to have them
regularly.
* My current car - 11 years old - has only needed me to fit the spare
once
in 114,000 miles.

Only tow time sin the last ten years were a potho9le - only a mile from
home, drive it ion the flat. Wheel was destroyed anyway.

Then a 'Green' couple stuck a knife in the sidewall of the land rover.

Had to change the wheel and get a new one fitted.

That is essentially it.

few slow punctures - that's the pint - a tubeless tyre with a nail in it
doesn't go down instantly. It takes a knife or a pothole to do that.

Time to get it pumped up and take to the nearest tyre fitter.

There are plenty of potholes!

I have also been driving or a passenger in cars (with tubeless tyres)
when all of the following have happened: had a tyre wrecked by hitting a
dark hose off a tanker, with a nice metal end; driven over the remains
of an entire box of nails that had fallen off a truck (luckily
puncturing one rear tyre badly and missing the other three, plus the two
caravan tyres - especially as we were hurrying back for a ferry home);
had a blowout on the motorway; come back to the car miles from home at
two in the morning and found a flat tyre with a large bolt through it;
similarly with a screw at home when setting out for work. In all cases a
quick wheel change with no more than 15 minutes delay - at least half
would not be "fixable" with the modern foam emergency repair, causing
unnecessary delay, frustration and extra cost (missed ferry, late for
work, etc.)

The modern trend for no spare is very poor.

SteveW

At least one car I am thinking of buying has two wheel sizes.

On Jan 8, 11:51*pm, charles wrote:
In article
,
* *harry wrote:

On Jan 8, 3:50 pm, Grimly Curmudgeon wrote:
On Mon, 7 Jan 2013 23:31:11 -0800 (PST), harry

wrote:
At one time you had to carry many tires and tyre levers.
I expect these people thought the end of the world was nigh when spare
wheels were invented.

If you're going to try to make a point, at least make sure the point
actually exists.
In days of yore, tyres were so poor that most cars carried several
spare tyres plus of course a chauffeur to change them.

The chauffeur's job was to heat the engine before the owner wanted to use
to ensure it started. *It's a French word, btw.

--
From KT24

Using a RISC OS computer running v5.18

all these *eur words are, aren't they?
And the *euse words

On 08/01/2013 23:51, charles wrote:
In article
,
harry wrote:
On Jan 8, 3:50 pm, Grimly Curmudgeon wrote:
On Mon, 7 Jan 2013 23:31:11 -0800 (PST), harry

wrote:
At one time you had to carry many tires and tyre levers.
I expect these people thought the end of the world was nigh when spare
wheels were invented.

If you're going to try to make a point, at least make sure the point
actually exists.

In days of yore, tyres were so poor that most cars carried several
spare tyres plus of course a chauffeur to change them.

The chauffeur's job was to heat the engine before the owner wanted to use
to ensure it started. It's a French word, btw.

And in days before that, it was to sit on the bog seat to warm that up
before lord and master wanted to use it. 'Struth some of those older
seat had a huge thermal capacity...


[This is entirely made up. But used to be a 'punishment' ordered by
older boys on younger ones, at least during the coldest parts of the
year. The bogs were unheated. No idea if that was a widespread thing or
specific to my school?]

--
Rod

On 09/01/2013 07:22, harry wrote:
On Jan 8, 11:51 pm, charles wrote:
In article
,
harry wrote:

On Jan 8, 3:50 pm, Grimly Curmudgeon wrote:
On Mon, 7 Jan 2013 23:31:11 -0800 (PST), harry

wrote:
At one time you had to carry many tires and tyre levers.
I expect these people thought the end of the world was nigh when spare
wheels were invented.

If you're going to try to make a point, at least make sure the point
actually exists.
In days of yore, tyres were so poor that most cars carried several
spare tyres plus of course a chauffeur to change them.

The chauffeur's job was to heat the engine before the owner wanted to use
to ensure it started. It's a French word, btw.


all these *eur words are, aren't they?
And the *euse words

No.
Feur.
Reuse.

--
Rod

On Tue, 8 Jan 2013 23:16:09 -0800 (PST), harry wrote:

At least one car I am thinking of buying has two wheel sizes.

Penny Farthing? B-)

I wouldn't knowingly buy a car without a fullsized spare. A full sized
spare and only marginally different wheel sizes might have caught me out
but not now. For a short "get you going to a tyre shoppe" slightly
different wheel sizes wouldn't matter.

--
Cheers
Dave.

On Wed, 9 Jan 2013 02:32:16 -0000, Arfa Daily wrote:

We had this bit of kit called 'Spacegraph' that produced a true
'holographic' 3D image that floated in space in front of your face. It
was a truly remarkable system, but was very expensive, and was a
solution looking for a problem, really.

