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My daughter got a new bike for her birthday - this is the last time that the rear cogs will look this clean!
50/50 Project: 13 of 50
Thomas Daley's Standsure Brick Company on Sydenham Road. Established in 1886, it was quite a successful venture, employing approximately 60 people before ceasing operations.
Information sourced at.
www.marrickville.nsw.gov.au/community/history/brickworks.htm
the cover i did for COG magazine. the original print is a full sheet 22x30 monotype black and silver printed on Rives bfk
The Falkirk Wheel lies at the end of a reinforced concrete aqueduct that connects, via the Roughcastle tunnel and a double staircase lock, to the Union Canal. Boats entering the Wheel's upper gondola are lowered, along with the water that they float in, to the basin below. At the same time, an equal weight rises up, lifted in the other gondola.
This works on the Archimedes principle of displacement. That is, the mass of the boat sailing into the gondola will displace an exactly proportional volume of water so that the final combination of 'boat plus water' balances the original total mass.
Each gondola runs on small wheels that fit into a single curved rail fixed on the inner edge of the opening on each arm. In theory, this should be sufficient to ensure that they always remain horizontal, but any friction or sudden movement could cause the gondola to stick or tilt. To ensure that this could never happen and that the water and boats always remain perfectly level throughout the whole cycle, a series of linked cogs acts as a back up.
Hidden at each end, behind the arm nearest the aqueduct, are two 8m diameter cogs to which one end of each gondola is attached. A third, exactly equivalent sized cog is in the centre, attached to the main fixed upright. Two smaller cogs are fitted in the spaces between, with each cog having teeth that fit into the adjacent cog and push against each other, turning around the one fixed central one. The two gondolas, being attached to the outer cogs, will therefore turn at precisely the same speed, but in the opposite direction to the Wheel.
Given the precise balancing of the gondolas and this simple but clever system of cogs, a very small amount of energy is actually then required to turn the Wheel. In fact, it is a group of ten hydraulic motors located within the central spine that provide the small amount, just 1.5kw, of electricity to turn it.
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Actually a part of the local public transportation system. The passengers were a mixture of obvious tourists, obvious local commuters, and probably plenty of non-noticeable people falling somewhere in between.
Getting ready for the release of Gears of War 3 I decided to have a photo shoot with my COG tags and controller.
At this moment, Hadley jumping up to help me find a cog made me feel extra special. This week, it could easily also put me in tears. It's the little moments that catch me unaware. Hearing the phone ring and know it can no longer be from my brother. Looking at pictures of us as kids, hand-in-hand. Just the little things.
ANSH: cog
Detail view of the Swiss cog railway system that makes the very steep descent from Kleine Scheidigg down to Lauterbrunnen
After dealing with cops, subways, endless amount of walking, weird looks, and one friendly drug dealer we got our hands on the Union Square COG.
Little Cog (meaning a little boy version of the otherwise grownup Cog) reads a Transformers comic book, and sees the robots fighting over a cowgirl the Decepticons are trying to hurt or kill. Fun!
This is a NIB Shimano Dura Ace 10 Track Sprocket.
Model SS-7000.
Material is Chromium Molybdenum steel.
Thread is BC33 x 24 T.P.I.
Sprockets can be found with a teeth count of 14T and 22,0g, 15T and 26,8g, 16T and 30,8g.
Cog performing at a sold out Billboards, Melbourne June 2010 for their 'The Sound Of Three - 12 Years With You' Tour
Nice half day out in Stafford to collect my work from the Shire Hall Gallery. Looked round the park and the charity shops etc. Home again by 2.30pm. Thankfully the boiler has been mended. Hazel had to stop at home to oversee that. Nice hot baths at long last!
One of the oldest cog railways of the world is in Mt Washington, New Hampshire. The engines are modernized from Steam to Bio-Diesel which are more efficient and environmentally friendly. These operators are extremely knowledgeable about the area and give an entertaining commentary throughout the climb to the summit.