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#1 | ||
its not a!
Join Date: Jan 2005
Location: Rockingham, WA
Posts: 714
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Just heard a corker from one of my little brothers mates, drives an oldish 5.0 statto.
Talking about economy driving he's adamate that the power button gives him heaps better economy...also says he saves heaps of petrol driving fast up to the speed limit so he can put the cruise control on sooner. ![]() This from a kid who argued with my brother that Hitler killed 60million Jews in WW2.
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-93'ED XR8- 5-spd Charcoal Black ohh yeeah
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#2 | ||
The Vengeful One
![]() Join Date: Apr 2006
Location: Tazzy
Posts: 12,762
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Oh dear!!!
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#3 | ||
White Car Driver
Join Date: Sep 2006
Location: Melbourne
Posts: 1,174
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Hrm, I noted slightly better economy in Power when navigating the hills in the Northern Beaches area of Skidney than in Economy, as the engine labours more at lower RPM in Economy than in Power, and it uses more fuel than if it just spins a bit faster labouring less. If that makes sense. As for racing up to speed and then putting cruise on, I highly doubt that would save fuel. :P
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#4 | ||
FG XR6 Ute & Sedan
![]() Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 23,039
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There is a lot of research including some done by Mercedes Benz published in Road and Track some years ago that shows on a trip brisk acceleration to the desired cruising speed, while giving a momentary heavy fuel consumption, will give a better overall trip economy i.e. using more fuel for a shorter period can be more fuel efficient than accelerating slowly and having less than optimal fuel consumption for a longer period.
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#5 | |||
Regular Member
Join Date: Mar 2005
Posts: 216
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Quote:
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#6 | ||||
FF.Com.Au Hardcore
Join Date: Dec 2004
Location: Melbourne, Australia
Posts: 2,602
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Quote:
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#7 | |||
FG XR6 Ute & Sedan
![]() Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 23,039
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Some more recent similar research(albeit with diesel trucks) that was based on MB earlier car research. I am still seeing if I can find that earlier MB paper.
http://inderscience.metapress.com/me...q8lvj9gxkl.pdf Quote:
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#8 | ||
FF.Com.Au Hardcore
Join Date: May 2006
Location: Perth, South
Posts: 3,064
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yeah, well it's all very well getting there quickly, but the amount of people that can't stay there and keep speeding up and slowing down doesn't help fuel consumption
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#9 | ||
FG XR6 Ute & Sedan
![]() Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 23,039
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I guess the real point is that the often cited claim that you get the best fuel economy by driving like there is an egg under the accelerator peddle has been proven wrong numerous times (as well as such diving habits being perhaps dangerous in terms of frustrating other road users). "Brisk" rather than flat out acceleration giving early gear upshifts is the go.
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#10 | ||
White Car Driver
Join Date: Sep 2006
Location: Melbourne
Posts: 1,174
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I know I'm keeping on about the Power/Economy thing, but when combine with brisker acceleration, which would be better?
I can't help but think that in the city there is no point in gunning it either. |
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#11 | ||
FG XR6 Ute & Sedan
![]() Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 23,039
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Economy gives earlier shifts so is more economical. The power switch is all about later shifts and therefore usually poorer economy (except when towing or climbing mountains). So it will depend on your terrain and what you are pulling or carrying. Of course if you are racing for pink slips economy will cost.
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#12 | ||
White Car Driver
Join Date: Sep 2006
Location: Melbourne
Posts: 1,174
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OK then, so I'll get into it a bit more on the next tank and see how we go. Currently sitting on about 420Km, with the guage just below half (I love fuel guages and the false hope they provide haha.)
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#13 | |||
FF.Com.Au Hardcore
Join Date: Mar 2005
Posts: 7,700
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Quote:
And I fail how all this relates to WWII, but I guess I must be missing something, unless the early Volkswagens did it too - ![]()
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I reserve the right to arm bears
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#14 | ||
FG XR6 Ute & Sedan
![]() Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 23,039
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6 million is sort of close to 60 million.
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#15 | ||
Regular Schmuck
Join Date: Dec 2004
Posts: 5,640
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I know my EF had better economy in power in heavy traffic as it didn't want to change up a gear in stop start traffic. I believe this was also recommended by Ford at the time.
I'd also heard about studies in accelerating briskly to the speed limit and then hitting cruise to be more economical. Ok, his numbers are a little off with regards to the Jews but you can't always be right... |
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#16 | ||
Regular Member
Join Date: Dec 2007
Location: Melbourne
Posts: 93
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ok.... dumb question, my VX had a power button.... i had no idea what it was for, and never used it.....what they hell do they do....
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First car: 1999 MR Mitsibishi Lancer Coupe- Sold Second car: 2002 VX Berlina- Sadly ridden off Now: 2007 Ford Fiesta Zetec The missus 2003 Rav4 4 door Cruiser |
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#17 | ||
FF.Com.Au Hardcore
Join Date: Mar 2005
Posts: 7,700
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The power button ii the Falcons is fantastic when towing or driving in hills.
It holds the gear longer before changing up or down. In power, when towing or in hills the engine will only drop a few revs before the transmission changes down, whereas in normal, the revs will drop a fair bit before changing down. It enables the car to maintain better speed. You wouldn't notice much difference when driving around on flatish ground.
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I reserve the right to arm bears
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