That's knackered it! *Pic*

Bobc

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Hey Iain, note to self...

Don't let a bunch of lashed-up 12fter sailers sleep on your boat after a curry night...

and if you do, hide the matches!
 

Searush

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I'm impressed it's still afloat & didn't catch fire, but I suspect that the % air gas mix was deliberately planned for bang rather than burn.

Some technical info on the relevant %'s for - nowt, bang, fire & nowt again would be helpfull, cos I think that it is around 5% gas-air that the problem is worst.

I feel sorry for that guy that had to stay on board, no wonder his ear muffs look cock-eyed. :D
 

Cymrogwyllt

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AntarcticPilot

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Ta, Glynn, surprised to see Carbon Monoxide in that list with a 12-75% explosive/flammable range. I thought CO, like CO2 was non-flammable & put flames out.

Nope. CO is the flammable part of "Producer Gas", which was sometimes a component of town gas in olden times. The producer gas reaction is why I am dubious of charcoal stoves on board.

Don't worry - it probably will poison you (CO is actively poisonous; CO2 just asphyxiates you) much sooner than the bang will kill you!
 

daveyw

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Is there a way to fool bbc iplayer? I can only watch stuff geographically local to me, so N. Ireland, Scotland, Wales is ok but bbc south ain't
 

Rowana

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This reminds me of a demonstration we had in the science lab in school about 50 years ago.

The science master had an old treacle tin with a small hole in the bottom, and one in the lid. The 2 holes were covered with a bit of tape, then with the lid off, the tin was held upside down over an unlit bunsen burner, which filled the tin with gas. The gas was turned off and the lid put back on the tin while it was still upside down. Then the tin was turned up the right way and placed on to a tripod stand. the tapes were removed, and the gas coming out of the top hole was lit. As gas came out the top and was burnt, air went in the bottom hole. Nothing happened for a few moments, until there was enough air in the tin to make an explosive mixture - then BANG!, and the lid flew off up into the beams of the old high roofed classroom, where it rattled about a bit before gravity took over and it clattered to the floor. The tin also went shooting off somewhere, but fortunately missed all the 20 or so boys looking on in awe! It gave us a few ideas about repeating the experiment, which I must admit I did outside our back door, with equally spectacular results! !

Can you imagine anything like this being allowed today?

Shame really, as boys enjoy a good explosion!
 

Mrnotming

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Bang!

I enjoyed that Rowana!
Remembering similar experiments in the back garden involving carbide gas production, and high altitude dustbin lids if not dustbins!
Of course a visit to the local County Council library produced interesting books, like "Experiments for Boys" which meant visiting the nearest city for nitric acid, and carrying it home on one's lap on the upper deck of the bus!
Drying gunpowder in the cast iron Jackson electric cooker oven was probably ill advised too!
This post might be neutered!
nice work Snooks and team with the demo gas explosion.Hope it surfaces on youtube.com as BBC player is too much of a workaround here.
 

snooks

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newsimg16e31be7explodingboatjpg.jpg


Picture by Chris Thwaites courtesy of Bembridge Lifeboat. Notice the top half of one of the dummies in the red jacket!
 
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Iain C

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Hey Iain, note to self...

Don't let a bunch of lashed-up 12fter sailers sleep on your boat after a curry night...

and if you do, hide the matches!

So now finally my reason for sleeping aboard my 12fter in a field after a particularly sambuca fuelled evening is finally justified! No coachroof!

(I still maintain it was nothing to do with crashing a bike into it and going over the handlebars and sleeping where I fell...)
 

VO5

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This reminds me of a demonstration we had in the science lab in school about 50 years ago.

The science master had an old treacle tin with a small hole in the bottom, and one in the lid. The 2 holes were covered with a bit of tape, then with the lid off, the tin was held upside down over an unlit bunsen burner, which filled the tin with gas. The gas was turned off and the lid put back on the tin while it was still upside down. Then the tin was turned up the right way and placed on to a tripod stand. the tapes were removed, and the gas coming out of the top hole was lit. As gas came out the top and was burnt, air went in the bottom hole. Nothing happened for a few moments, until there was enough air in the tin to make an explosive mixture - then BANG!, and the lid flew off up into the beams of the old high roofed classroom, where it rattled about a bit before gravity took over and it clattered to the floor. The tin also went shooting off somewhere, but fortunately missed all the 20 or so boys looking on in awe! It gave us a few ideas about repeating the experiment, which I must admit I did outside our back door, with equally spectacular results! !

Can you imagine anything like this being allowed today?

Shame really, as boys enjoy a good explosion!

....:D...LOVE IT !...takes me back years...:D

What about experiments on conductivity in the Physics Lab......wet hands and molten lead ? :D:eek:

And the flour trick ?
 
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