Time to resurect it for 3D telly? The current flat screen and glasses
doesn't seem to be taking off in any big way.

--
Cheers
Dave.

"Dave Liquorice" wrote in message
ll.co.uk...
On Tue, 8 Jan 2013 23:16:09 -0800 (PST), harry wrote:

At least one car I am thinking of buying has two wheel sizes.

Penny Farthing? B-)

I wouldn't knowingly buy a car without a fullsized spare. A full sized
spare and only marginally different wheel sizes might have caught me out
but not now. For a short "get you going to a tyre shoppe" slightly
different wheel sizes wouldn't matter.

It would if you drive far when they are shut.

That .. Ought to be part of the driving test. A simple job that every

driver, unless of course physically disabled from doing so, should have

that competency......

I can't agree with that, far too risky to have someone try to replace a car
wheel perhaps 5 years after they've past their test, and onn a differnt car
fromn their test car.

I can agree with it and they ought to make basic car maintenance
essential too. Wouldn't hurt at all.

Like where to put the Oil and Water in a car engine and where other
things go. Its quite basic, like how to check tyre pressures.

I had a young lad ask me at the local petrol station how you used the
air line and what pressure his tyres should be!.

He couldn't, nay did not, have any idea at all on how to convert bar to
PSI!..

Its not rocket science and for one if you were caught driving around on
under inflated or defective tyres its your licence that gets the pain
let alone any other grief you might encounter or what others might.

The driving test is "Far" too easy, all people want to do is to spend as
little as possible on lessons get as little practice just to get their
"ticket" ..

While we're at it compulsory driving tests every three years past the
age of say 65. Where would be the harm in that?..

Course the government would be so lily liveried they'd never do it....
--
Tony Sayer

In article om,
dennis@home scribeth thus
On 08/01/2013 14:29, tony sayer wrote:
In article om,
dennis@home scribeth thus
On 08/01/2013 09:27, tony sayer wrote:
OK - TV's have always been specialist - but most other machinery was
pretty
simple.


I dont think TVs were THAT specialist when they were full o' valves


Now this is a good point. A TV of say 1960 or even earlier had pretty
straightforward circuitry so much so that I managed to convert a 1960's
era 405 line set to 625 lines and it worked very well.

Course these days a few chipset's and well, what can you do with
those?...




Reprogram them, put a different OS on, change the jumpers, quite a lot
if you want on most modern sets.


Can you give us an example as to say how you'd change the sound
intercarrier ?...

Or the vision modulation demodulation?..

Would you give an example of which chipset you need instructions for.
You could always choose one with a DSP that you know how to use so you
needn't ask questions that you aren't going to get an answer to.
Who knows? you may even be able to emulate a service remote and change
them to what you want with ease.

Which just shows how totally ignorant you are with TV now Denise.

None of this is now done anymore, intercarrier sound and vision
modulation of carriers..

Analogue TV has now gone out of fashion..








However its not really worth it as you can probably buy something that
does what you want for peanuts.

Well what would be the point of that ?..


What would be the point of not doing so if you want a particular function?


Do you really want me to ask that question of you;?..
--
Tony Sayer

On Wed, 9 Jan 2013 09:58:05 +0000, tony sayer wrote:

He couldn't, nay did not, have any idea at all on how to convert bar to
PSI!..

TBH I'd have to go back to first principles and I'm not certain what a
"bar" actually is, 1 newton/square meter, naw that's way to small... kilo
newton/square meter? But even then I don't know the exact conversion
factor for kgf to pounds, it's about 2.2 but is that good enough?

The driving test is "Far" too easy, all people want to do is to spend
as little as possible on lessons get as little practice just to get
their "ticket" ..

Hasn't that always been the case? The new hazard awareness stuff must be
a bonus but they ought to have practical motorway driving included. Like
how to join one...

While we're at it compulsory driving tests every three years past the
age of say 65. Where would be the harm in that?..

Personally I think there ought to be a compulsory test for all drivers
every 5 years. Not a full blown one but something telling and testing on
legislation changes, eye sight, and a driving simulator measuring
reaction times and peripheral vision.

Course the government would be so lily liveried they'd never do it....

Agreed. Around 7 people *a day* are killed on UK roads and many more
injured. Some MP's daughter gets killed by electrickery due to the
incompetence of a professional and a whole raft of restrictive
legislation is dumped on the rest of us.

--
Cheers
Dave.

On Tue, 08 Jan 2013 21:17:47 +0000, Andy Champ wrote:

In 1970 you _had_ to be able to open your car bonnet and identify
everything because it _would_ break down. I used to carry a toolbox in
my first car, this one... well, I once had to get a jump-start, followed
swiftly (that day) by a new battery.

