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#21
10-26-2005, 11:00 PM
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Re: Speed Limits
Actual research (yes, I'm too lazy to dig it up) suggests that when speed limits are increased, people over the age of 70, and males under the age of 25, crash more.
So, clearly science says that most of OOT would die in a glorious fireballs of overpriced petroleum products. 
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#22
10-26-2005, 11:36 PM
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Re: Speed Limits
[ QUOTE ]
[ QUOTE ] [ QUOTE ] [ QUOTE ] 2. fuel prices will increase---most automobiles have peak fuel efficiency between 55--65 mph and decrease in efficiency quite rapidly above that leading to more gas being consumed leading to an increase in prices. The rate at which we consume fuel will increase sharply possibly leading to [/ QUOTE ] That is because engines are being manufactured with speed limit in mind, if speed limit were to be raised I have no doubts we would have engines efficient at 65-70. [/ QUOTE ] A lot of it is a wind resistance thing. -James [/ QUOTE ] .5mV^2, right? [/ QUOTE ] Where the [censored] did you pull this from? This is part of a location/velocity/acceleration equation.
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#23
10-26-2005, 11:39 PM
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Re: Speed Limits
[ QUOTE ]
[ QUOTE ] [ QUOTE ] [ QUOTE ] [ QUOTE ] 2. fuel prices will increase---most automobiles have peak fuel efficiency between 55--65 mph and decrease in efficiency quite rapidly above that leading to more gas being consumed leading to an increase in prices. The rate at which we consume fuel will increase sharply possibly leading to [/ QUOTE ] That is because engines are being manufactured with speed limit in mind, if speed limit were to be raised I have no doubts we would have engines efficient at 65-70. [/ QUOTE ] A lot of it is a wind resistance thing. -James [/ QUOTE ] .5mV^2, right? [/ QUOTE ] Where the [censored] did you pull this from? This is part of a location/velocity/acceleration equation. [/ QUOTE ] Its units are energy. This is kinetic energy.
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#24
10-26-2005, 11:39 PM
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Re: Speed Limits
[ QUOTE ]
[ QUOTE ] I'm skeptical; do you have a reference? [/ QUOTE ] Not really, but you can google some papers on internal combustion engine efficiency and see that it's mostly a function of RPM. From this I've concluded that if a car's transmission was manufactured with a gear ratio which would allow 75mph speed with engine running at 2500 rpm (which seems to be the optimum setting for whatever reason) it would be most efficient at that speed. James is correct about air resistance though, but since right now cars are often designed with some sacrifices to air resistance for general looks I believe this could be overcome as well. [/ QUOTE ] Finally someone who knows what they're talking about (or at least finds a nut every once in a while).
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#25
10-26-2005, 11:42 PM
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Re: Speed Limits
[ QUOTE ]
[ QUOTE ] [ QUOTE ] [ QUOTE ] A lot of it is a wind resistance thing. -James [/ QUOTE ] .5mV^2, right? [/ QUOTE ] Where the [censored] did you pull this from? This is part of a location/velocity/acceleration equation. [/ QUOTE ] Its units are energy. [/ QUOTE ] Oh [censored]. I read it a little fast. It is kinetic energy. It's still way off, though.
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#26
10-26-2005, 11:45 PM
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Re: Speed Limits
[ QUOTE ]
[ QUOTE ] [ QUOTE ] I'm skeptical; do you have a reference? [/ QUOTE ] Not really, but you can google some papers on internal combustion engine efficiency and see that it's mostly a function of RPM. From this I've concluded that if a car's transmission was manufactured with a gear ratio which would allow 75mph speed with engine running at 2500 rpm (which seems to be the optimum setting for whatever reason) it would be most efficient at that speed. James is correct about air resistance though, but since right now cars are often designed with some sacrifices to air resistance for general looks I believe this could be overcome as well. [/ QUOTE ] Finally someone who knows what they're talking about (or at least finds a nut every once in a while). [/ QUOTE ] Don't give him too much credit, he is dr. retard after all.
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#27
10-26-2005, 11:52 PM
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Calling Ray Zee!
This thread needs Ray Zee. Maybe he can fill us in on the scene in Montana since they repealed the speed limit some years back.
Actually, every thread needs Ray Zee.
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#28
10-27-2005, 04:07 AM
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Re: Speed Limits
[ QUOTE ]
[ QUOTE ] [ QUOTE ] [ QUOTE ] [ QUOTE ] A lot of it is a wind resistance thing. -James [/ QUOTE ] .5mV^2, right? [/ QUOTE ] Where the [censored] did you pull this from? This is part of a location/velocity/acceleration equation. [/ QUOTE ] Its units are energy. [/ QUOTE ] Oh [censored]. I read it a little fast. It is kinetic energy. It's still way off, though. [/ QUOTE ] Forgive me if I don't remember the formula correctly. Oh [censored], I did get it wrong. lol. The force due to drag is what I meant to put there. Replace m with A.
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#30
10-27-2005, 04:18 AM
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Re: Speed Limits
[ QUOTE ]
[ QUOTE ] The force due to drag is what I meant to put there. Replace m with A. [/ QUOTE ] (1/2) AV^2? [/ QUOTE ] Pretty sure you're going to need a drag coefficient and the density of the fluid in the there somewhere as well.
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