Re: Flamegun weedkiller - Sheen X300

On Sun, 11 May 2008 16:26:37 +0100, "Derek"
<del.wattsdontspamsoclosetome@[EMAIL PROTECTED]
> wrote:

>
>"Jim" <garden@[EMAIL PROTECTED]
> wrote in message 
>news:rsod24dp4v9a8r1mb9k84euoi35s3vh13v@[EMAIL PROTECTED]
>> Thanks Dave and Martin for responses.
>> UPDATE
>>
>>>Not sure that the bits will get hot enough hot over a barbie. I'd
expect
>>>to find a little indentation or spoon to hold about a table spoon full
of
>>>meths some where near the jet/coiled pipe.
>>
>>>Light the meths and when it's almost all burnt turn on the valve
slowly,
>>>the burning meths should ignite the vapour.
>>>
>>>You way runs the very real risk of either have a jet of hot(ish) liquid
>>>parafin or clouds of vapour (whumpf!) or something inbetween (20' flame
>>>thrower).
>>
>>
>> I've just taken it apart and cleaned it.
>> Not in bad nick.
>> I find a wick laying around the coil and jet.
>> As such, I guess the technique is to soak the wick in meths, ignite
>> the wick, then proceed after the meths is about gone.
>>
>> Cleanliness points noted re jet and paraffin quality.
>> I've just poked around in the jet with a paper clip.
>>
>> I'll give it a go tomorrow.
>> If OK, it's a good 20 pounds worth - they sell for ~145 online !
>>
>> Cheers,
>> Jim
>
>Unless methodology has changed since the days of pressure blowtorches you

>should soak the wick in paraffin not meths a slow burn is needed to heat
the 
>coil to raise  the temperature of the paraffin beyond its flash point
meths 
>tends to burn too quickly  heating  the surrounding air and does not need
a 
>wick  this is the type which uses meths poured into the dish below.
>http://uk.youtube.com/watch?v=P7tmQH9KtWM

Whoever made the film opened the valve too soon, the meths hadn;t finished
burning.

Primus type stoves and lanterns have always been preheated using meths
going
back more than 100 years. Nowadays there is a rock wool wick in the bowl.
-- 

Martin