Re: Altima SE V-6 vs. Accord LX V-6
 

I also bought the Accord EX V6 in February. It runs on REGULAR gas,
unlike the 3.5 liter Altima.

If you want a faster Accord, you need the $30,000 made-in-Japan '05
hybrid. Apparently it'll spin the wheels from a stop just fine.

JM

Re: Altima SE V-6 vs. Accord LX V-6
 

I also bought the Accord EX V6 in February. It runs on REGULAR gas,
unlike the 3.5 liter Altima.

If you want a faster Accord, you need the $30,000 made-in-Japan '05
hybrid. Apparently it'll spin the wheels from a stop just fine.

JM

Re: Altima SE V-6 vs. Accord LX V-6
 

You are so wrong. Horsepower is everything. Since the Altima has a 3.5 L vs the
Accord's 3.0 L, the Altima has more low end power. It would take off at the line
faster. Every gear changes reduce the engine's rpm. This benefit bigger engines
because they have more hp at lower rpm.

At 1000 rpm, a 4 L engine would make 2x as much torque as a 2 L engine. But, for
some reason beyond my comprehension, people don't realize that it make as much
as 2x the power too. Torque only twist, but power moves things.

I could make more torque on my bicycle than the Altima's engine, but there is no
way my 1/3 hp could move the Altima as fast.

Hawaii_SE-R wrote:

> Horsepower is not everything. The Honda falls behind primarily due to less
> torque. Accord has 240hp/212tq while the Altima has 250hp/249tq. Torque
> affects acceleration directly by the sheer ability to move mass. With 15%
> less torque, it should be obvious why the Altima will out accelerate the
> Accord. Gearing would also play a part.

Re: Altima SE V-6 vs. Accord LX V-6
 

You are so wrong. Horsepower is everything. Since the Altima has a 3.5 L vs the
Accord's 3.0 L, the Altima has more low end power. It would take off at the line
faster. Every gear changes reduce the engine's rpm. This benefit bigger engines
because they have more hp at lower rpm.

At 1000 rpm, a 4 L engine would make 2x as much torque as a 2 L engine. But, for
some reason beyond my comprehension, people don't realize that it make as much
as 2x the power too. Torque only twist, but power moves things.

I could make more torque on my bicycle than the Altima's engine, but there is no
way my 1/3 hp could move the Altima as fast.

Hawaii_SE-R wrote:

> Horsepower is not everything. The Honda falls behind primarily due to less
> torque. Accord has 240hp/212tq while the Altima has 250hp/249tq. Torque
> affects acceleration directly by the sheer ability to move mass. With 15%
> less torque, it should be obvious why the Altima will out accelerate the
> Accord. Gearing would also play a part.

Re: Altima SE V-6 vs. Accord LX V-6
 

"Sean Dinh" <"seanny"@dinh@znet.com> wrote in message
news:1102464115.67875@news-1.nethere.net...
> You are so wrong. Horsepower is everything. Since the Altima has a 3.5 L
vs the
> Accord's 3.0 L, the Altima has more low end power. It would take off at
the line
> faster.

Actually torque is much more important at the lower rpm than you seem to
understand. In fact, that low end power you are thinking of is actually
more torque than anything else. Torque *is* a specific measurement of the
vehicle's ability to push/pull an object/weight from a stop or lower speed.
You will reach the peak torque of an engine in the lower rpm range, exactly
where most of your acceleration occurs, while your peak horsepower occurs in
the upper rpm range, where you will accelerate slower. Don't beleive me?
Look at Horsepower and Torque charts and you will see where the peaks occur.

>Every gear changes reduce the engine's rpm. This benefit bigger engines
> because they have more hp at lower rpm.

Why does this occur? You want to drop your rpms to a point where you can
take the most advantage of torque and horsepower, usually around 5200rpm, to
accelerate. Not saying that horsepower does nothing, in fact it does help
sustain and increase speed at the upper rpm when the vehicle is already
moving. Think of horsepower as related to the top speed of the vehicle.
BTW, just because an engine is bigger, doesn't mean it has more power.

> At 1000 rpm, a 4 L engine would make 2x as much torque as a 2 L engine.
But, for
> some reason beyond my comprehension, people don't realize that it make as
much
> as 2x the power too. Torque only twist, but power moves things.

