The WHOLE idea of gears is to negate the need to go "full throttle" to
ascend a hill......
You are putting excessive strain on your engine, gearbox, differentials
and CV joints by putting that much load due to not using the CORRECT
gear for the job... that of climbing a hill
Please explain to me how using full throttle in fifth gear at a normal
cruising RPM is hard on my engine, gearbox, or differentials?
Telling me that I am putting excessive strain on my components is not
good enough. Every car I have owned has rusted out before either the
engine, transmission, or differentials shucked.
How hard is it to drop it back a gear, or two if necessary...... the
auto is doing exactly what it is supposed to....
despite the fact that people dont like them because they dont foresee
the correct gear, as we do..... the fact is, the auto chooses the
correct gear according to it's programming. Auto companies spend
MILLIONS of dollars on testing and development, choosing the correct
programming for gear changes, etc... and you complain when your auto
selects a gear to climb a hill
sorry mate, but youre a wanker.... if you don't like autos, dont buy them
I've never owned an auto, prefer manual, so that is in fact what I
buy. Autos have there place in the world. This is a discussion about
the advantages and disadvantages of each setup.
I tried to correct your toppost here. It made your reply a little
confusing.
#1 what is a wanker? I assume that you are complimenting my wisdom if
you were replying to my post, which I am not sure of because of your
top post. If you were indeed calling me a wanker thank you very
much, I guess. We don't use that term much here in the good ole US of
A.
We are having a discussion about sticks and fuel economy and autos and
fuel economy. Going up a hill full throttle with a manual
transmission in the tallest gear that is capable of pulling the hill
is the most fuel efficient way to go up the hill. Gasoline engines
run must efficiently at full throttle and low rpm. They run least
efficiently at part throttle and high rpm.
Note: I am not talking about letting the RPM's drop to the point that
the motor is shaking and vibrating - lugging. I am not advocating
lugging.
Which brings up an interesting point. Would I go down the highway
most efficiently in a car with a tiny motor that required full
throttle to cruise at 80 mph at cruising rpm (low)? Yes! That is why
gas-electric cars use tiny motors, with electric backup to kick in
when they go up hills.
There is a reason for this of course. When you open the throttle you
lower the pressure drop across the intake manifold. With the throttle
partially open, the engine has to do extra work to pull in the air
against the pressure (pumping loss). A deisel engine always works
like this. With a diesel the throttle controls the fuel, not the air.
It is one of a couple of reasons why diesels run so efficiently.
So going up a hill in a tall gear (highest possible gear) reduces
pumping loss.
http://www.insightcentral.net/KB/faq-quicktips.html
An automatic transmission has no way of looking forward and deciding
if it is capable of pulling a hill in said tall gear, so it takes its
best guess, dropping a gear, often before its time, or hunting and
pecking. All of this wastes fuel. A driver with a manual can stay in
top gear until a shift becomes neccessary due to RPM drop.
This is one of the reasons why I contend that in the real world, a
manual driven correctly will generally outperform an auto, all other
things being equal. Weight and hp loss through transmission (when not
locked up) being the others.
Anyway thanks for the reply. Happy wanking to you as well!
nate
02 OBW MT5