I take it you had an English car ?

In message , tony sayer
writes
The driving test is "Far" too easy, all people want to do is to spend as
little as possible on lessons get as little practice just to get their
"ticket" ..

While we're at it compulsory driving tests every three years past the
age of say 65. Where would be the harm in that?..

Course the government would be so lily liveried they'd never do it....

Oi! That's me you are talking about.

Eyesight and health rather different matters. Before issuing a shotgun
permit the Police invite comment from my GP. This could easily be
extended to my optician.

Otherwise, what aspect of my driving are you concerned about?

--
Tim Lamb

In article o.uk,
Dave Liquorice wrote:
TBH I'd have to go back to first principles and I'm not certain what a
"bar" actually is, 1 newton/square meter, naw that's way to small...
kilo newton/square meter? But even then I don't know the exact
conversion factor for kgf to pounds, it's about 2.2 but is that good
enough?

It's 100 kpa. Roughly atmospheric pressure at sea level. So 14 psi will be
close enough.

But yet another regressive change in units. Tyres will normally be between
say 25 - 40 psi which is easier to remember than 1.724 - 2.758 bar. ;-)

Worth sticking a dymo label etc inside the front door of the car with the
pressures in the units of your choice, if it doesn't already have one.

--
*Why is the man who invests all your money called a broker? *

Dave Plowman London SW
To e-mail, change noise into sound.

On 09/01/2013 07:12, harry wrote:
On Jan 8, 8:25 pm, "ARW" wrote:
dennis@home wrote:
On 08/01/2013 19:19, polygonum wrote:

Last puncture (more like a complete shredding) was on a *very* steep
hill, an extremely narrow road, and nowhere an ordinary jack could
be located (ground unsuitable and car too heavy to move). So having
a spare wheel only became useful when a recovery service came out
with a suitable jack. 10 or 20 minutes was actually more like an
hour or two.

Tyre shredded too much to drive to somewhere suitable?

My last puncture was in the roadworks on the M6 in rush hour.
I just decided it wasn't worth trying to save the tyre and drove to
the end where I could get on the hard shoulder and then got the AA to
change it.

I think the hundreds of motorists that i saved from an hours delay
should have bought me a new tyre. ;-)

How much are you paying for the tyres for your Astra?

--
Adam

Red Astra? Heh Heh.


I haven't owned an astra for at least a decade and that one was white.
I have an old corsa ATM.
You're not quite as clever as you think you are. Heh Heh.

On 09/01/2013 07:16, harry wrote:

At least one car I am thinking of buying has two wheel sizes.


No spare in a smart either.
You can't even get tyres easily as nobody appears to stock the fronts
and you have to order them in for next day.
YMMV as different smarts have different sizes.

On Tuesday, January 8, 2013 11:13:13 PM UTC, SteveW wrote:
On 08/01/2013 15:54, The Natural Philosopher wrote:

On 08/01/13 15:45, charles wrote:

In article , Muddymike

wrote:

"whisky-dave" wrote in message

...



On Tuesday, January 8, 2013 10:48:59 AM UTC, Tim Watts wrote:

On Tuesday 08 January 2013 01:54 brass monkey wrote in uk.d-i-y:











WTF is a spare wheel?







A useful thing cars used to have...



But just how useful, sure on cars where it was needed but on todays

cars. Do you remmeber the days when you had to have someone walk in

front of your car carry/waving a flag. They were necessary too in them

days. ;-)







So what do you do when you get a puncture miles from anywhere with no

mobile telephone signal?



Wait for someone to pass by. But seriously, how often have you had a

puncture in the last few years? In the 60s, I used to have them

regularly.

My current car - 11 years old - has only needed me to fit the spare

once

in 114,000 miles.



Only tow time sin the last ten years were a potho9le - only a mile from

home, drive it ion the flat. Wheel was destroyed anyway.



Then a 'Green' couple stuck a knife in the sidewall of the land rover.



Had to change the wheel and get a new one fitted.



That is essentially it.



few slow punctures - that's the pint - a tubeless tyre with a nail in it

doesn't go down instantly. It takes a knife or a pothole to do that.



Time to get it pumped up and take to the nearest tyre fitter.



There are plenty of potholes!



I have also been driving or a passenger in cars (with tubeless tyres)

when all of the following have happened: had a tyre wrecked by hitting a

dark hose off a tanker, with a nice metal end; driven over the remains

of an entire box of nails that had fallen off a truck (luckily

puncturing one rear tyre badly and missing the other three, plus the two

caravan tyres - especially as we were hurrying back for a ferry home);

had a blowout on the motorway; come back to the car miles from home at

two in the morning and found a flat tyre with a large bolt through it;

similarly with a screw at home when setting out for work. In all cases a

quick wheel change with no more than 15 minutes delay - at least half

would not be "fixable" with the modern foam emergency repair, causing

unnecessary delay, frustration and extra cost (missed ferry, late for

work, etc.)



