Petrol v. Charcoal hand warmers

sagalout

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I have bought and used both the charcoal and the lighter fluid type hand warmers. I like two hand warmers so I have one for each hand. These are warmers not hot plates but I find the heat is very pleasant when my hands get cold.

The charcoal ones allow the heat to be increased by lighting the charcoal stick at both ends. The major problem with this type is that I have difficulty lighting the sticks and keep them burning (the sticks I have used are the highlander brand, may be I should have tried another brand but I didn't think of that until now, after all charcoal is charcaol ain't it? NOTE I lied here the warmers are highlander, the sticks are gelert). I have tried getting 1/2 an inch burning before putting it in the box and also keep opening the box and blowing on the stick to re-invigorate the burn. When they do burn properly they work well, but trying to light one on the bank on a windy day is always going to be a challenge. When one burns without going out it supplies about 6 hours of heat, half that if you light both ends. A charcoal stick costs about 20p.

The petrol lighter ones work by catalytic action so there is no flame. The lighter fluid is poured into the main body and then a flame is applied to the burner unit for 15-30 seconds to start the process. These work well and supply around 12 hours on a fill, the heat cannot be varied. The problem of lighting it on a windy bank applies to these as well as the charcoal ones, but once alight these do not stop until the fuel supply is exhausted so lighting it going before leaving home is the best option.

There is a petrol version, the S-Boston, that has a battery operated igniter and claims to never need a burner replacement but at an eye watering £32'ish I couldn't convince myself to buy one even though long term it may prove to be the cheapest option. I did find a review of this one where the user was complaining that sand had got into the igniter and it no longer worked and no spares were available. That decided me to go for the Zippo because the spares are readily available.

The petrol ones need a new catalitic gismo every 60 to 80 uses (the number comes from the Zippo litrature) and at the moment a new burner unit for a Zippo is about £5, so worst case running cost is about 8p for the burner and about 10ml of lighter fluid for a 6 hour burn costs about 10p so the running costs are comparable.

Both types give off some odour with the petrol version being the worst but it is not horrendous, just a slight whiff.

The first petrol one I bought was unbranded and the burner unit lasted about 10 uses and I could not get a replacement so it has languished in my **** draw and was the reason I went to the charcoal ones. I have given up on the charcoal ones now because I spent more time trying to keep them alight than fishing, and have just bought a Zippo petrol burner. The burner from the Zippo fits my johnny no brand so I have ordered a Zippo burner for that.
 
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barbelboi

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I've tried most over the years but for ease of use I prefer something like this.
Jerry

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Jeff Woodhouse

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I've tried those before Jerry. We were filming in a field just outside of Watford, freezing day and we couldn't wear coats either. The crew handed out those little bags of crystals or whatever they are and I grabbed two, one for each hand and put them in my trouser pockets. Worked better than Viagra, if you get my drift. Or was it the voluptuous assistant director that I kept admiring... Naughty but nice.

Back to Mr Lout - I've used the charcoal ones before now and they're fine, but Graham Marsden did a test on a petrol one you may find in the archive. He liked it.
 

dave oates 2

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hotties for me too, but cheaper to buy a box. try Amazon and Costco.
atb, dave
 

broomy

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I really suffer from poor circulation been out today trotting for greyling with a hottie in either pocket they really work. Got mine off ebay £16.00 for fourty.
Gave up on the charcoal type to much trouble, great when they work.
80% of the time they dont.
 

Titus

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A better place to keep your handwarmer is in your shirt pocket, it's next to your heart and keeps your core warm.
When you start to chill off your body has a defence mechanism to keep you alive, it does this by sacrificing your extremities by shutting down your peripheral circulation and diverting the blood to your core and your brain, that's why your fingers and toes feel the cold first.
By putting the handwarmer in your shirt pocket you will keep your core temp up which means the circulation to your extremities will be good.
Another tip is to wear a hat, your head is quite a big area to loose heat from and will act like a radiator, by keeping it warm you will also increase the blood available for your extremities, think of it as insulating your loft.
while I'm on it try those gel filled fingerless gloves cyclists use, they are great and you forget you are wearing them. You can even put your hands in your pockets while wearing them.
 

barbelboi

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Wearing a hat to stop heat escaping from your head is an old myth. More recent studies confirm that there is nothing special about the head and heat loss. Any uncovered part of the body loses heat and will reduce the core body temperature proportionally. So, if it is cold outside, you should protect your body. But whether you want to keep your head covered or not is up to you - wearing a hat will just keep your head warmer.
Jerry
 

thx1138

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Wearing a hat to stop heat escaping from your head is an old myth...