Actually, just because and engine is twice the size of another doesn't mean
that it is twice as powerful. Much of an engines abilitly is based on it's
design. If your idea held true, all 2 liter engines would put out the same
power. BTW, what do you think torque is twisting? I would say it's the
axles which is connected to the wheels which moves a car forward. How does
horsepower move the car?

> I could make more torque on my bicycle than the Altima's engine, but there
is no
> way my 1/3 hp could move the Altima as fast.

I highly doubt you could produce more torque than the VQ35DE on your
bicycle.

If you want to get a little more technical:
http://www.datsuns.com/Tech/tech_dept.htm

> Hawaii_SE-R wrote:
>
> > Horsepower is not everything. The Honda falls behind primarily due to
less
> > torque. Accord has 240hp/212tq while the Altima has 250hp/249tq.
Torque
> > affects acceleration directly by the sheer ability to move mass. With
15%
> > less torque, it should be obvious why the Altima will out accelerate the
> > Accord. Gearing would also play a part.
>

Re: Altima SE V-6 vs. Accord LX V-6
 

"Sean Dinh" <"seanny"@dinh@znet.com> wrote in message
news:1102464115.67875@news-1.nethere.net...
> You are so wrong. Horsepower is everything. Since the Altima has a 3.5 L
vs the
> Accord's 3.0 L, the Altima has more low end power. It would take off at
the line
> faster.

Actually torque is much more important at the lower rpm than you seem to
understand. In fact, that low end power you are thinking of is actually
more torque than anything else. Torque *is* a specific measurement of the
vehicle's ability to push/pull an object/weight from a stop or lower speed.
You will reach the peak torque of an engine in the lower rpm range, exactly
where most of your acceleration occurs, while your peak horsepower occurs in
the upper rpm range, where you will accelerate slower. Don't beleive me?
Look at Horsepower and Torque charts and you will see where the peaks occur.

>Every gear changes reduce the engine's rpm. This benefit bigger engines
> because they have more hp at lower rpm.

Why does this occur? You want to drop your rpms to a point where you can
take the most advantage of torque and horsepower, usually around 5200rpm, to
accelerate. Not saying that horsepower does nothing, in fact it does help
sustain and increase speed at the upper rpm when the vehicle is already
moving. Think of horsepower as related to the top speed of the vehicle.
BTW, just because an engine is bigger, doesn't mean it has more power.

> At 1000 rpm, a 4 L engine would make 2x as much torque as a 2 L engine.
But, for
> some reason beyond my comprehension, people don't realize that it make as
much
> as 2x the power too. Torque only twist, but power moves things.

Actually, just because and engine is twice the size of another doesn't mean
that it is twice as powerful. Much of an engines abilitly is based on it's
design. If your idea held true, all 2 liter engines would put out the same
power. BTW, what do you think torque is twisting? I would say it's the
axles which is connected to the wheels which moves a car forward. How does
horsepower move the car?

> I could make more torque on my bicycle than the Altima's engine, but there
is no
> way my 1/3 hp could move the Altima as fast.

I highly doubt you could produce more torque than the VQ35DE on your
bicycle.

If you want to get a little more technical:
http://www.datsuns.com/Tech/tech_dept.htm

> Hawaii_SE-R wrote:
>
> > Horsepower is not everything. The Honda falls behind primarily due to
less
> > torque. Accord has 240hp/212tq while the Altima has 250hp/249tq.
Torque
> > affects acceleration directly by the sheer ability to move mass. With
15%
> > less torque, it should be obvious why the Altima will out accelerate the
> > Accord. Gearing would also play a part.
>

Re: Altima SE V-6 vs. Accord LX V-6
 

Hawaii_SE-R wrote:

> "Sean Dinh" <"seanny"@dinh@znet.com> wrote in message
> news:1102464115.67875@news-1.nethere.net...
> > You are so wrong. Horsepower is everything. Since the Altima has a 3.5 L
> vs the
> > Accord's 3.0 L, the Altima has more low end power. It would take off at
> the line
> > faster.
>
> Actually torque is much more important at the lower rpm than you seem to
> understand. In fact, that low end power you are thinking of is actually
> more torque than anything else. Torque *is* a specific measurement of the
> vehicle's ability to push/pull an object/weight from a stop or lower speed.
> You will reach the peak torque of an engine in the lower rpm range, exactly
> where most of your acceleration occurs, while your peak horsepower occurs in
> the upper rpm range, where you will accelerate slower. Don't beleive me?
> Look at Horsepower and Torque charts and you will see where the peaks occur.