The modern trend for no spare is very poor.

Not being a driver I can;t really comment but if cars are required to carry spares of anything I't give me the idea that something will go wrong.

As we;re in the DIY group I assume most have spare batteries for drills but who carried a spare drill and why not if you don't.







SteveW

"Dave Liquorice" wrote in message
ll.co.uk...


I wouldn't knowingly buy a car without a fullsized spare. A full sized
spare and only marginally different wheel sizes might have caught me out
but not now. For a short "get you going to a tyre shoppe" slightly
different wheel sizes wouldn't matter.

"the top ten cars sold in the UK in 2011 only one came with a spare wheel as
standard."
http://www.bbc.co.uk/news/uk-20958277

-

On Jan 9, 7:37*am, polygonum wrote:
On 09/01/2013 07:22, harry wrote:







On Jan 8, 11:51 pm, charles wrote:
In article
,
* * harry wrote:

On Jan 8, 3:50 pm, Grimly Curmudgeon wrote:
On Mon, 7 Jan 2013 23:31:11 -0800 (PST), harry

wrote:
At one time you had to carry many tires and tyre levers.
I expect these people thought the end of the world was nigh when spare
wheels were invented.

If you're going to try to make a point, at least make sure the point
actually exists.
In days of yore, tyres were so poor that most cars carried several
spare tyres plus of course a chauffeur to change them.

The chauffeur's job was to heat the engine before the owner wanted to use
to ensure it started. *It's a French word, btw.

all these *eur words are, aren't they?
And the *euse words

No.
Feur.
Reuse.

--
Rod

Amateur?

On 09/01/13 16:53, harry wrote:
On Jan 9, 7:37 am, polygonum wrote:
On 09/01/2013 07:22, harry wrote:







On Jan 8, 11:51 pm, charles wrote:
In article
,
harry wrote:

On Jan 8, 3:50 pm, Grimly Curmudgeon wrote:
On Mon, 7 Jan 2013 23:31:11 -0800 (PST), harry

wrote:
At one time you had to carry many tires and tyre levers.
I expect these people thought the end of the world was nigh when spare
wheels were invented.

If you're going to try to make a point, at least make sure the point
actually exists.
In days of yore, tyres were so poor that most cars carried several
spare tyres plus of course a chauffeur to change them.

The chauffeur's job was to heat the engine before the owner wanted to use
to ensure it started. It's a French word, btw.

all these *eur words are, aren't they?
And the *euse words

No.
Feur.
Reuse.

--
Rod

Amateur?

that's french I think


--
Ineptocracy

(in-ep-toc-ra-cy) €“ a system of government where the least capable to
lead are elected by the least capable of producing, and where the
members of society least likely to sustain themselves or succeed, are
rewarded with goods and services paid for by the confiscated wealth of a
diminishing number of producers.

On Jan 9, 8:37*am, "Dave Liquorice"
wrote:
On Tue, 8 Jan 2013 23:16:09 -0800 (PST), harry wrote:
At least one car I am thinking of buying has two wheel sizes.

Penny Farthing? *B-)

--
Cheers
Dave.

No Mitsubishi I-miev.
Same diameter front and back, different widths.
It comes with a can of gloop.
I can't get to find out whether the tyre can be repaired after you've
used the gloop or not.

On Jan 9, 9:58*am, tony sayer wrote:
That .. Ought to be part of the driving test. A simple job that every

driver, unless of course physically disabled from doing so, should have

that competency......

I can't agree with that, far too risky to have someone try to replace a car
wheel perhaps 5 years after they've past their test, and onn a differnt car
fromn their test car.

I can agree with it and they ought to make basic car maintenance
essential too. Wouldn't hurt at all.

Like where to put the Oil and Water in a car engine and where other
things go. Its quite basic, like how to check tyre pressures.

I had a young lad ask me at the local petrol station how you used the
air line and what pressure his tyres should be!.

He couldn't, nay did not, have any idea at all on how to convert bar to
PSI!..

Its not rocket science and for one if you were caught driving around on
under inflated or defective tyres its your licence that gets the pain
let alone any other grief you might encounter or what others might.

The driving test is "Far" too easy, all people want to do is to spend as
little as possible on lessons get as little practice just to get their
"ticket" ..

While we're at it compulsory driving tests every three years past the
age of say 65. Where would be the harm in that?..

Course the government would be so lily liveried they'd never do it....
--
Tony Sayer

They can tell who needs to be tested by accident statistics.
It's not over 65s.

