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#1
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![]() "Short Wave Sportfishing" wrote in message news ![]() On Fri, 8 Aug 2008 08:10:49 -0400, "Eisboch" wrote: "Tim" wrote in message ... On Aug 8, 1:01 am, "Eisboch" wrote: "Tim" wrote in message ... Did you ever wonder why the heater fan in your car operates from low- medium-high, while a typical box window fan operates from High-medium- low? I was just thinking about that. hmm.... Oh yeah, I never figured out how 8 "bits" could equal $1.00 either... We will all try to put your mind at ease: With the fans, the car is a DC motor and the window is AC. Starting torque is different. As for the bits ..... isn't 2 "bits" a quarter? But you can take a window fan and set it on "low" , plug it in, and it starts up jjust fine, though... True, but it's not particularly good for the motor. Ideally, it should start up on "high" to give max torque using all the windings of the motor. Then, it can be turned down. Not a big deal though ... most fans can handle it. I forget the mechanical stuff, but it takes something like 3 times the amount of power to get something in motion than it does to maintain that motion. Newton's Laws of Motion: force is redundant and subordinate to the conservation of momentum. Ipso facto, quid pro quo, illegitimi non carborundum. Carpe Diem. :) Burma Shave.... |
#2
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On Aug 8, 7:10 am, "Eisboch" wrote:
"Tim" wrote in message ... On Aug 8, 1:01 am, "Eisboch" wrote: "Tim" wrote in message ... Did you ever wonder why the heater fan in your car operates from low- medium-high, while a typical box window fan operates from High-medium- low? I was just thinking about that. hmm.... Oh yeah, I never figured out how 8 "bits" could equal $1.00 either... We will all try to put your mind at ease: With the fans, the car is a DC motor and the window is AC. Starting torque is different. As for the bits ..... isn't 2 "bits" a quarter? Eisboch But you can take a window fan and set it on "low" , plug it in, and it starts up jjust fine, though... True, but it's not particularly good for the motor. Eisboch But, Richard, we're talking about a cheap box fan, here.... |
#3
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posted to rec.boats
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On Fri, 8 Aug 2008 08:10:49 -0400, "Eisboch" wrote:
I forget the mechanical stuff, but it takes something like 3 times the amount of power to get something in motion than it does to maintain that motion. Not exactly. It is true that if you are sliding something, it will take more force, not power, to get it started than to maintain it in motion at minimum speed. As for power, that is rate of doing work. Work is force applied times distance moved. |
#4
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posted to rec.boats
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![]() "Richard Casady" wrote in message ... On Fri, 8 Aug 2008 08:10:49 -0400, "Eisboch" wrote: I forget the mechanical stuff, but it takes something like 3 times the amount of power to get something in motion than it does to maintain that motion. Not exactly. It is true that if you are sliding something, it will take more force, not power, to get it started than to maintain it in motion at minimum speed. As for power, that is rate of doing work. Work is force applied times distance moved. Ok. Ok. Lemmie try again. At the "low" setting, the fan will temporarily draw more current to produce the same power (watts) to get the stupid fan blade moving. Since the windings in these cheap fans are so wimpy to begin with, this ain't so good over the long term. Eisboch |
#5
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posted to rec.boats
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On Fri, 8 Aug 2008 08:10:49 -0400, "Eisboch" wrote:
True, but it's not particularly good for the motor. Ideally, it should start up on "high" to give max torque using all the windings of the motor. Then, it can be turned down. Not a big deal though ... most fans can handle it. I forget the mechanical stuff, but it takes something like 3 times the amount of power to get something in motion than it does to maintain that motion. Actually the only force required to maintain motion is that required to overcome friction or do work. Therefore the ratio is theoretically infinite if the fan operates in a vacuum and has frictionless bearings. |
#6
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posted to rec.boats
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On Aug 8, 7:05*am, Tim wrote:
