Actually it the mass required to be accelerated and how quickly it's
done that determines urban mileage. Since the piss-ant engines in the
smaller engined vehicles aren't capable of accelerating anything quickly
it's simply more difficult to get poor mileage, but the people who buy
them typically haven't a clue about what goes on under the hood anyway.
I was under the impression a significant amount of gas is simply wasted
while idling at traffic lights or in traffic jams. I forget where I read
it, but something between 15 and 20% of fuel is used while sitting still.
At four bucks for a gallon, that means 70 cents or so doesn't move you
'93 Ruby coupe, 6 sp (both tops)
One measure...reset the average mileage on the
DIC while in traffic and note the numbers
plummet while sitting at a light.
During a March trip I rented a Prius.
Impressive at a light--the only energy goes to
power the stereo and the displays.
It was a cool week so I've no clue as to what
they do with the a/c at a light.
The Prius runs the AC off the battery.
I checked out the Malibu hybrid and noted that the mileage was not good
compared to the Camry - now I know why. The Malibu hybrid has no electrical
component. The fuel shuts off when the car stops and starts the engine when
you press the gas. Hell I can do that manually with my truck. Now I have a
On a 30 mile highway near my home, I indicated 36 MPG at 60 MPH, 6th gear,
with one passenger. At 70 it dropped to 33.
I think GM needs to look at power to weight ratios and gear ratios to get
some economy in the dogs they sell. A high overdrive in a 7-spd automatic
transmission would go a long way to cutting fuel expenses.
While I am on this rant, I drove my 2000 Ford Ranger (V6 Flex Fuel, FWD, 24
MPG highway) to Strasburg, PA for a conference. We have NO Ethanol E-85
stations in Northern Virginia. I found an E-85 station in Strasburg, filled
up on E-85 at $2.50 per gallon and got 23 MPG highway. Something is wrong
with the oil companies in Northern Virginia - wonder if they are keeping the
bio-fuel people out?
That comparison on mileage seems a bit apples &
oranges since the Ford in question is designed
to a 'truck-rated' (semi-commercial) duty cycle
with limited reserve horsepower and the 'vette
is designed for a gigantic reserve horsepower
and non-commercial duty cycle.
I've no clue as to where Corvette engineers
established their, "standard-day, max continuous
sustained r-w horsepower rating." I do know
that they have increased it over the years.
Compared to my C4, the C5 ('02) can sustain
higher speeds across the desert without cooling
issues. Arguably, another apples-and-oranges
comparison since the C4 is auto and my C5 is manual.
The talk about E-85 and Bio fuels is nice but
Bio is very limited in production potential and
availability. That isn't going to change. (I
feel pretty sure that when I croak in 10-15
years, I'll be able to order a chunk of steak
for my final meal.)
"Alternative" fuels are fine for grad-students
or hippies with a modified VW bus going cross-
country. They aren't sufficient in quantity for
any energy company to consider making an
investment to store, distribute and market them.
..... "sorry honorable customer -- no frying
oil until 6 a.m.... after McDonalds changes the
fat in their deep fryers."
The distribution issues in Ethanol preclude it's
use West of the Rockies unless we toss much of
our sugar beet production into the game--that
would raise hell with our farm commodity and
beef cattle production. Flex-fuel or E85 logos
on the vehicles in California are a joke. Ain't
gonna happen here. The long-term, bottomline
economics in these fuels--after give-away
subsidies expire--make them a foolhardy
investment unless something very magic happens
in how they are grown and made.
Unless 90% of us immediately adopt a diet of
twigs and nuts, we are dependent on gasoline and
we've got to learn how to best use it. About
the only way to extract ourselves from this
lockstep is to move power generation to Nuclear
and then power municipal travel with electricity
leaving petrol for long-haul highway and
airplane transport. Meanwhile, it's going to be
a rough several years and we've got to just suck
Alternative--set on our hands, bitch and become
a fourth world country.
We are no longer in control of this. Oil and
gasoline are increasingly traded on foreign
markets. We now make more money exporting
Diesel and other distillates (JP etc.) than by
selling them domestically.
On Fri, 25 Apr 2008 04:43:47 -0500, observer wrote:
It's been part of engineering degrees in UK since the early '80s. My
final year dissertation in '82 was on renewable energy sources.
Trouble is that it's been at a premium cost and very few have been
willing to pay for it. Now energy is expensive it's making sense
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