On Jan 9, 10:17*am, Huge wrote:
On 2013-01-09, Dave Liquorice wrote:

On Tue, 8 Jan 2013 23:16:09 -0800 (PST), harry wrote:

At least one car I am thinking of buying has two wheel sizes.

Penny Farthing? *B-)

My TVR has different wheel sizes front and rear. IIRC, so do Porsche 911s..


So has it got a spare wheel?

On 09/01/2013 16:53, harry wrote:
On Jan 9, 7:37 am, polygonum wrote:
On 09/01/2013 07:22, harry wrote:







On Jan 8, 11:51 pm, charles wrote:
In article
,
harry wrote:

On Jan 8, 3:50 pm, Grimly Curmudgeon wrote:
On Mon, 7 Jan 2013 23:31:11 -0800 (PST), harry

wrote:
At one time you had to carry many tires and tyre levers.
I expect these people thought the end of the world was nigh when spare
wheels were invented.

If you're going to try to make a point, at least make sure the point
actually exists.
In days of yore, tyres were so poor that most cars carried several
spare tyres plus of course a chauffeur to change them.

The chauffeur's job was to heat the engine before the owner wanted to use
to ensure it started. It's a French word, btw.

all these *eur words are, aren't they?
And the *euse words

No.
Feur.
Reuse.


Amateur?

No - that does come from French. Or was that an amateur attempt?

--
Rod

On 09/01/2013 09:59, tony sayer wrote:
In article om,
dennis@home scribeth thus
On 08/01/2013 14:29, tony sayer wrote:
In article om,
dennis@home scribeth thus
On 08/01/2013 09:27, tony sayer wrote:
OK - TV's have always been specialist - but most other machinery was
pretty
simple.


I dont think TVs were THAT specialist when they were full o' valves


Now this is a good point. A TV of say 1960 or even earlier had pretty
straightforward circuitry so much so that I managed to convert a 1960's
era 405 line set to 625 lines and it worked very well.

Course these days a few chipset's and well, what can you do with
those?...




Reprogram them, put a different OS on, change the jumpers, quite a lot
if you want on most modern sets.


Can you give us an example as to say how you'd change the sound
intercarrier ?...

Or the vision modulation demodulation?..

Would you give an example of which chipset you need instructions for.
You could always choose one with a DSP that you know how to use so you
needn't ask questions that you aren't going to get an answer to.
Who knows? you may even be able to emulate a service remote and change
them to what you want with ease.

Which just shows how totally ignorant you are with TV now Denise.

None of this is now done anymore, intercarrier sound and vision
modulation of carriers..

Analogue TV has now gone out of fashion..


Do I need to remind you that you are the one that asked about them.

PS the DSP would be quite useful for decoding digital signals.

On 09/01/2013 07:16, harry wrote:

At least one car I am thinking of buying has two wheel sizes.


Mine has three. Front wheels, back wheels and spare wheel.

They're all the same diameter (different widths), and there's a big
"50MPH" sticker on the spare.

Andy

On Tue, 8 Jan 2013 11:02:41 -0800 (PST), harry
wrote:

On Jan 8, 3:50*pm, Grimly Curmudgeon wrote:
On Mon, 7 Jan 2013 23:31:11 -0800 (PST), harry

wrote:
At one time you had to carry many tires and tyre levers.
I expect these people thought the end of the world was nigh when spare
wheels were invented.

If you're going to try to make a point, at least make sure the point
actually exists.

In days of yore, tyres were so poor that most cars carried several
spare tyres plus of course a chauffeur to change them.
Once again,your ignorance shows.

http://www.tirerack.com/tires/tirete...jsp?techid=141

********, the spare wheel in its entirety was a common device from day
one.

On Wed, 9 Jan 2013 19:27:02 +0000, tony sayer wrote:

He couldn't, nay did not, have any idea at all on how to convert bar
to PSI!..

TBH I'd have to go back to first principles and I'm not certain what a
"bar" actually is, 1 newton/square meter, naw that's way to small...
kilo newton/square meter? But even then I don't know the exact
conversion factor for kgf to pounds, it's about 2.2 but is that good
enough?

One bar is the same as 1000 mb or standard air pressure at sea level
the same as 14.50 PSI...

Except that the "Standard Atmosphere"(*) is 1013.25 mb or a tad under
14.7 psi... but that still doesn't tell me what a bar *is* in base units
of x newtons per square metre. My 14.5 times table isn't that good
either. B-)

As for my 2.2, it's actually 2.204662 so, for this, 2.2 is "good enough".

(*) Except that there are quite a few "standard atmospheres" to choose
from. B-)

--
Cheers
Dave.

