Slashdot Mirror
Steam-Powered Car Breaks Century-Old Speed Record
mcgrew writes "New Scientist reports that a steam-powered car has broken the 1906 record of 204 km/hr (127 mph) for the fastest steam-powered automobile, the Stanley Steamer. The Inspiration made a top speed of 225 kilometres per hour (140 miles per hour) on August 26. 'The car's engine burns liquid petroleum gas to heat water in 12 suitcase-sized boilers, creating steam heated to 400C. The steam then drives a two-stage turbine that spins at 13,000 revolutions per minute to power its wheels.The FIA requires two 1.6-km-long runs to be performed in opposite directions — to cancel out any effect from wind — within 60 minutes.'"
The name of the bike you are, presumably, referring to is called a penny farthing. They worked by direct drive. The cranks were tied directly into the front hub. You would generally get the largest wheel your legs would allow so that you could travel as fast as possible. The bigger diameter of the front wheel the further you would go with one rotation.
Interestingly the first geared bicycles, that resemble the ones we ride now, were called safety bicycles. Presumably this was because you were closer to the ground and had less distance to fall. However the invention of gearing on the safety bicycle allowed a rider to travel much faster than would of even been possible on a penny farthing. Bicycles today are far more dangerous than a penny farthing. Even going downhill, the penny farthing rider is limited to how fast they can pedal (the cranks never stop spinning) but todays bicycles employ multiple gearing ratios and free wheels/hubs that allow for extremely fast speeds. As I understand it penny farthings quickly died out after the invention of the safety bicycle.
-Will
although i'd be REALLY impressed if someone invents a steam powered aircraft/ helicopter
Apparently both airplanes and helicopters have been powered by steam.
When our name is on the back of your car, we're behind you all the way!
Sure the temperature means something. You don't get steam above 212F without increasing the pressure. So the temp tells you roughly the pressure. I did a quick search for a chart, and it says 400 degrees would be around 235 PSIG. In comparison, your 600 PSIG boiler ran about 489 degrees and the 1000 PSIG ran about 546 degrees.
http://www.indpipe.com/images/PDF/steam_temperature_pressure_table.pdf
(Just the first link I found.)
In 1905, the British Admiralty announced all new ships of the line would be turbine driven.
Babcock & Wilcox built coal fired boilers through the 50's - most of these driving turbines.
By the time of the Stanley record, piston steam was on it's way out for capital ships
Now, some WWII naval ships used piston steam driven pumps for damage control, but it sounds like you're talking about main propulsion.