Sean is correct and you are incorrect. Looking at a chart to find the torque
and hp peaks doesn't tell you where maximum acceleration occurs.
Easy to show from Newton's second law (F=ma) that maximum acceleration occurs at
the POWER peak in any gear. Sorry, but you just have to do the physics here.

>
>
> >Every gear changes reduce the engine's rpm. This benefit bigger engines
> > because they have more hp at lower rpm.
>
> Why does this occur? You want to drop your rpms to a point where you can
> take the most advantage of torque and horsepower, usually around 5200rpm, to
> accelerate. Not saying that horsepower does nothing, in fact it does help
> sustain and increase speed at the upper rpm when the vehicle is already
> moving. Think of horsepower as related to the top speed of the vehicle.
> BTW, just because an engine is bigger, doesn't mean it has more power.
>
> > At 1000 rpm, a 4 L engine would make 2x as much torque as a 2 L engine.
> But, for
> > some reason beyond my comprehension, people don't realize that it make as
> much
> > as 2x the power too. Torque only twist, but power moves things.
>
> Actually, just because and engine is twice the size of another doesn't mean
> that it is twice as powerful. Much of an engines abilitly is based on it's
> design. If your idea held true, all 2 liter engines would put out the same
> power. BTW, what do you think torque is twisting? I would say it's the
> axles which is connected to the wheels which moves a car forward. How does
> horsepower move the car?

Again, Sean is basically correct. The physics of combustion is a constant for
all engines so maximum PRESSURE within the cylinders without detonation is
basically a constant (all 2 liter engines don't put out the same power because
not everyone achieves the same volumetric efficiency, designs for premium fuel
etc) Torque is pressure x displacement - so yes, an engine twice the size puts
out twice the torque AND hp (hence acceleration) at a given rpm - provided
intake and exhaust systems give the same volumetric efficiency at that rpm.
These are all basic concepts for Engine Design 101.

>
>
> > I could make more torque on my bicycle than the Altima's engine, but there
> is no
> > way my 1/3 hp could move the Altima as fast.
>
> I highly doubt you could produce more torque than the VQ35DE on your
> bicycle.
>
> If you want to get a little more technical:
> http://www.datsuns.com/Tech/tech_dept.htm
>
> > Hawaii_SE-R wrote:
> >
> > > Horsepower is not everything. The Honda falls behind primarily due to
> less
> > > torque. Accord has 240hp/212tq while the Altima has 250hp/249tq.
> Torque
> > > affects acceleration directly by the sheer ability to move mass. With
> 15%
> > > less torque, it should be obvious why the Altima will out accelerate the
> > > Accord. Gearing would also play a part.
> >

Frank

Re: Altima SE V-6 vs. Accord LX V-6
 

Hawaii_SE-R wrote:

> "Sean Dinh" <"seanny"@dinh@znet.com> wrote in message
> news:1102464115.67875@news-1.nethere.net...
> > You are so wrong. Horsepower is everything. Since the Altima has a 3.5 L
> vs the
> > Accord's 3.0 L, the Altima has more low end power. It would take off at
> the line
> > faster.
>
> Actually torque is much more important at the lower rpm than you seem to
> understand. In fact, that low end power you are thinking of is actually
> more torque than anything else. Torque *is* a specific measurement of the
> vehicle's ability to push/pull an object/weight from a stop or lower speed.
> You will reach the peak torque of an engine in the lower rpm range, exactly
> where most of your acceleration occurs, while your peak horsepower occurs in
> the upper rpm range, where you will accelerate slower. Don't beleive me?
> Look at Horsepower and Torque charts and you will see where the peaks occur.

Sean is correct and you are incorrect. Looking at a chart to find the torque
and hp peaks doesn't tell you where maximum acceleration occurs.
Easy to show from Newton's second law (F=ma) that maximum acceleration occurs at
the POWER peak in any gear. Sorry, but you just have to do the physics here.