Dave Liquorice wrote:
On Wed, 9 Jan 2013 19:27:02 +0000, tony sayer wrote:

He couldn't, nay did not, have any idea at all on how to convert bar
to PSI!..
TBH I'd have to go back to first principles and I'm not certain what a
"bar" actually is, 1 newton/square meter, naw that's way to small...
kilo newton/square meter? But even then I don't know the exact
conversion factor for kgf to pounds, it's about 2.2 but is that good
enough?

1 (Pound)/0.453592 (Kilogrammes) is 2.2046244201837774916665196917053.

How fussy are you and your applocation?

One bar is the same as 1000 mb or standard air pressure at sea level
the same as 14.50 PSI...

Except that the "Standard Atmosphere"(*) is 1013.25 mb or a tad under
14.7 psi... but that still doesn't tell me what a bar *is* in base units
of x newtons per square metre. My 14.5 times table isn't that good
either. B-)

Bar to Newtons per square metre conversion is easy. 1 bar is 100,000
N/m2, so you just need to move the decimal point. Fractionally over a
tonne weight per square meter on Earth.

1 bar is about 14.5 psi, or 0.987 standard atmospheres. So if you're
using a normal pressure gauge anywhere outside a lab, it's within the
"width of pointer" error limits to being 1 bar = 1 atmosphere. Failing
that, a more accurate short cut is to multiply pressure in bar by 15,
then knock two percent off and divide the total by 15 for "near enough"
atmospheres. That's quick mental arithmetic for me, and should be within
normal, natural, atmospheric pressure variations.

As for my 2.2, it's actually 2.204662 so, for this, 2.2 is "good enough".

(*) Except that there are quite a few "standard atmospheres" to choose
from. B-)

ISO standard temperature and pressure is 1 bar at 0 Celsius. Gauge
makers say that 1 bar is one atmosphere.
--
Tciao for Now!

John.

In message , Huge
writes
On 2013-01-09, Dave Liquorice wrote:
On Tue, 8 Jan 2013 23:16:09 -0800 (PST), harry wrote:

At least one car I am thinking of buying has two wheel sizes.

Penny Farthing? B-)

My TVR has different wheel sizes front and rear. IIRC, so do Porsche 911s.


In Tyrol they have different sizes left and right

It helps when going round mountains

--
geoff

In message , Mark writes

"Dave Liquorice" wrote in message
ill.co.uk...


I wouldn't knowingly buy a car without a fullsized spare. A full sized
spare and only marginally different wheel sizes might have caught me out
but not now. For a short "get you going to a tyre shoppe" slightly
different wheel sizes wouldn't matter.

"the top ten cars sold in the UK in 2011 only one came with a spare wheel as
standard."
http://www.bbc.co.uk/news/uk-20958277

Funny that breakfast time TV did an article about tyres having no spare
wheel today ...


--
geoff

On Jan 9, 5:05*pm, polygonum wrote:
On 09/01/2013 16:53, harry wrote:







On Jan 9, 7:37 am, polygonum wrote:
On 09/01/2013 07:22, harry wrote:

On Jan 8, 11:51 pm, charles wrote:
In article
,
* * *harry wrote:

On Jan 8, 3:50 pm, Grimly Curmudgeon wrote:
On Mon, 7 Jan 2013 23:31:11 -0800 (PST), harry

wrote:
At one time you had to carry many tires and tyre levers.
I expect these people thought the end of the world was nigh when spare
wheels were invented.

If you're going to try to make a point, at least make sure the point
actually exists.
In days of yore, tyres were so poor that most cars carried several
spare tyres plus of course a chauffeur to change them.

The chauffeur's job was to heat the engine before the owner wanted to use
to ensure it started. *It's a French word, btw.

all these *eur words are, aren't they?
And the *euse words

No.
Feur.
Reuse.

Amateur?

No - that does come from French. Or was that an amateur attempt?

--
Rod

So I was right, it is "eur".

On Jan 9, 7:27*pm, tony sayer wrote:
In article o.uk, Dave
Liquorice scribeth thus

On Wed, 9 Jan 2013 09:58:05 +0000, tony sayer wrote:

He couldn't, nay did not, have any idea at all on how to convert bar to
PSI!..

TBH I'd have to go back to first principles and I'm not certain what a
"bar" actually is, 1 newton/square meter, naw that's way to small... kilo
newton/square meter? But even then I don't know the exact conversion
factor for kgf to pounds, it's about 2.2 but is that good enough?

One bar is the same as 1000 mb or standard air pressure at sea level the
same as 14.50 PSI...


Standard air pressure is 1013 mb.

On Jan 9, 8:24*pm, Andy Champ wrote:
On 09/01/2013 07:16, harry wrote:



At least one car I am thinking of buying has two wheel sizes.

Mine has three. Front wheels, back wheels and spare wheel.

