"vacuum" flasks

In article <[email hidden]>, druidh
<[email hidden]> writes

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"]news:[email hidden]...

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In article <[email hidden]>, druidh
<[email hidden]> writes

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I remain to be convinced that stainless steel flasks keep their contents

hot

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as well as old fashioned "Thermos" flasks. Tried it, but back to the old fashioned method for
me. (Yes - I know all about priming, insulating etc

etc

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etc). Another triumph of gadgetry over function.

One of the mags did a review of a whole bunch of stainless flasks and at least one
traditional glass.

IIRC the best stainless were as good as the glass. The worst stainless were very poor.

--

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Quoted message said:

dscs.demon.co.ukdscs.demon.co.ukOpen ↗

Any chance of laocting the article? Very interested to see what was as good as glass.

I think it was in High Magazine, four or five years ago and I probably have it in the loft but I'm
not likely to dig it out in the near future. If I knew which issue it was in I would stand a better
chance of finding
it.

Vague recollection seems to indicate that Aladdin flasks performed well and I seem to remember
keeping my eyes open for one after reading it.

However I have not actually bought one as I was tempted by the cheap Thermos brand ones looking at
me from Asda's shelves. They seem to perform fine for me but I'm a hot blackcurrent fan so may not
be as picky as the tea/coffee brigade.

--

dscs.demon.co.ukdscs.demon.co.ukOpen ↗

Brian said:

I don't suppose any of you guys could recommend a decent brand of "vacuum" flask?

If you are cashed up, take a look at backpackgeartest.orgThOpen ↗
ermos%20Flasks/Nissan%20Titanium%20Thermos.

Andrew

aushiker.comaushiker.comOpen ↗ - Aushiker: Hiking in Western Australia 2003 Bibbulmun Track End to Ender
President, Perth Bushwalkers Club - perthbushwalkers.asn.auperthbushwalkers.asn.auOpen ↗

Simon Caldwell wrote on Sat, 28 Feb 2004 10:57:28 +0000....

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Mine's an Aladdin Atlas and I'd recommend it to anyone.

I had a glass Thermos which gave good service for many years, until a year or two ago when I
realised that it was no longer keeping my coffee hot all day. It didn't look to be broken but I
suppose it must have started to lose its vacuum.

So I replaced it with a stainless steel Aladdin, which was fine until I left it behind after a
refreshment stop on Great End last May.

Then my wife bought me a stainless steel Thermos which seemed to have a very similar design to the
Aladdin. However it was useless (the stopper leaked).

I've now got another Aladdin (an Adventurer) which again works well.

--
Tim Jackson [email hidden] (Change '.invalid' to '.co.uk' to reply direct)
Absurd patents: visit patent.freeserve.co.ukpatent.freeserve.co.ukOpen ↗

Leonard Trim said:

Interested in this thread. I have a SS flask but it leaks. It is one of those ones where you press
in a button then pour. Useless. Can anyone suggest a 0.75 litre SS flask which does not leak,
preferably one with no fancy press button/pour type thingies. I do not use a thermos, because I
have broken a couple, mind you that was in my mountaineering rather than walking days.

I use a 1Ltr stainless steel Thermos.

search.kelkoo.co.ukss stainless steel thermos flasks.htmlOpen ↗

I used to use it a lot in the hills but now I just carry the cooker and a pot with the ingredients
for tea and lunch. What I do find it good for is filling it at night and using it for a hot drink in
the morning as breakfast is cooking. I have used it 10 hours after filling and the water is still
hot even if I have used some of it during the day.

--
Don`t Worry, Be Happy

Sandy
--

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ICQ : 41266150

[email hidden] said...

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Phil Cook said:

Now leaving a thermos in the car to drink after a walk is a mighty good idea, especially if you
are parked miles from anywhere.

Better still is a stove and kettle and tea and coffee and... various other goodies waiting for you
when you get back. Takes 5 mins to brew up, and it's much nicer than tea that's been in a flask
all day.

Nonononono, you just leave the water in the flask, and add the tea or coffee when needed. Or you do
as I do - leave black tea in the flask (without its teabag or it'll stew) and then add milk (if
required) at the time of drinking. I drink my tea black in any case and I don't like stewed tea at
all. The above method seems to work OK and the flask is easier to clean afterwards if there's been
no milk or strongly flavoured coffee, soup, whatever. If I were going to have soup I'd leave plain
hot water in the flask.
--
Fran If you need my email address please ask.

Chris Street <[email hidden]> wrote

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Aladdin do some of the best stainless flasks. My 1 litre one is outperformed by a 1 litre Thermos
by about 2C in the first four hours which isn't that bad.