>
>
> >Every gear changes reduce the engine's rpm. This benefit bigger engines
> > because they have more hp at lower rpm.
>
> Why does this occur? You want to drop your rpms to a point where you can
> take the most advantage of torque and horsepower, usually around 5200rpm, to
> accelerate. Not saying that horsepower does nothing, in fact it does help
> sustain and increase speed at the upper rpm when the vehicle is already
> moving. Think of horsepower as related to the top speed of the vehicle.
> BTW, just because an engine is bigger, doesn't mean it has more power.
>
> > At 1000 rpm, a 4 L engine would make 2x as much torque as a 2 L engine.
> But, for
> > some reason beyond my comprehension, people don't realize that it make as
> much
> > as 2x the power too. Torque only twist, but power moves things.
>
> Actually, just because and engine is twice the size of another doesn't mean
> that it is twice as powerful. Much of an engines abilitly is based on it's
> design. If your idea held true, all 2 liter engines would put out the same
> power. BTW, what do you think torque is twisting? I would say it's the
> axles which is connected to the wheels which moves a car forward. How does
> horsepower move the car?

Again, Sean is basically correct. The physics of combustion is a constant for
all engines so maximum PRESSURE within the cylinders without detonation is
basically a constant (all 2 liter engines don't put out the same power because
not everyone achieves the same volumetric efficiency, designs for premium fuel
etc) Torque is pressure x displacement - so yes, an engine twice the size puts
out twice the torque AND hp (hence acceleration) at a given rpm - provided
intake and exhaust systems give the same volumetric efficiency at that rpm.
These are all basic concepts for Engine Design 101.

>
>
> > I could make more torque on my bicycle than the Altima's engine, but there
> is no
> > way my 1/3 hp could move the Altima as fast.
>
> I highly doubt you could produce more torque than the VQ35DE on your
> bicycle.
>
> If you want to get a little more technical:
> http://www.datsuns.com/Tech/tech_dept.htm
>
> > Hawaii_SE-R wrote:
> >
> > > Horsepower is not everything. The Honda falls behind primarily due to
> less
> > > torque. Accord has 240hp/212tq while the Altima has 250hp/249tq.
> Torque
> > > affects acceleration directly by the sheer ability to move mass. With
> 15%
> > > less torque, it should be obvious why the Altima will out accelerate the
> > > Accord. Gearing would also play a part.
> >

Frank

Re: Altima SE V-6 vs. Accord LX V-6
 

1. Torque, by definition, is just a term to describe the strength of the
twisting motion. It has nothing to do with acceleration. Just because there are
a lot of idiots, including magazine editors, miss understand the term, that does
not make it right. You should replace your "torque" with "horsepower".

2. At low rpm, like 1k-3k rpm, most engine put out the same horsepower/volume.
Hence, double the engine, you double the power. What differentiate a good engine
from an average engine is how much power it could produce at high rpm, like
above 5200. This region of rpm is where VTEC and Vanos and such enhance engine
power.

3. 100 lb person on a 3' crank on a bicycle produce 300 ft*lb of torque. A 300
lb person standing on a 1' crank produce 300 ft*lb of torque. I, standing on a
4' breaker bar on the wheel axle produce more torque than a 3.5 L Altima.
However, the car doesn't move much because I make little horsepower. There is no
doubt that I could produce 1000 ft*lb. All I need is to extend the crank to 10'.

Hawaii_SE-R wrote:

> Actually torque is much more important at the lower rpm than you seem to
> understand. In fact, that low end power you are thinking of is actually
> more torque than anything else. Torque *is* a specific measurement of the
> vehicle's ability to push/pull an object/weight from a stop or lower speed.
> You will reach the peak torque of an engine in the lower rpm range, exactly
> where most of your acceleration occurs, while your peak horsepower occurs in
> the upper rpm range, where you will accelerate slower. Don't beleive me?
> Look at Horsepower and Torque charts and you will see where the peaks occur.
>
> >Every gear changes reduce the engine's rpm. This benefit bigger engines
> > because they have more hp at lower rpm.
>
> Why does this occur? You want to drop your rpms to a point where you can
> take the most advantage of torque and horsepower, usually around 5200rpm, to
> accelerate. Not saying that horsepower does nothing, in fact it does help
> sustain and increase speed at the upper rpm when the vehicle is already
> moving. Think of horsepower as related to the top speed of the vehicle.
> BTW, just because an engine is bigger, doesn't mean it has more power.
>
> > At 1000 rpm, a 4 L engine would make 2x as much torque as a 2 L engine.
> But, for
> > some reason beyond my comprehension, people don't realize that it make as
> much
> > as 2x the power too. Torque only twist, but power moves things.
>
> Actually, just because and engine is twice the size of another doesn't mean
> that it is twice as powerful. Much of an engines abilitly is based on it's
> design. If your idea held true, all 2 liter engines would put out the same
> power. BTW, what do you think torque is twisting? I would say it's the
> axles which is connected to the wheels which moves a car forward. How does
> horsepower move the car?
>
> > I could make more torque on my bicycle than the Altima's engine, but there
> is no
> > way my 1/3 hp could move the Altima as fast.
>
> I highly doubt you could produce more torque than the VQ35DE on your
> bicycle.
>
> If you want to get a little more technical:
> http://www.datsuns.com/Tech/tech_dept.htm