They're all the same diameter (different widths), and there's a big
"50MPH" sticker on the spare.

Andy

Bloody hell!

On Jan 9, 8:50*pm, Grimly Curmudgeon wrote:
On Tue, 8 Jan 2013 11:02:41 -0800 (PST), harry









wrote:
On Jan 8, 3:50*pm, Grimly Curmudgeon wrote:
On Mon, 7 Jan 2013 23:31:11 -0800 (PST), harry

wrote:
At one time you had to carry many tires and tyre levers.
I expect these people thought the end of the world was nigh when spare
wheels were invented.

If you're going to try to make a point, at least make sure the point
actually exists.

In days of yore, tyres were so poor that most cars carried several
spare tyres plus of course a chauffeur to change them.
Once again,your ignorance shows.

http://www.tirerack.com/tires/tirete...jsp?techid=141

********, the spare wheel in its entirety was a common device from day
one.

Well I've shown you a link.
One day one they used solid tyres so ******** yourself.
You couldn't carry four or five spare wheels so they carried the
tires.
As some touring pedal cyclists still do.

On Jan 9, 9:36*pm, John Williamson
wrote:
Dave Liquorice wrote:
On Wed, 9 Jan 2013 19:27:02 +0000, tony sayer wrote:

He couldn't, nay did not, have any idea at all on how to convert bar
to PSI!..
TBH I'd have to go back to first principles and I'm not certain what a
"bar" actually is, 1 newton/square meter, naw that's way to small...
kilo newton/square meter? But even then I don't know the exact
conversion factor for kgf to pounds, it's about 2.2 but is that good
enough?

1 (Pound)/0.453592 (Kilogrammes) is 2.2046244201837774916665196917053.

How fussy are you and your applocation?

One bar is the same as 1000 mb or standard air pressure at sea level
the same as 14.50 PSI...

Except that the "Standard Atmosphere"(*) is 1013.25 mb or a tad under
14.7 psi... but that still doesn't tell me what a bar *is* in base units
of x newtons per square metre. My 14.5 times table isn't that good
either. *B-)

Bar to Newtons per square metre conversion is easy. 1 bar is 100,000
N/m2, so you just need to move the decimal point. Fractionally over a
tonne weight per square meter on Earth.

1 bar is about 14.5 psi, or 0.987 standard atmospheres. So if you're
using a normal pressure gauge anywhere outside a lab, it's within the
"width of pointer" error limits to being 1 bar = 1 atmosphere. Failing
that, a more accurate short cut is to multiply pressure in bar by 15,
then knock two percent off and divide the total by 15 for "near enough"
atmospheres. That's quick mental arithmetic for me, and should be within
normal, natural, atmospheric pressure variations.

As for my 2.2, it's actually 2.204662 so, for this, 2.2 is "good enough".

(*) Except that there are quite a few "standard atmospheres" to choose
from. *B-)

ISO standard temperature and pressure is 1 bar at 0 Celsius. Gauge
makers say that 1 bar is one atmosphere.
--
Tciao for Now!

John.

A bar was meant to atmospheric pressure but they got it wrong back
then.
A cubic metre of water was a metric tonne.
A metre was some fraction of the circumference of the earth (got that
wrong).
I think it was Napoleon's scientists. They even came up with a ten day
week.
http://en.wikipedia.org/wiki/Mesures_usuelles

On 10/01/2013 07:54, harry wrote:
On Jan 9, 5:05 pm, polygonum wrote:
On 09/01/2013 16:53, harry wrote:







On Jan 9, 7:37 am, polygonum wrote:
On 09/01/2013 07:22, harry wrote:

On Jan 8, 11:51 pm, charles wrote:
In article
,
harry wrote:

On Jan 8, 3:50 pm, Grimly Curmudgeon wrote:
On Mon, 7 Jan 2013 23:31:11 -0800 (PST), harry

wrote:EUR
At one time you had to carry many tires and tyre levers.
I expect these people thought the end of the world was nigh when spare
wheels were invented.

If you're going to try to make a point, at least make sure the point
actually exists.
In days of yore, tyres were so poor that most cars carried several
spare tyres plus of course a chauffeur to change them.

The chauffeur's job was to heat the engine before the owner wanted to use
to ensure it started. It's a French word, btw.

all these *eur words are, aren't they?
And the *euse words

No.
Feur.
Reuse.

Amateur?

No - that does come from French. Or was that an amateur attempt?

--
Rod

So I was right, it is "eur".

No. You were wrong. Not all words ending in EUR or EUSE come from French.

