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oldcorollas Forums Junkie Location: Kita-Ku, Sapporo, Japan Registered: January 2003	Re: TORQUE and shite stirring Wed, 25 June 2003 12:36 one last thing From WWW.HOWSTUFFWORKS.com How Horsepower Works by Marshall Brain Chances are you've heard about horsepower. Just about every car ad on TV mentions it, people talking about their cars bandy the word about and even most lawn mowers have a big sticker on them to tell you the horsepower rating. But what is horsepower, and what does the horsepower rating mean in terms of performance? In this edition of HowStuffWorks, you'll learn exactly what horsepower is and how you can apply it to your everyday life! Definition The term horsepower was invented by the engineer James Watt. Watt lived from 1736 to 1819 and is most famous for his work on improving the performance of steam engines. We are also reminded of him every day when we talk about 60-watt light bulbs. The story goes that Watt was working with ponies lifting coal at a coal mine, and he wanted a way to talk about the power available from one of these animals. He found that, on average, a mine pony could do 22,000 foot-pounds of work in a minute. He then increased that number by 50 percent and pegged the measurement of horsepower at 33,000 foot-pounds of work in one minute. It is that arbitrary unit of measure that has made its way down through the centuries and now appears on your car, your lawn mower, your chain saw and even in some cases your vacuum cleaner! What horsepower means is this: In Watt's judgement, one horse can do 33,000 foot-pounds of work every minute. So, imagine a horse raising coal out of a coal mine as shown above. A horse exerting 1 horsepower can raise 330 pounds of coal 100 feet in a minute, or 33 pounds of coal 1,000 feet in one minute, or 1,000 pounds 33 feet in one minute. You can make up whatever combination of feet and pounds you like. As long as the product is 33,000 foot-pounds in one minute, you have a horsepower. You can probably imagine that you would not want to load 33,000 pounds of coal in the bucket and ask the horse to move it 1 foot in a minute because the horse couldn't budge that big a load. You can probably also imagine that you would not want to put 1 pound of coal in the bucket and ask the horse to run 33,000 feet in one minute, since that translates into 375 miles per hour and horses can't run that fast. However, if you have read How a Block and Tackle Works, you know that with a block and tackle you can easily trade perceived weight for distance using an arrangement of pulleys. So you could create a block and tackle system that puts a comfortable amount of weight on the horse at a comfortable speed no matter how much weight is actually in the bucket. (fast horses? gearing with block and tackle.. hmmmm) Horsepower can be converted into other units as well. For example: 1 horsepower is equivalent to 746 watts. So if you took a 1-horsepower horse and put it on a treadmill, it could operate a generator producing a continuous 746 watts. 1 horsepower (over the course of an hour) is equivalent to 2,545 BTU (British thermal units). If you took that 746 watts and ran it through an electric heater for an hour, it would produce 2,545 BTU (where a BTU is the amount of energy needed to raise the temperature of 1 pound of water 1 degree F). One BTU is equal to 1,055 joules, or 252 gram-calories or 0.252 food Calories. Presumably, a horse producing 1 horsepower would burn 641 Calories in one hour if it were 100-percent efficient. [Report message to a moderator]

	Subject	Poster	Date
	TORQUE	BAD22	Sat, 21 June 2003 04:43
	Re: TORQUE	oldcorollas	Sat, 21 June 2003 07:20
	Re: TORQUE	trent_kershaw	Sat, 21 June 2003 09:52
	Re: TORQUE	wilbo666	Sat, 21 June 2003 12:29
	Re: TORQUE	BAD22	Sat, 21 June 2003 13:06
	Re: TORQUE	TA22-3SGTE	Sat, 21 June 2003 13:20
	Re: TORQUE	gianttomato	Sun, 22 June 2003 02:18
	Re: TORQUE	rusty	Mon, 23 June 2003 19:37
	Re: TORQUE	BAD22	Tue, 24 June 2003 01:57
	Re: TORQUE	oldcorollas	Tue, 24 June 2003 07:17
	Re: TORQUE	rusty	Tue, 24 June 2003 08:33
	Re: TORQUE	oldcorollas	Tue, 24 June 2003 09:32
	Re: TORQUE	gianttomato	Tue, 24 June 2003 09:42
	Re: TORQUE	Gremlin	Thu, 26 June 2003 02:16
	Re: TORQUE	rusty	Tue, 24 June 2003 10:29
	Re: TORQUE	oldcorollas	Tue, 24 June 2003 11:12
	Re: TORQUE	gianttomato	Tue, 24 June 2003 11:46
	Re: TORQUE	oldcorollas	Tue, 24 June 2003 12:01
	Re: TORQUE	trent_kershaw	Tue, 24 June 2003 14:03
	Re: TORQUE	NO-18r	Sat, 21 June 2003 08:48
	Re: TORQUE	BAD22	Sat, 21 June 2003 08:49
	Re: TORQUE	manipulate	Sat, 21 June 2003 08:51
	Re: TORQUE	manipulate	Sat, 21 June 2003 13:10
	Re: TORQUE	BAD22	Sat, 21 June 2003 13:12
	Re: TORQUE	cam_RA40	Sat, 21 June 2003 23:17
	Re: TORQUE	JDM hachi	Sat, 21 June 2003 22:52
	Re: TORQUE	manipulate	Sun, 22 June 2003 01:55
	Re: TORQUE	charliechalk	Sun, 22 June 2003 11:26
	Re: TORQUE	BAD22	Sun, 22 June 2003 15:58
	Re: TORQUE	gianttomato	Mon, 23 June 2003 01:05
	Re: TORQUE	charliechalk	Mon, 23 June 2003 08:06
	Re: TORQUE	BAD22	Mon, 23 June 2003 10:00
	Re: TORQUE	Super Jamie	Tue, 24 June 2003 11:04
	Re: TORQUE	kingmick	Tue, 24 June 2003 12:18
	Re: TORQUE	THE WITZL	Tue, 24 June 2003 12:27
	Re: TORQUE	trent_kershaw	Tue, 24 June 2003 12:44
	Re: TORQUE	THE WITZL	Tue, 24 June 2003 13:06
	Re: TORQUE	rusty	Tue, 24 June 2003 16:35
	Re: TORQUE	juzzo84	Tue, 24 June 2003 21:08
	Re: TORQUE	boudan	Tue, 24 June 2003 22:49
	Re: TORQUE	Super Jamie	Wed, 25 June 2003 07:26
	Re: TORQUE and shite stirring	oldcorollas	Wed, 25 June 2003 12:27
	Re: TORQUE and shite stirring	oldcorollas	Wed, 25 June 2003 12:36
	Re: TORQUE	boudan	Thu, 26 June 2003 00:37
	Re: TORQUE	bayka	Wed, 25 June 2003 17:41
	Re: TORQUE	Norbie	Wed, 25 June 2003 22:37
	Re: TORQUE	dar_sbb	Thu, 26 June 2003 01:58
	Re: TORQUE	bayka	Thu, 26 June 2003 05:49
	Re: flat TORQUE curves	oldcorollas	Thu, 26 June 2003 06:23
	Re: flat TORQUE curves	Nark	Thu, 26 June 2003 06:45
	Re: flat TORQUE curves	oldcorollas	Thu, 26 June 2003 07:03

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