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It was my wife's birthday recently and I suggested we go for a meal.
She said she wanted to go somewhere really expensive so I took her for a pie at the local filling station.
Pete
Sticker that was seen in the 1980's
The Cars Paid For, the Petrol is on Credit!
Yesterday I finally removed the 4 old school roof racks from my Hiace van which I've had on there since I got the vehicle in 2010.
At most I have used these racks about 3-4 times a year. They are not difficult to remove/replace so they can sit inside the van so I can get at them quickly when I need to.
Estimates of what this does to fuel consumption are interesting and depends on a bunch of factors like rack design and vehicle speed. Most of kms I do in this vehicle are going up and down the freeway outside of high traffic times so higher speeds for which additional consumptions of 10 -12% have been measured. I will be keeping an eye on this to see what happens.
The other way to save a bit on fuel are
- make sure your tyre pressures are correct or even a touch over.
- remove heavy crap from you boot to reduce vehicle weight
That is how I got this black eye.Quote:
Originally Posted by woodhutt
Rules of thumb on fuel consumption:
In town, mostly below 80kmh/50mph
Rapid acceleration and hard braking, Heavy vehicle increase fuel consumption.
Highway driving, over 80/50
Aerodynamics is the killer. Vehicle shape and appendages like roof racks etc. The exponential increase in drag is one of the biggest reasons fuel consumption goes up so much at say 110 compared to 100 compared to 90.
The roof racks are quite disruptive of airflow but something people don't seem to realise is managing the airflow at the rear of the vehicle is more important than the front. A flat back is literally like towing a parachute. Caravan manufacturers seriously don't understand this, or maybe they don't care. In extreme cases it can destableise the whole rig.
2c
My ancient HSV (2001 VX) has a monster donk.
It barely turns over, even at 110 its only 1800rpm.
Fuel consumption drops off a cliff at 106, which is interesting. It goes from 8.0 to 6.1L/100km.
Driving to/from Sydney from Canberra is a good measure as its mostly good flat highway (except for the few "fun bits" that are left).
Putting the cruise control at 106km/h does nothing to trip time but saves a fortune.
I'm a bit lucky as the old beast has a you-beaut computer that gives me real time feedback and dynamically tunes itself. One can select several modes for the engine... sedate to enthusiast. The engine is feral at the last setting...
Its interesting that there isn't an active community of re-tuning companies for ordinary engines that will put a dash mounted fuel monitoring system in as part of a widely-installed upgrade. Its not hard and a good rechip/tune/remap on any engine can save a FORTUNE.
Petrol was $2.55 the other day in North Sydney. Yikes.
There's probably not much that is flatter than the back(and front) of a Hiace van.Quote:
Originally Posted by damian
The manufacturers fuel consumption for that model vehicle (2008 3L diesel) is 8.6 L/100km.
Our Isuzu DMax 3L diesel supposedly gets 7.9 L/100 km - OK its not what you would call aerodynamic but its got to be better than than Van.
In practice the best we get with the Max around town is about 9.2 which was about the same as the van around town before I put the roof racks on.
However the DMax does do more short trips than the van.
When you get to analysing specific vehicles the driving factors also become specific.
If you holden has aerodynamic foils they may be designed for looks and be an aerodynamic disaster, or they may be optimised for rasing speeds and drag terrible at legal speeds. Your experience suggests to me you have an aerodynamic hump at 107 where signifigant airflow detachment is occurring.
Around town aerodynamics should not be significant. Accelerating mass is the killer, but engine efficiency can trump it in extreme circumstances. Car companies can make dreadful mistakes in the design process as it is committee managed now and good engineering can be discarded for marketing or manufacturing expedience. You can't appreciate how chaotic and random the process is until you for for a manufacturing concern.
CuriousQuote:
Originally Posted by woodPixel
where are the "fun bits" ?
I though the last "fun bit" was removed when the highway [north bound] was realigned past Tiyces Lane about 15 years ago.
