
Speaking as someone who knows nothing at all about engineering, wouldn't the loop just fill with water between 1 and 2? You know, kind of like the u-bend below a sink?

( , Sun 6 Jan 2013, 14:31, Reply)

The water has momentum or extra pressure at the top; ie the water would loop-the-loop and exit.
I suspect you might need to 'push' the water at the top tho.
( , Sun 6 Jan 2013, 14:33, Reply)

So some kind of flush? Would it really loop-the-loop, though? Wouldn't it just form a well at the nadir, and fill it all the same? I mean, I'll bow to your knowledge - I make no claim to expertise - but I can't get my head around how it'd work.
( , Sun 6 Jan 2013, 14:36, Reply)

for every skinny person who goes down * steady on there not that sort of going down*
a fat fuck is sent in after them the increase in air and water pressure due to the wobbly bulk filling the tube increases the internal pressure untill it spits the skinny person out at the bottom, the fat person is removed with the help of a japanese whaling team
( , Sun 6 Jan 2013, 14:36, Reply)

I'm imagining a MASSIVE mechanical plunger device at the top to whoosh everyone around.
( , Sun 6 Jan 2013, 14:37, Reply)