My smaller noname stainless 0.5 litre fares worse although that's probably due to it being smaller
- 6C in four hours (below the Thermos)

I must do a side by side test on mine and get the exact figures, but the leaking when I shake the SS
flask makes it unusable in real life.....

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I once took the inner of a three litre Thermos and stuck a base plate and the innards of a
Mullard 360 tetrode inside - took my father ages to realise that it wasn't actually some form of
exotic RF tube!

:-)
--
Gordon

Leonard Trim said:

Interested in this thread. I have a SS flask but it leaks. It is one of those ones where you press
in a button then pour. Useless. Can anyone suggest a 0.75 litre SS flask which does not leak,
preferably one with no fancy press button/pour type thingies.

Alladin Atlas. No frills, unless you count a stopper which you only have to half undo to pour. About
13 years old and still hasn't leaked.

Quoted message said:

Nonononono, you just leave the water in the flask, and add the tea or coffee when needed.

Tea? Coffee? Hot ribena is the only drink to take!

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

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druidh <[email hidden]> wrote

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The SS one was a present from my daughter a few years ago, hasn't been used much, barely keeps it
warm for a day's walk,

Do you prime it first, with boiling water? You have to pre-heat S/S flasks for them to
work properly.

Leonard Trim said:

Interested in this thread. I have a SS flask but it leaks. It is one of those ones where you press
in a button then pour. Useless. Can anyone suggest a 0.75 litre SS flask which does not leak,
preferably one with no fancy press button/pour type thingies. I do not use a thermos, because I
have broken a couple, mind you that was in my mountaineering rather than walking days.

[...]

'Trail' did a review of SS flasks a few months back, and based on that I got a Vango 1 litre. This
is far better than the Aladdin I used before this.

I think the main problem is that some (all ?) of the 'click to pour' lids let out heat quickly. The
new flash has a better design: one of the 'half unscrew to pour' stoppers.

I had great difficultly getting the Vango in Manchester: eventually getting one from Vango
themselves.

Hope this helps !

- Harry

--
Harry Newton harry_newton at telinco . co . uk www . gaudeamus . telinco . co . uk / html /
gpg . html

Quoted message said:

However I have not actually bought one as I was tempted by the cheap Thermos brand ones looking at
me from Asda's shelves. They seem to perform fine for me but I'm a hot blackcurrent fan so may not
be as picky as the tea/coffee brigade.

I bought a cheap 0.35L flask from Tescos - £4.99, ideal for soup!

I'll probably buy a cheap larger capacity tesco flask until I get my flask replaced.

--
Brian

Harry Newton <[email hidden]> wrote

Quoted message said:

'Trail' did a review of SS flasks a few months back, and based on that I got a Vango 1 litre. This
is far better than the Aladdin I used before this.

I think the main problem is that some (all ?) of the 'click to pour' lids let out heat quickly. The
new flash has a better design: one of the 'half unscrew to pour' stoppers.

That's the type of top which leaks on mine, and doesn't pour very well. No name on it - so it could
be a cheap one I suppose.
--
Gordon

Rifleman <[email hidden]> wrote

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

Quoted message said:

druidh <[email hidden]> wrote

Quoted message said:

The SS one was a present from my daughter a few years ago, hasn't been used much, barely keeps it
warm for a day's walk,

Do you prime it first, with boiling water? You have to pre-heat S/S flasks for them to work
properly.

:-)
I have been priming flasks of conventional type for between 40 and 50 years, can't remember! I
don't see any reason why SS are different, except that there is a designed-in factor known as
conduction, which I think is why they aren't as good, even if they do have some kind of thermal
isolation at the neck.
--
Gordon

Simon Caldwell said:

Quoted message said:

Nonononono, you just leave the water in the flask, and add the tea or coffee when needed.

Tea? Coffee? Hot ribena is the only drink to take!

Indeed - thats what I take to work everyday - I don't suppose that would somehow attack the inside
of the flask and break the vacuum seal or something?

The last two flasks I had were ruined by cleaning them with sterilising fluid. this attacked the
vacuum seal. Thought it would be clever and have a nice sterile flask after leaving them overnight..
Haven't done this with my current flask, so I don't know why its went the way it has with the outer
wall getting hot.

--
Brian

Gordon said:

Harry Newton <[email hidden]> wrote

Quoted message said:

'Trail' did a review of SS flasks a few months back, and based on that I got a Vango 1 litre. This
is far better than the Aladdin I used before this.

I think the main problem is that some (all ?) of the 'click to pour' lids let out heat quickly.
The new flash has a better design: one of the 'half unscrew to pour' stoppers.