No doubt prices are high, but I have seen and paid a lot more than current prices on our travels around Oz.
2008, Rabbit Flat Roadhouse, Tanami Desert.
Attachment 509312
2016, Ilkurlka Roadhouse, Anne Beadell Highway.
Attachment 509313
2018, Punmu, Telfer Mine Road, NW WA. We actually bypassed fuel at Kunawarritja that was $3.40 as we had to make a 600km detour because of 5kms of flooded and impassible track on the Canning Stock Route.
Attachment 509314
Cheers Andrew
OK, Mates
You can save more fuel with common sense than almost anything else.
You are driving in the city at about 65. As you pass through an intersection you see the traffic light about a km away change to red. You have two options. Rush to the red light so that you can go when it changes to green. OR. Relax and coast up to the traffic light.
With the latter option you have to wait about 15 or 20 seconds before the light turns green. But all the fuel you saved is immeasurable. And as a bonus, the distance between brake pad exchanges is significant.
SWMBO has the lightest feet I know.Quote:
Originally Posted by rrich
When she used to drive a leased Subaru Forester, the lease included a $2500 pa fuel allowance but she rarely exceeded $2000 of fuel PA even though she met the lease milage. The first Forester was a 2 year lease (25k km pa) and the mechanic said the brake pads look like they'd done <20k km. The second Forester was a 2yr/30k km pa lease and it was in such good nick at the end of the lease we ended up buying it out.
My driving annoys the boss and was a constant source of amusement.
She is a brilliant driver. So fast and SO smooth. It is a joy to ride in the passenger seat.
I can be fast if I want to but was beaten into submission by endless tickets, several issued despite me being well under the limit.
The funny thing though was whenever we were driving 2 cars to the same destination I'd arrive either at the same time or BEFORE her. She would get every red light, while I would get mostly greens.
My fuel consumption in the same car was always about 10-20% better.
But she was having more fun.
About thirty or so years ago when the fuel prices went up through the roof, one of the big nationwide transport companies lowered the speed of their fleet from 100kmh to 90kmh, thereby saving hundreds of thousands of dollars in fuel costs. Anecdotally they put signs on the back of their trailers saying, "If you see this vehicle exceeding 90 kmh please ring this phone No 04.......34"
We may be able to get this thread back on track as a joke.
Bill was following a roadtrain down the highway at just under 100kmh when he noticed the abovementioned sign on the back of the trailer. "By cripes I'll ring the number and dob this speeding mongrel in" thinks Bill and proceeded to dial the number on the sign. Unbeknownst to Bill the truckie had substituted his own mobile number for that of head office, so when his phone rings he answered it. T, "Hello, Interstate transport co, Gordon speaking, how may I help you?"
B. " Hello Gordon it's Bill here, I'm following one of your roadtrains heading for Perth and he's exceeding 90kmh, he's nearly doing a hundred!".
T. "Ok thanks Bill, now to identify which prime mover is actually towing the trailers there's a small three digit number below the phone number, we're sorry, it is quite small and you'll have to get pretty close to read it but we do need that number to go forward with this report".
Bill moves up on the truck, gets very close but can't see any number.
B. "Hey Gordon, I'm right on his tail but I'm blowed if I can see any three digit number."
The truckie stands on the anchors and says" how fast's he going now c.....andidate?"
Cheers,
Geoff.
I have been caught behind people who do exactly that and it is a big inconvenience to many others on the road. For example just the other day I was behind someone who drove the last 200 metres up to the red light at about 10 km/hr and getting slower the closer they got, hoping it would go green before they got there. Unfortunately for them - and everyone else caught behind them the lights are sensor activated. They were not going to change no matter how long he took to get there. The time for them to change did not start until he got right up to the line and triggered the sensor.Quote:
Originally Posted by rrich
I wasn't even going through the lights but I had to wait behind this idiot until I could go into the "turn left anytime with care" lane and then go around the corner.
