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Defcom
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 Posted: Fri Aug 05, 2016 8:41 pm |
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Joined: Wed Oct 06, 2010 8:21 pm
Posts: 2953
Location: Paddington, London
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Tony
iMac 24" M3 16Gb ram 512 SSD
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Community fibre 150MBdown 150MBup.
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Ramaprem
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Posted: Fri Aug 05, 2016 8:50 pm |
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Joined: Wed Oct 06, 2010 8:38 pm
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Holy ...
Thanks, Tony, for the tour.
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Jonah
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Posted: Tue Aug 09, 2016 6:23 am |
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Joined: Wed Oct 06, 2010 7:51 pm
Posts: 7822
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I'm never wrong, I'm just less right on occasions.
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Ramaprem
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Posted: Tue Aug 09, 2016 8:01 pm |
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.
Scroll down a bit to the video.
The gymnast is fine; the parents are under medical supervision.
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Jonah
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Posted: Wed Aug 10, 2016 2:58 pm |
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Joined: Wed Oct 06, 2010 7:51 pm
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Squirrel!!!
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I'm never wrong, I'm just less right on occasions.
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Ramaprem
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Posted: Wed Aug 10, 2016 3:07 pm |
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Joined: Wed Oct 06, 2010 8:38 pm
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 That was a good one.
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Leewave
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Posted: Mon Aug 15, 2016 9:51 pm |
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Joined: Wed Oct 06, 2010 8:27 pm
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Ramaprem
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Posted: Tue Aug 16, 2016 7:42 am |
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Joined: Wed Oct 06, 2010 8:38 pm
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Best described as: Guilty dog smothers and suffocates baby.
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Ramaprem
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Posted: Wed Aug 31, 2016 10:44 am |
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Joined: Wed Oct 06, 2010 8:38 pm
Posts: 5152
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The video is in the middle of the page. Stay with it - and practice your Chinese.
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Ramaprem
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Posted: Thu Sep 01, 2016 5:01 pm |
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Joined: Wed Oct 06, 2010 8:38 pm
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Okay, you guys in the UK probably know all about this (and perhaps have (literally) seen it), but it's new(s) to me - and mind-blowing:
The Falkirk Wheel in Scotland.
There is a video of it in action .
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jcturner
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Posted: Thu Sep 01, 2016 5:10 pm |
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Joined: Wed Oct 06, 2010 2:17 pm
Posts: 3367
Location: North Hertfordshire, UK
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An excellent bit of engineering, one I would like to visit and see first hand.
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James
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Ramaprem
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Posted: Thu Sep 01, 2016 5:13 pm |
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Jonah
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Posted: Fri Sep 02, 2016 11:01 am |
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Joined: Wed Oct 06, 2010 7:51 pm
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Biff from Back to the Future
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I'm never wrong, I'm just less right on occasions.
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Leewave
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Posted: Fri Sep 02, 2016 11:44 am |
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Re: The Falkirk Wheel - yes a great bit of engineering and actually very simple but yet very clever. The two caissons are connected by large mechanical cogs so they never get out of sync - and the weight of the boat and the water in one is equal to the weight of the boat and the water in the other one, they are always "the same" - so the power to rotate the whole thing is relatively small and I imagine they do it with electrical motors. In other words, whatever size of boat enters, or even if one has no boat at all but just water, it doesn't matter.
That's because whatever the size of the boat, it displaces it's own weight in water so that the weight of boat and water together is purely related to the canal level and is the same in each - as long as the canal level at the top is the same as the canal level at the bottom. The relative water level of the top feeder canal is presumably kept the same as the water level at the lower canal to equalise the weight between the two and since there are two locks to negotiate to get into the upper caisson of the Falkirk wheel, it is presumably straightforward to adjust the water level in the feeder canal to match that in the lower canal.
It is automatically weight-balanced and so requires relatively low power to operate.
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Ramaprem
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Posted: Fri Sep 02, 2016 2:16 pm |
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Joined: Wed Oct 06, 2010 8:38 pm
Posts: 5152
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As in the counter-weights for a lift.
Well, actually, those weights are not automatically weight-balanced. In fact, they are probably never in balance. But they serve the same function.
Last edited by Ramaprem on Fri Sep 02, 2016 10:13 pm, edited 1 time in total.
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