Re: Altima SE V-6 vs. Accord LX V-6
 

1. Torque, by definition, is just a term to describe the strength of the
twisting motion. It has nothing to do with acceleration. Just because there are
a lot of idiots, including magazine editors, miss understand the term, that does
not make it right. You should replace your "torque" with "horsepower".

2. At low rpm, like 1k-3k rpm, most engine put out the same horsepower/volume.
Hence, double the engine, you double the power. What differentiate a good engine
from an average engine is how much power it could produce at high rpm, like
above 5200. This region of rpm is where VTEC and Vanos and such enhance engine
power.

3. 100 lb person on a 3' crank on a bicycle produce 300 ft*lb of torque. A 300
lb person standing on a 1' crank produce 300 ft*lb of torque. I, standing on a
4' breaker bar on the wheel axle produce more torque than a 3.5 L Altima.
However, the car doesn't move much because I make little horsepower. There is no
doubt that I could produce 1000 ft*lb. All I need is to extend the crank to 10'.

Hawaii_SE-R wrote:

> Actually torque is much more important at the lower rpm than you seem to
> understand. In fact, that low end power you are thinking of is actually
> more torque than anything else. Torque *is* a specific measurement of the
> vehicle's ability to push/pull an object/weight from a stop or lower speed.
> You will reach the peak torque of an engine in the lower rpm range, exactly
> where most of your acceleration occurs, while your peak horsepower occurs in
> the upper rpm range, where you will accelerate slower. Don't beleive me?
> Look at Horsepower and Torque charts and you will see where the peaks occur.
>
> >Every gear changes reduce the engine's rpm. This benefit bigger engines
> > because they have more hp at lower rpm.
>
> Why does this occur? You want to drop your rpms to a point where you can
> take the most advantage of torque and horsepower, usually around 5200rpm, to
> accelerate. Not saying that horsepower does nothing, in fact it does help
> sustain and increase speed at the upper rpm when the vehicle is already
> moving. Think of horsepower as related to the top speed of the vehicle.
> BTW, just because an engine is bigger, doesn't mean it has more power.
>
> > At 1000 rpm, a 4 L engine would make 2x as much torque as a 2 L engine.
> But, for
> > some reason beyond my comprehension, people don't realize that it make as
> much
> > as 2x the power too. Torque only twist, but power moves things.
>
> Actually, just because and engine is twice the size of another doesn't mean
> that it is twice as powerful. Much of an engines abilitly is based on it's
> design. If your idea held true, all 2 liter engines would put out the same
> power. BTW, what do you think torque is twisting? I would say it's the
> axles which is connected to the wheels which moves a car forward. How does
> horsepower move the car?
>
> > I could make more torque on my bicycle than the Altima's engine, but there
> is no
> > way my 1/3 hp could move the Altima as fast.
>
> I highly doubt you could produce more torque than the VQ35DE on your
> bicycle.
>
> If you want to get a little more technical:
> http://www.datsuns.com/Tech/tech_dept.htm

Re: Altima SE V-6 vs. Accord LX V-6
 

Horespower does not get you off the line or out of the corners. It is
torque.

Sean Dinh wrote:

