musing about fuel savings
09-25-2005, 06:34 PM
#51
Guest
Posts: n/a
Re: musing about fuel savings
Well, no impatient SOBs actually. The truckers here are a lot slower than in
the US, doing 55-65 mph, so if you are polite and flash them to let them
know when they have over taken you enough, they give you a friendly wave or
left-right-left flash of the indicators.
Your truckers are downright scary when you are in a jeep doing 80 up a
hill... and can only see the letters "AC" of "Mack" in your rear view mirror
:-).
Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ
"Will Honea" <whonea@yahoo.com> wrote in message
news:JxX2tWiP5BNp-pn2-VbCwduROPchX@anon.none.net...
> Dave, how much of that fuel saving was attained by the impatient SOB
> on your bumper so close he was actually pushing you along (or the air
> pressure from his horn as he tried to speed you along)?
>
> I got bored one day and ran a quick anaylsis of the drag effect of a
> 6x6 flat surface (fair aeordynamic representation of a Jeep). Just
> figuring the total pressure was interesting. Air pressure varies with
> the square of the velocity, at least for the speed range we are
> talking about, so your results come pretty close to the energy
> difference between pushing that 6x6 sheet of plywood at 65 vs. 75 mph.
>
> I got similar results on a long trip - 600 miles with an average 30
> mph tail wind vs the return trip with calm winds.
>
> On Sun, 25 Sep 2005 18:53:09 UTC "Dave Milne"
> <jeep@_nospam_milne.info> wrote:
>
> > Been experimenting with exactly that. I used to get 19 mpg/US gallon at
a
> > carefree 75 mph and over the last 640 motorway miles, I have averaged a
> > little over 24 mpg/US gallon at an "eggshell on the throttle peddle"
60-65
> > mph. I was almost impressed with the TJs fuel consumption actually.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
> >
> > "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> > news:4336DF20.48E4BB2E@***.net...
> > > If you want to
> > > save of fuel, drive slower and/or take the weight off the car.
> >
> >
>
>
> --
> Will Honea
the US, doing 55-65 mph, so if you are polite and flash them to let them
know when they have over taken you enough, they give you a friendly wave or
left-right-left flash of the indicators.
Your truckers are downright scary when you are in a jeep doing 80 up a
hill... and can only see the letters "AC" of "Mack" in your rear view mirror
:-).
Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ
"Will Honea" <whonea@yahoo.com> wrote in message
news:JxX2tWiP5BNp-pn2-VbCwduROPchX@anon.none.net...
> Dave, how much of that fuel saving was attained by the impatient SOB
> on your bumper so close he was actually pushing you along (or the air
> pressure from his horn as he tried to speed you along)?
>
> I got bored one day and ran a quick anaylsis of the drag effect of a
> 6x6 flat surface (fair aeordynamic representation of a Jeep). Just
> figuring the total pressure was interesting. Air pressure varies with
> the square of the velocity, at least for the speed range we are
> talking about, so your results come pretty close to the energy
> difference between pushing that 6x6 sheet of plywood at 65 vs. 75 mph.
>
> I got similar results on a long trip - 600 miles with an average 30
> mph tail wind vs the return trip with calm winds.
>
> On Sun, 25 Sep 2005 18:53:09 UTC "Dave Milne"
> <jeep@_nospam_milne.info> wrote:
>
> > Been experimenting with exactly that. I used to get 19 mpg/US gallon at
a
> > carefree 75 mph and over the last 640 motorway miles, I have averaged a
> > little over 24 mpg/US gallon at an "eggshell on the throttle peddle"
60-65
> > mph. I was almost impressed with the TJs fuel consumption actually.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
> >
> > "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> > news:4336DF20.48E4BB2E@***.net...
> > > If you want to
> > > save of fuel, drive slower and/or take the weight off the car.
> >
> >
>
>
> --
> Will Honea
09-25-2005, 06:34 PM
#52
Guest
Posts: n/a
Re: musing about fuel savings
Well, no impatient SOBs actually. The truckers here are a lot slower than in
the US, doing 55-65 mph, so if you are polite and flash them to let them
know when they have over taken you enough, they give you a friendly wave or
left-right-left flash of the indicators.
Your truckers are downright scary when you are in a jeep doing 80 up a
hill... and can only see the letters "AC" of "Mack" in your rear view mirror
:-).
Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ
"Will Honea" <whonea@yahoo.com> wrote in message
news:JxX2tWiP5BNp-pn2-VbCwduROPchX@anon.none.net...
> Dave, how much of that fuel saving was attained by the impatient SOB
> on your bumper so close he was actually pushing you along (or the air
> pressure from his horn as he tried to speed you along)?
