h a l f b a k e r yRecalculations place it at 0.4999.
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Hold the valve open, squeeze, push the air up from the tail end to the valve, have another squeeze. Why, oh why, don't they just put a zip on the things so that you can achieve instant deflation?
Sussex Sharks
http://www.sussexcricket.co.uk/
Just a shameless plug for my favourite team. [DrBob, Sep 17 2001, last modified Oct 21 2004]
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Because zippers aren't airtight. |
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I've been reading "Many Coloured Land" recently and that has decamole, a flexible format for portable inflatable things that has a powered unit for inflation and deflation. Taking a leaf from that book maybe all you need is a reverse hand or foot pump that allows you to extract the air. |
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(PeterSealey, Respect).
We also have such a mattress for camping, irritating family stopping the night etc. Ours however is not infalatble. |
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infalatble shhh you will wake highschoolkid |
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can you not connect it to the hoover / vacuum cleaner to suck out the air ? |
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Only if I take the hoover to the cricket match with me and use a very long extension lead. |
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In that case DrBob, fill it with helium, being careful not to overinflate. |
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Then when it comes time to empty it just give it to the yobboes on the hill. They'll suck the helium out of it for you. (Caution: you probably won't ever again want to reinflate it with your mouth) |
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That's part of the problem UB. I *am* one of the yobboes on the hill. One of the reasons I thought of a zipper (although PeterSealy's big airhole (!) would work just as well) was so that I could flush out the accumulated bodily fluids from poor old Sid's innards (Sid being the name of the shark). |
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Oh... I just liked the mental image of 20 or so lager louts passing around a plastic shark with randomly applied Band-aid patches and then chanting WATERMELON! WATERMELON! WATERMELON! WATERMELON! in highpitched, squeaky voices. |
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Something we used to do at The Gabba cricket ground in Oz. Buy a watermelon from the public. (They'll usually part with it for $30-40). Stand in a circle and start tossing the melon into the air and catching it whilst chanting WATERMELON! loudly and repeatedly. Once it gets to maybe 25-30 feet high with each toss someone calls BREAK! Everyone runs backwards to leave the killing ground clear and the watermelon is sacrificed to The Hill. Never tried it with helium though. Strangely enough, you start to attract The Plod after 2-3 sacrifices for some reason. |
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Throwing a watermelon 30 feet in the air sounds like no mean feat. Either watermelons are smaller in Australia, or people are stronger. |
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Eight of us in a circle. Watermelon is probably only 8-10 kg (17-22lb). I doubt one person could throw it much more then 10-12 feet though. We never tried. |
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I'm wondering why [DrBob] takes an inflatable shark to a cricket match. |
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Because I support the Sussex Sharks, of course. |
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there are portable machines to blow up your tyres or inflatables, perhaps they could have a suck mode? |
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Most of those gadgets suck, po. |
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you are right UB but this shark business is getting to me |
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It's a bad sign if you spend all your time worrying about sharks, po. Unless you go swimming a lot, of course. |
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no, its specifically Dr Bobs shark that I worry about |
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no sharks in London' s swimming baths not even in the Thames - they would probably be poisoned |
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