> 1. Torque, by definition, is just a term to describe the strength of the
> twisting motion. It has nothing to do with acceleration. Just because there are
> a lot of idiots, including magazine editors, miss understand the term, that does
> not make it right. You should replace your "torque" with "horsepower".
>
> 2. At low rpm, like 1k-3k rpm, most engine put out the same horsepower/volume.
> Hence, double the engine, you double the power. What differentiate a good engine
> from an average engine is how much power it could produce at high rpm, like
> above 5200. This region of rpm is where VTEC and Vanos and such enhance engine
> power.
>
> 3. 100 lb person on a 3' crank on a bicycle produce 300 ft*lb of torque. A 300
> lb person standing on a 1' crank produce 300 ft*lb of torque. I, standing on a
> 4' breaker bar on the wheel axle produce more torque than a 3.5 L Altima.
> However, the car doesn't move much because I make little horsepower. There is no
> doubt that I could produce 1000 ft*lb. All I need is to extend the crank to 10'.
>
> Hawaii_SE-R wrote:
>
>
>>Actually torque is much more important at the lower rpm than you seem to
>>understand. In fact, that low end power you are thinking of is actually
>>more torque than anything else. Torque *is* a specific measurement of the
>>vehicle's ability to push/pull an object/weight from a stop or lower speed.
>>You will reach the peak torque of an engine in the lower rpm range, exactly
>>where most of your acceleration occurs, while your peak horsepower occurs in
>>the upper rpm range, where you will accelerate slower. Don't beleive me?
>>Look at Horsepower and Torque charts and you will see where the peaks occur.
>>
>>
>>>Every gear changes reduce the engine's rpm. This benefit bigger engines
>>>because they have more hp at lower rpm.
>>>
>>Why does this occur? You want to drop your rpms to a point where you can
>>take the most advantage of torque and horsepower, usually around 5200rpm, to
>>accelerate. Not saying that horsepower does nothing, in fact it does help
>>sustain and increase speed at the upper rpm when the vehicle is already
>>moving. Think of horsepower as related to the top speed of the vehicle.
>>BTW, just because an engine is bigger, doesn't mean it has more power.
>>
>>
>>>At 1000 rpm, a 4 L engine would make 2x as much torque as a 2 L engine.
>>>
>>But, for
>>
>>>some reason beyond my comprehension, people don't realize that it make as
>>>
>>much
>>
>>>as 2x the power too. Torque only twist, but power moves things.
>>>
>>Actually, just because and engine is twice the size of another doesn't mean
>>that it is twice as powerful. Much of an engines abilitly is based on it's
>>design. If your idea held true, all 2 liter engines would put out the same
>>power. BTW, what do you think torque is twisting? I would say it's the
>>axles which is connected to the wheels which moves a car forward. How does
>>horsepower move the car?
>>
>>
>>>I could make more torque on my bicycle than the Altima's engine, but there
>>>
>>is no
>>
>>>way my 1/3 hp could move the Altima as fast.
>>>
>>I highly doubt you could produce more torque than the VQ35DE on your
>>bicycle.
>>
>>If you want to get a little more technical:
>>http://www.datsuns.com/Tech/tech_dept.htm
>>
>

Re: Altima SE V-6 vs. Accord LX V-6
 

Horespower does not get you off the line or out of the corners. It is
torque.

Sean Dinh wrote:

> 1. Torque, by definition, is just a term to describe the strength of the
> twisting motion. It has nothing to do with acceleration. Just because there are
> a lot of idiots, including magazine editors, miss understand the term, that does
> not make it right. You should replace your "torque" with "horsepower".
>
> 2. At low rpm, like 1k-3k rpm, most engine put out the same horsepower/volume.
> Hence, double the engine, you double the power. What differentiate a good engine
> from an average engine is how much power it could produce at high rpm, like
> above 5200. This region of rpm is where VTEC and Vanos and such enhance engine
> power.
>
> 3. 100 lb person on a 3' crank on a bicycle produce 300 ft*lb of torque. A 300
> lb person standing on a 1' crank produce 300 ft*lb of torque. I, standing on a
> 4' breaker bar on the wheel axle produce more torque than a 3.5 L Altima.
> However, the car doesn't move much because I make little horsepower. There is no
> doubt that I could produce 1000 ft*lb. All I need is to extend the crank to 10'.
>
> Hawaii_SE-R wrote:
>
>
>>Actually torque is much more important at the lower rpm than you seem to
>>understand. In fact, that low end power you are thinking of is actually
>>more torque than anything else. Torque *is* a specific measurement of the
>>vehicle's ability to push/pull an object/weight from a stop or lower speed.
>>You will reach the peak torque of an engine in the lower rpm range, exactly
>>where most of your acceleration occurs, while your peak horsepower occurs in
>>the upper rpm range, where you will accelerate slower. Don't beleive me?
>>Look at Horsepower and Torque charts and you will see where the peaks occur.
>>
>>
>>>Every gear changes reduce the engine's rpm. This benefit bigger engines
>>>because they have more hp at lower rpm.
>>>
>>Why does this occur? You want to drop your rpms to a point where you can
>>take the most advantage of torque and horsepower, usually around 5200rpm, to
>>accelerate. Not saying that horsepower does nothing, in fact it does help
>>sustain and increase speed at the upper rpm when the vehicle is already
>>moving. Think of horsepower as related to the top speed of the vehicle.
>>BTW, just because an engine is bigger, doesn't mean it has more power.
>>
>>
>>>At 1000 rpm, a 4 L engine would make 2x as much torque as a 2 L engine.
>>>
>>But, for
>>
>>>some reason beyond my comprehension, people don't realize that it make as
>>>
>>much
>>
>>>as 2x the power too. Torque only twist, but power moves things.
>>>
>>Actually, just because and engine is twice the size of another doesn't mean
>>that it is twice as powerful. Much of an engines abilitly is based on it's
>>design. If your idea held true, all 2 liter engines would put out the same
>>power. BTW, what do you think torque is twisting? I would say it's the
>>axles which is connected to the wheels which moves a car forward. How does
>>horsepower move the car?
>>
>>
>>>I could make more torque on my bicycle than the Altima's engine, but there
>>>
>>is no
>>
>>>way my 1/3 hp could move the Altima as fast.
>>>
>>I highly doubt you could produce more torque than the VQ35DE on your
>>bicycle.
>>
>>If you want to get a little more technical:
>>http://www.datsuns.com/Tech/tech_dept.htm
>>
>