>
> I got bored one day and ran a quick anaylsis of the drag effect of a
> 6x6 flat surface (fair aeordynamic representation of a Jeep). Just
> figuring the total pressure was interesting. Air pressure varies with
> the square of the velocity, at least for the speed range we are
> talking about, so your results come pretty close to the energy
> difference between pushing that 6x6 sheet of plywood at 65 vs. 75 mph.
>
> I got similar results on a long trip - 600 miles with an average 30
> mph tail wind vs the return trip with calm winds.
>
> On Sun, 25 Sep 2005 18:53:09 UTC "Dave Milne"
> <jeep@_nospam_milne.info> wrote:
>
> > Been experimenting with exactly that. I used to get 19 mpg/US gallon at
a
> > carefree 75 mph and over the last 640 motorway miles, I have averaged a
> > little over 24 mpg/US gallon at an "eggshell on the throttle peddle"
60-65
> > mph. I was almost impressed with the TJs fuel consumption actually.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
> >
> > "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> > news:4336DF20.48E4BB2E@***.net...
> > > If you want to
> > > save of fuel, drive slower and/or take the weight off the car.
> >
> >
>
>
> --
> Will Honea
the US, doing 55-65 mph, so if you are polite and flash them to let them
know when they have over taken you enough, they give you a friendly wave or
left-right-left flash of the indicators.
Your truckers are downright scary when you are in a jeep doing 80 up a
hill... and can only see the letters "AC" of "Mack" in your rear view mirror
:-).
Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ
"Will Honea" <whonea@yahoo.com> wrote in message
news:JxX2tWiP5BNp-pn2-VbCwduROPchX@anon.none.net...
> Dave, how much of that fuel saving was attained by the impatient SOB
> on your bumper so close he was actually pushing you along (or the air
> pressure from his horn as he tried to speed you along)?
>
> I got bored one day and ran a quick anaylsis of the drag effect of a
> 6x6 flat surface (fair aeordynamic representation of a Jeep). Just
> figuring the total pressure was interesting. Air pressure varies with
> the square of the velocity, at least for the speed range we are
> talking about, so your results come pretty close to the energy
> difference between pushing that 6x6 sheet of plywood at 65 vs. 75 mph.
>
> I got similar results on a long trip - 600 miles with an average 30
> mph tail wind vs the return trip with calm winds.
>
> On Sun, 25 Sep 2005 18:53:09 UTC "Dave Milne"
> <jeep@_nospam_milne.info> wrote:
>
> > Been experimenting with exactly that. I used to get 19 mpg/US gallon at
a
> > carefree 75 mph and over the last 640 motorway miles, I have averaged a
> > little over 24 mpg/US gallon at an "eggshell on the throttle peddle"
60-65
> > mph. I was almost impressed with the TJs fuel consumption actually.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
> >
> > "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> > news:4336DF20.48E4BB2E@***.net...
> > > If you want to
> > > save of fuel, drive slower and/or take the weight off the car.
> >
> >
>
>
> --
> Will Honea
09-25-2005, 07:03 PM
#53
Guest
Posts: n/a
Re: musing about fuel savings
Clap Trap wrote:
> Real Jeeps have generators and amp gages, not alternators and dumba**
> voltmeters.
>
> L.W.(ßill) ------ III wrote:
> > Real Jeep don't give a sh*t about gas mileage and have huge
> > alternators and fans pulling at least ten horsepower.
> > God Bless America, Bill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Billy Ray wrote:
> >
> >>Real Jeeps don't have alternators, radio
> >>amplifiers, or off road lights
Yes but real off road vehicles don't have.....spark plugs.
09-25-2005, 07:03 PM
#54
Guest
Posts: n/a
Re: musing about fuel savings
Clap Trap wrote:
> Real Jeeps have generators and amp gages, not alternators and dumba**
> voltmeters.
>
> L.W.(ßill) ------ III wrote:
> > Real Jeep don't give a sh*t about gas mileage and have huge
> > alternators and fans pulling at least ten horsepower.
> > God Bless America, Bill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Billy Ray wrote:
> >
> >>Real Jeeps don't have alternators, radio
> >>amplifiers, or off road lights
Yes but real off road vehicles don't have.....spark plugs.
09-25-2005, 07:03 PM
#55
Guest
Posts: n/a
Re: musing about fuel savings
Clap Trap wrote:
> Real Jeeps have generators and amp gages, not alternators and dumba**
> voltmeters.
>
> L.W.(ßill) ------ III wrote:
> > Real Jeep don't give a sh*t about gas mileage and have huge
> > alternators and fans pulling at least ten horsepower.
> > God Bless America, Bill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Billy Ray wrote:
> >
> >>Real Jeeps don't have alternators, radio
> >>amplifiers, or off road lights
Yes but real off road vehicles don't have.....spark plugs.