When driving trucks I always tried to time the light change to avoid stopping and it is something I still do in a car as well. In traffic jams I set the manual throttle to a slow speed and very rarely had to stop just letting the gap open and close due to the traffic in front stopping and starting. My car I drive now steers and stop/starts automatically so traffic jams have become a non event apart from the inconvenience of course.Quote:
Originally Posted by doug3030
I have a HR license and used to drive trucks too. There's a big difference in trying to play the lights so you don't have to stop, which I did at appropriate times, and driving up to a sensor activated light at a ridiculously slow speed expecting the light to somehow change before the sensor is activated.Quote:
Originally Posted by Chris Parks
Given that movement/IR sensors, cameras, 5g and other smarts are so cheap, its amazing that the busier bits of town are not run by an AI.
imagine having an active real-time traffic management system that "sees" vehicles and manages the fluid movement of all in an optimised manner.
Nothing irritates me more than the stupidity of the traffic system. Its stone aged.
You may find this interesting as to the level of complexity that can be achieved to keep traffic flowing.Quote:
Originally Posted by woodPixel
https://www.youtube.com/watch?v=knbVWXzL4-4
Hardly stone aged WP.Quote:
Originally Posted by woodPixel
Have a look at these two sites. AI has been there controlling traffic signals since at least the early 1980s. The "problem" is that the signals are not just on the route you alone drive but represent a coordinated network and the AI tries to optimise the performance of the entire network.
ERROR: The request could not be satisfied
Sydney Coordinated Adaptive Traffic System - Wikipedia
.
.
Edit, the first link may display as ERROR, but, at least on my PC, the link does work
As this is in the jokes thread I have to say that I think it’s adorable that you think you have driven trucks with a HR license :DQuote:
Originally Posted by doug3030
Cheers Andrew
It was enough license for the trucks I was driving. That's all that mattered. Why be a dick about it?Quote:
Originally Posted by AJ.
because it’s a joke thread, which I pointed out to make it as obvious as possible that it was a joke, I even added a big green smiley face to emphasise that I was joking, but obviously some people have no sense of humour.Quote:
Originally Posted by doug3030
Cars are now talking to traffic lights in Europe and have been for come years cars talking to trafic lights - Google SearchQuote:
Originally Posted by woodPixel
. .Quote:
Originally Posted by AJ.
Attachment 509601
Well me hardies,
Don't go off the rails - we all soon get $250 extra in the xmas sock this year!
I'm going to buy half a a tank of U98, a few $9.90 cauliflowers, some of those bargain $5.50 lettuce and with any spare change go and buy a house instead of renting.
$2.40 petrol will be the LEAST of our problems this year.
Sigh.....
Attachment 509602 Attachment 509603
so is $250 enough of a bribe to get you to change who you will support in the May election ??Quote:
Originally Posted by woodPixel
ianQuote:
Originally Posted by ian
This jokes section is the perfect place to discuss that bribe as a paltry $250 is exactly what it is: A joke and to my mind an insult to boot as it is not even a halfway respectable bribe. It reminds me of my favourite story.
A man and woman meet in a bar and start chatting together and are getting on rather well. At some point in their conversation the man says,
"May I ask you a question?"
The woman replies "Okay."
"Would you sleep with me if I offered you a million bucks?"
She looks him up and down with an appraising eye and thinks to herself that he is quite good looking and if the truth was known she had been considering the prospect anyway and says "Yes. I would."
So he ponders a moment and then says "I'm a little strapped for cash at the moment. Would you sleep with me for a hundred bucks?"
She is instantly outraged, slams her hand down on the bar and says "What do you think I am?"
He replies with a grin, "We've already established that. We are just haggling over the price now."
A bribe is a bribe is a bribe...........
Regards
Paul
Apparently not always in the minds of pollies!Quote:
Originally Posted by Bushmiller