... But whether you want to keep your head covered or not is up to you - wearing a hat will just keep your head warmer.

Make your mind up ;)

The myth I think you are referring to is that more heat escapes proportionally from your head than other parts of your body. If you are stood there naked, then there is no difference.
However, if you are layered up on the riverbank on a freezing winters day, it makes no sense to have all the rest of your body covered, and then leave your head exposed. I was out fishing yesterday and took my hat off for 5 mins - couldnt believe how quickly my head chilled and suddenly my hands and feet started to feel cold too.

Anyway, back to handwarmers, I had a charcoal one, but found it unreliable. Prefer to use the 'hotties' as others have suggested. Nothing better than a steaming mug of tea though, which is why I always have a stove in the car! :)
 

Titus

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Wearing a hat to stop heat escaping from your head is an old myth. More recent studies confirm that there is nothing special about the head and heat loss. Any uncovered part of the body loses heat and will reduce the core body temperature proportionally. So, if it is cold outside, you should protect your body. But whether you want to keep your head covered or not is up to you - wearing a hat will just keep your head warmer.
Jerry

The jury is still out on the old wives tale.
The total skin area of an uncovered head is 18% of the area of the body, or double that of of both your arms. You would not dream of fishing in a vest in freezing temps so why baulk at the thought of wearing a hat?
It is a fact though that as the body cools it will pump proportionately more blood to the head to protect the brain, this is known as peripheral shutdown and is a well known medical phenomenon. The body will shut down all non essential functions including respiration and circulation while still protecting the brain, it's why those who work in A&E have a saying for hypothermia victims which goes something like they are not dead until they are warm and dead.

The chart below is from a treatment schedule to calculate % of burns but it illustrates my point.

Percentage of total area of skin exposure.

Anterior head 4.5%
Posterior head 4.5%
Anterior torso 18%
Posterior torso 18%
Anterior leg, each 9%
Posterior leg, each 9%
Anterior arm, each 4.5%
Posterior arm, each 4.5%
Genitalia/perineum 1%
 

barbelboi

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Titus, I'm a firm believer in wearing a hat in cold weather to keep warm - I also believe the more recent research that states, as per my earlier post, 'that there is nothing special about the head and heat loss. Any uncovered part of the body loses heat and will reduce the core body temperature proportionally'. Earlier belief that most heat was lost from the head was based on (since proved worthless) tests by the US army in the 50's.
Jerry
PS I do know what real cold is, and how to deal with it, from spending many months in the Arctic winter.
 

Titus

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You are either being deliberately obtuse or I'm not explaining myself very well.

First I have not cited the old us army myth of up to 50% of body heat being lost through the head, in fact I posted a chart showing that your head is only 18% of your surface area so even if you are Dara Ó Briain you are only going to loose a maximum of 20% of your body heat through your head.
However, if your body gets to the point where it is hypothermic it will divert blood to your brain and sacrifice your extremities, taken to the extremes this is known as deep hypothermic arrest and induces a state of coma where the circulation and respiration is ceased and for all intent the patient is dead. It is purposely induced into patients for complicated brain and circulatory system surgery.
If you have a choice of wearing a hat or wearing gloves you will feel warmer for longer by choosing the hat.

---------- Post added at 13:41 ---------- Previous post was at 13:36 ----------

What you need is Peripheral Neuropathy; sun, snow or ice, I cant feel a $loody thing:D

But I'd far rather know my hands/feet were cold :(

That is nasty John, I have Raynaud's syndrome associated with Rheumatoid Arthritis and sometimes my fingers simply shut down and go dead white, very often I don't notice until someone points it out.
 

904_cannon

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That is nasty John, I have Raynaud's syndrome associated with Rheumatoid Arthritis and sometimes my fingers simply shut down and go dead white, very often I don't notice until someone points it out.

Another 'benefit' I once had a size 2 barbed hood embedded into the arch of my foot and never felt a thing (walking about the house without shoes) Only realised when I took my socks off

My wife suffers badly from Rheumatoid Arthritis so I can sympathise, Titus.
 
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binka

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It's very true too.

I experienced the reverse effect some years ago when someone showed me how it cools you down during heat when you run a cold tap on your wrist veins, it's almost as if you can feel it circulating through you.
 
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