09-25-2005, 07:05 PM
#56
Guest
Posts: n/a
Re: musing about fuel savings
L.W. ------ III (ßill) wrote:
> You know of a shop that will rewind an generator? Besides we all
> like charging at full charge at just above idle, rather than at cruising
> speed. Notice this conversion on the stockiest of Jeeps:
> http://www.apple.queensu.ca/CJ3B/Pho...dEngine220.jpg
> And yes, no Real Jeep uses a volt meter, all that tells you is the
> state of your battery, not whether you're charging seventy amps and
> using a hundred, like the amp meter will show that exact measurement in
> discharge.
MANY shops rewind Generators, look in Hemmings.
Having an ammeter AND a voltmeter is nice. Like having a thach and a
manifold pressure gauge, or a coolant temp and coolant pressure.
09-25-2005, 07:05 PM
#57
Guest
Posts: n/a
Re: musing about fuel savings
L.W. ------ III (ßill) wrote:
> You know of a shop that will rewind an generator? Besides we all
> like charging at full charge at just above idle, rather than at cruising
> speed. Notice this conversion on the stockiest of Jeeps:
> http://www.apple.queensu.ca/CJ3B/Pho...dEngine220.jpg
> And yes, no Real Jeep uses a volt meter, all that tells you is the
> state of your battery, not whether you're charging seventy amps and
> using a hundred, like the amp meter will show that exact measurement in
> discharge.
MANY shops rewind Generators, look in Hemmings.
Having an ammeter AND a voltmeter is nice. Like having a thach and a
manifold pressure gauge, or a coolant temp and coolant pressure.
09-25-2005, 07:05 PM
#58
Guest
Posts: n/a
Re: musing about fuel savings
L.W. ------ III (ßill) wrote:
> You know of a shop that will rewind an generator? Besides we all
> like charging at full charge at just above idle, rather than at cruising
> speed. Notice this conversion on the stockiest of Jeeps:
> http://www.apple.queensu.ca/CJ3B/Pho...dEngine220.jpg
> And yes, no Real Jeep uses a volt meter, all that tells you is the
> state of your battery, not whether you're charging seventy amps and
> using a hundred, like the amp meter will show that exact measurement in
> discharge.
MANY shops rewind Generators, look in Hemmings.
Having an ammeter AND a voltmeter is nice. Like having a thach and a
manifold pressure gauge, or a coolant temp and coolant pressure.
09-25-2005, 07:05 PM
#59
Guest
Posts: n/a
Re: musing about fuel savings
Bret Ludwig did pass the time by typing:
> Clap Trap wrote:
>> Real Jeeps have generators and amp gages, not alternators and dumba**
>> voltmeters.
>>
>> L.W.(ßill) ------ III wrote:
>>> Real Jeep don't give a sh*t about gas mileage and have huge
>>> alternators and fans pulling at least ten horsepower.
>>> Billy Ray wrote:
>>>
>>>> Real Jeeps don't have alternators, radio
>>>> amplifiers, or off road lights
>
> Yes but real off road vehicles don't have.....spark plugs.
Correct.
http://www.imh.org/imh/bw/mule.html
--
DougW
> Clap Trap wrote:
>> Real Jeeps have generators and amp gages, not alternators and dumba**
>> voltmeters.
>>
>> L.W.(ßill) ------ III wrote:
>>> Real Jeep don't give a sh*t about gas mileage and have huge
>>> alternators and fans pulling at least ten horsepower.
>>> Billy Ray wrote:
>>>
>>>> Real Jeeps don't have alternators, radio
>>>> amplifiers, or off road lights
>
> Yes but real off road vehicles don't have.....spark plugs.
Correct.
http://www.imh.org/imh/bw/mule.html
--
DougW
09-25-2005, 07:05 PM
#60
Guest
Posts: n/a
Re: musing about fuel savings
Bret Ludwig did pass the time by typing:
> Clap Trap wrote:
>> Real Jeeps have generators and amp gages, not alternators and dumba**
>> voltmeters.
>>
>> L.W.(ßill) ------ III wrote:
>>> Real Jeep don't give a sh*t about gas mileage and have huge
>>> alternators and fans pulling at least ten horsepower.
>>> Billy Ray wrote:
>>>
>>>> Real Jeeps don't have alternators, radio
>>>> amplifiers, or off road lights
>
> Yes but real off road vehicles don't have.....spark plugs.
Correct.
http://www.imh.org/imh/bw/mule.html
--
DougW
> Clap Trap wrote:
>> Real Jeeps have generators and amp gages, not alternators and dumba**
>> voltmeters.
>>
>> L.W.(ßill) ------ III wrote:
>>> Real Jeep don't give a sh*t about gas mileage and have huge
>>> alternators and fans pulling at least ten horsepower.
>>> Billy Ray wrote:
>>>
>>>> Real Jeeps don't have alternators, radio
>>>> amplifiers, or off road lights
>
> Yes but real off road vehicles don't have.....spark plugs.
Correct.
http://www.imh.org/imh/bw/mule.html
--
DougW