Re: Altima SE V-6 vs. Accord LX V-6
 

Raybender <raybender@sbcglobal.net> floridly penned in
news:41B787E7.1786E96@sbcglobal.net:


> Sean is correct and you are incorrect. Looking at a chart to find the
> torque and hp peaks doesn't tell you where maximum acceleration
> occurs. Easy to show from Newton's second law (F=ma) that maximum
> acceleration occurs at the POWER peak in any gear. Sorry, but you
> just have to do the physics here.


Also do some reading:
http://tinyurl.com/5hgqe

--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

Re: Altima SE V-6 vs. Accord LX V-6
 

Raybender <raybender@sbcglobal.net> floridly penned in
news:41B787E7.1786E96@sbcglobal.net:


> Sean is correct and you are incorrect. Looking at a chart to find the
> torque and hp peaks doesn't tell you where maximum acceleration
> occurs. Easy to show from Newton's second law (F=ma) that maximum
> acceleration occurs at the POWER peak in any gear. Sorry, but you
> just have to do the physics here.


Also do some reading:
http://tinyurl.com/5hgqe

--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

Re: Altima SE V-6 vs. Accord LX V-6
 

On Wed, 08 Dec 2004 23:02:01 GMT, Raybender <raybender@sbcglobal.net>
wrote:

>
>
>Hawaii_SE-R wrote:
>
>> "Sean Dinh" <"seanny"@dinh@znet.com> wrote in message
>> news:1102464115.67875@news-1.nethere.net...
>> > You are so wrong. Horsepower is everything. Since the Altima has a 3.5 L
>> vs the
>> > Accord's 3.0 L, the Altima has more low end power. It would take off at
>> the line
>> > faster.
>>
>> Actually torque is much more important at the lower rpm than you seem to
>> understand. In fact, that low end power you are thinking of is actually
>> more torque than anything else. Torque *is* a specific measurement of the
>> vehicle's ability to push/pull an object/weight from a stop or lower speed.
>> You will reach the peak torque of an engine in the lower rpm range, exactly
>> where most of your acceleration occurs, while your peak horsepower occurs in
>> the upper rpm range, where you will accelerate slower. Don't beleive me?
>> Look at Horsepower and Torque charts and you will see where the peaks occur.
>
>Sean is correct and you are incorrect. Looking at a chart to find the torque
>and hp peaks doesn't tell you where maximum acceleration occurs.
>Easy to show from Newton's second law (F=ma) that maximum acceleration occurs at
>the POWER peak in any gear. Sorry, but you just have to do the physics here.

I've wondered about torque and HP too and didn't know the answer but
would like to.

As you state, F = ma (force equals mass times acceleration)

So, a = F/m (acceleration equals force divided by mass).

To accelerate the car, we need F (force).

Torque is force times distance. T = Fd

Solving for F and plugging that into our acceleration equation, we get

a = T/d/m (acceleration equals torque divided by distance divided by
mass).

For your particular car, the distance and the mass don't change. Hence
acceleration depends on torque only.

As the car goes faster and faster, you need horsepower to maintain
that torque at the higher RPMs.

There's some interesting background at
http://science.howstuffworks.com/fpte.htm.