On Aug 8, 1:01 am, "Eisboch" wrote: "Tim" wrote in message ... Did you ever wonder why the heater fan in your car operates from low- medium-high, while a typical *box window fan operates from High-medium- low? I was just thinking about that. hmm.... Oh yeah, I never figured out how 8 "bits" could equal $1.00 either... We will all try to put your mind at ease: With the fans, the car is a DC motor and the window is AC. * *Starting torque is different. As for the bits ..... isn't 2 "bits" a quarter? Eisboch But you can take a window fan and set it on "low" , plug it in, and it starts up jjust fine, though...- Hide quoted text - - Show quoted text - The Air filters we run here states in the instructions that it should be started in high and once running, can be turned down to med, or low... |
#7
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posted to rec.boats
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![]() wrote in message ... On Aug 8, 7:05 am, Tim wrote: On Aug 8, 1:01 am, "Eisboch" wrote: "Tim" wrote in message ... Did you ever wonder why the heater fan in your car operates from low- medium-high, while a typical box window fan operates from High-medium- low? I was just thinking about that. hmm.... Oh yeah, I never figured out how 8 "bits" could equal $1.00 either... We will all try to put your mind at ease: With the fans, the car is a DC motor and the window is AC. Starting torque is different. As for the bits ..... isn't 2 "bits" a quarter? Eisboch But you can take a window fan and set it on "low" , plug it in, and it starts up jjust fine, though...- Hide quoted text - - Show quoted text - The Air filters we run here states in the instructions that it should be started in high and once running, can be turned down to med, or low... Eisboch already mentioned that. |
#8
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posted to rec.boats
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On Thu, 7 Aug 2008 22:04:08 -0700 (PDT), Tim
wrote: Did you ever wonder why the heater fan in your car operates from low- medium-high, while a typical box window fan operates from High-medium- low? I was just thinking about that. hmm.... Oh yeah, I never figured out how 8 "bits" could equal $1.00 either... Believe it or not, it's related to the Spanish dollar or real. Back during the Spanish exploration of Mexico during the silver mining phase, silver was minted into coins - eight coins (or pieces of eight) to the Spanish dollar or real. Bit substituted for piece - just 8 bits to the dollar. This carried over to the American colonial days when Spanish dollars were considered more valuable and Colonial dollars. How it came to the lexicon of America was pretty simple - American/Spanish dollars were divided into "quarters" or two bits. Thus the rhyme - two bits, fours bits, eight bits, a dollar. Two bits equals .25¢. |
#9
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posted to rec.boats
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On Aug 8, 5:53 am, Short Wave Sportfishing
wrote: On Thu, 7 Aug 2008 22:04:08 -0700 (PDT), Tim wrote: Did you ever wonder why the heater fan in your car operates from low- medium-high, while a typical box window fan operates from High-medium- low? I was just thinking about that. hmm.... Oh yeah, I never figured out how 8 "bits" could equal $1.00 either... Believe it or not, it's related to the Spanish dollar or real. Back during the Spanish exploration of Mexico during the silver mining phase, silver was minted into coins - eight coins (or pieces of eight) to the Spanish dollar or real. Bit substituted for piece - just 8 bits to the dollar. This carried over to the American colonial days when Spanish dollars were considered more valuable and Colonial dollars. How it came to the lexicon of America was pretty simple - American/Spanish dollars were divided into "quarters" or two bits. Thus the rhyme - two bits, fours bits, eight bits, a dollar. Two bits equals .25¢. When do we start using Peso's? |
#10
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posted to rec.boats
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On Fri, 8 Aug 2008 04:00:53 -0700 (PDT), Tim
wrote: On Aug 8, 5:53 am, Short Wave Sportfishing wrote: On Thu, 7 Aug 2008 22:04:08 -0700 (PDT), Tim wrote: Did you ever wonder why the heater fan in your car operates from low- medium-high, while a typical box window fan operates from High-medium- low? I was just thinking about that. hmm.... Oh yeah, I never figured out how 8 "bits" could equal $1.00 either... Believe it or not, it's related to the Spanish dollar or real. Back during the Spanish exploration of Mexico during the silver mining phase, silver was minted into coins - eight coins (or pieces of eight) to the Spanish dollar or real. Bit substituted for piece - just 8 bits to the dollar. This carried over to the American colonial days when Spanish dollars were considered more valuable and Colonial dollars. How it came to the lexicon of America was pretty simple - American/Spanish dollars were divided into "quarters" or two bits. Thus the rhyme - two bits, fours bits, eight bits, a dollar. Two bits equals .25¢. When do we start using Peso's? When the Aztlan Revolution succeeds. |
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