--
Rod

On 10/01/2013 08:28, harry wrote:
On Jan 9, 9:36 pm, John Williamson
wrote:
Dave Liquorice wrote:
On Wed, 9 Jan 2013 19:27:02 +0000, tony sayer wrote:

He couldn't, nay did not, have any idea at all on how to convert bar
to PSI!..
TBH I'd have to go back to first principles and I'm not certain what a
"bar" actually is, 1 newton/square meter, naw that's way to small...
kilo newton/square meter? But even then I don't know the exact
conversion factor for kgf to pounds, it's about 2.2 but is that good
enough?

1 (Pound)/0.453592 (Kilogrammes) is 2.2046244201837774916665196917053.

How fussy are you and your applocation?

One bar is the same as 1000 mb or standard air pressure at sea level
the same as 14.50 PSI...

Except that the "Standard Atmosphere"(*) is 1013.25 mb or a tad under
14.7 psi... but that still doesn't tell me what a bar *is* in base units
of x newtons per square metre. My 14.5 times table isn't that good
either. B-)

Bar to Newtons per square metre conversion is easy. 1 bar is 100,000
N/m2, so you just need to move the decimal point. Fractionally over a
tonne weight per square meter on Earth.

1 bar is about 14.5 psi, or 0.987 standard atmospheres. So if you're
using a normal pressure gauge anywhere outside a lab, it's within the
"width of pointer" error limits to being 1 bar = 1 atmosphere. Failing
that, a more accurate short cut is to multiply pressure in bar by 15,
then knock two percent off and divide the total by 15 for "near enough"
atmospheres. That's quick mental arithmetic for me, and should be within
normal, natural, atmospheric pressure variations.

As for my 2.2, it's actually 2.204662 so, for this, 2.2 is "good enough".

(*) Except that there are quite a few "standard atmospheres" to choose
from. B-)

ISO standard temperature and pressure is 1 bar at 0 Celsius. Gauge
makers say that 1 bar is one atmosphere.
--
Tciao for Now!

John.

A bar was meant to atmospheric pressure but they got it wrong back
then.
A cubic metre of water was a metric tonne.
A metre was some fraction of the circumference of the earth (got that
wrong).
I think it was Napoleon's scientists. They even came up with a ten day
week.
http://en.wikipedia.org/wiki/Mesures_usuelles

The 10 day week was introduced earlier than that - 1793 if I have got it
right.

--
Rod

In article o.uk, Dave
Liquorice scribeth thus
On Wed, 9 Jan 2013 19:27:02 +0000, tony sayer wrote:

He couldn't, nay did not, have any idea at all on how to convert bar
to PSI!..

TBH I'd have to go back to first principles and I'm not certain what a
"bar" actually is, 1 newton/square meter, naw that's way to small...
kilo newton/square meter? But even then I don't know the exact
conversion factor for kgf to pounds, it's about 2.2 but is that good
enough?

One bar is the same as 1000 mb or standard air pressure at sea level
the same as 14.50 PSI...

Except that the "Standard Atmosphere"(*) is 1013.25 mb or a tad under
14.7 psi... but that still doesn't tell me what a bar *is* in base units
of x newtons per square metre. My 14.5 times table isn't that good
either. B-)

As for my 2.2, it's actually 2.204662 so, for this, 2.2 is "good enough".

(*) Except that there are quite a few "standard atmospheres" to choose
from. B-)


David..

We are only discussing this in the context of pumping up a bl**dy car
tyre not some lab experiment in hydraulics.


--
Tony Sayer

In article om,
dennis@home scribeth thus
On 09/01/2013 09:59, tony sayer wrote:
In article om,
dennis@home scribeth thus
On 08/01/2013 14:29, tony sayer wrote:
In article om,
dennis@home scribeth thus
On 08/01/2013 09:27, tony sayer wrote:
OK - TV's have always been specialist - but most other machinery was
pretty
simple.


I dont think TVs were THAT specialist when they were full o' valves


Now this is a good point. A TV of say 1960 or even earlier had pretty
straightforward circuitry so much so that I managed to convert a 1960's
era 405 line set to 625 lines and it worked very well.

Course these days a few chipset's and well, what can you do with
those?...




Reprogram them, put a different OS on, change the jumpers, quite a lot
if you want on most modern sets.


Can you give us an example as to say how you'd change the sound
intercarrier ?...

Or the vision modulation demodulation?..

Would you give an example of which chipset you need instructions for.
You could always choose one with a DSP that you know how to use so you
needn't ask questions that you aren't going to get an answer to.
Who knows? you may even be able to emulate a service remote and change
them to what you want with ease.

Which just shows how totally ignorant you are with TV now Denise.

None of this is now done anymore, intercarrier sound and vision
modulation of carriers..

Analogue TV has now gone out of fashion..


Do I need to remind you that you are the one that asked about them.

You Might have noticed that those two techniques are now out of
fashion!...

--
Tony Sayer