That's the type of top which leaks on mine, and doesn't pour very well. No name on it - so it could
be a cheap one I suppose.

I have a "Tatonka" (bought for me, I hasten to add) 1l flask and a genuine Thermos 0.5l one. The
larger one pours copiously when the cap is partly unscrewed, the smaller has a tab that levers up a
seal underneath, allowing a dribble from the top. Mind you, the cup size on a 0.5l flask is so small
that a dribble is quite adequate - it reminds me of my daughter's toy tea sets. I bought the small
flask because I quite like carrying a modicum of hot drink in addition to a Sigg bottle of squash.

I don't find keeping either upright all that difficult, but I don't think they leak easily anyway.

--
Psychic Convention cancelled due to unforeseen problems.

Mail john rather than nospam...

On 28/2/04 1:07 am, in article
[email hidden], "Fran" <[email hidden]>

Quoted message said:

Quite. I've never had any problems with mine. I've got two stainless steel flasks, and they're
both brilliant. Much better than the lottery with the glass getting in the water.

I've got two, a small one and a larger size, stainless steel flasks. The larger one is superb and
keeps soup and stuff hot for most of a good day's walking. The smaller one is not do good and will
be getting a little too lunkewarm by lunchtime. Both are far better for filling with boiling water
for 5 minutes before putting in you chosen liquid.

The message <[email hidden]>
from Gordon <[email hidden]> contains these words:

Quoted message said:

I don't see any reason why SS are different, except that there is a designed-in factor known as
conduction, which I think is why they aren't as good, even if they do have some kind of thermal
isolation at the neck.

I don't have any figures but I assume that the reason priming SS flasks with boiling water gets much
more emphasis must be because the specific heat capacity of steel is much higher than that of glass.

--

Roger

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

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druidh said:

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

Quoted message said:

On Fri, 27 Feb 2004 19:03:10 +0000, Graham Bowers wrote:

>>
>> Doesn't seem right to me... I did get a replacement stopper free of charge from the
>> manufacturer as the rubber o-ring had perished, but

even

Quoted message said:

>> with the new stopper the outer wall is still getting hot.
>>

....Amazing things Vacuum flasks they keep thing hot and they keep thing cold can anyone tell me how
they know which is which??

barry

barry <[email hidden]> wrote

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Quoted message said:

Quoted message said:

> >>

....Amazing things Vacuum flasks they keep thing hot and they keep thing cold can anyone tell me
how they know which is which??

barry

I buys one for my blonde girl friend and I tells her it can keep things hot or keep things cold. She
met me for a picnic and brought the flask along. I said "What you got in it Babe"?

She said "Why - Coffee and ice cream, Honey".
--
Gordon

In message <[email hidden]>, John Laird <nospam@laird-
towers.org.uk> writes

Quoted message said:

Gordon said:

Harry Newton <[email hidden]> wrote

Quoted message said:

'Trail' did a review of SS flasks a few months back, and based on that I got a Vango 1 litre.
This is far better than the Aladdin I used before this.

I think the main problem is that some (all ?) of the 'click to pour' lids let out heat quickly.
The new flash has a better design: one of the 'half unscrew to pour' stoppers.

That's the type of top which leaks on mine, and doesn't pour very well. No name on it - so it
could be a cheap one I suppose.

I have a "Tatonka" (bought for me, I hasten to add) 1l flask and a genuine Thermos 0.5l one. The
larger one pours copiously when the cap is partly unscrewed, the smaller has a tab that levers up
a seal underneath, allowing a dribble from the top. Mind you, the cup size on a 0.5l flask is so
small that a dribble is quite adequate - it reminds me of my daughter's toy tea sets. I bought
the small flask because I quite like carrying a modicum of hot drink in addition to a Sigg bottle
of squash.

I don't find keeping either upright all that difficult, but I don't think they leak easily anyway.

I did a test for TGO a couple of years ago, checking contents temperature after 4, 8, 12 and 24
hours. There was no discernible difference between flasks after 4 hours but there was after 8 though
even after 12 the water was still pretty hot (highest 91C, lowest 74C). The best results came from
the 1 litre Salewa Thermo Star. Of the half-litre flasks the Zojirushi Tuffslim Compact and Aladdin
Stanley were pretty good. I found, unsurprisingly, that smaller flasks cooled down slightly faster
than large ones.

When choosing a flask I think weight and type of lid matter more than heat retention, as they are
all pretty good at the latter. The heaviest 1 litre flask I tested weighed 770 grams, the lightest
585 grams. Some of the flasks were hard to pour from without removing the cap, which of course leads
to the contents cooling more quickly.