So what happened

[ollie989898]

Update on the big one from last night, I fudged up the volume of fuel consumed which is going to bump my miles per gallon a lot.

Tractor used 88.977 kg of fuel and drove 90 miles.

88.977kg divided by the density of red diesel (0.845kg/L) gives a total fuel volume consumed of 105.2982249 litres.

Divided by (UK) gallons gives 105.2982249/ 4.54609 = 23.16237137 gallons.

90 miles divided by 23.16237137 is a far less impressive 3.885612512 miles per gallon.

 

[Agriimark]

And to think all this started from a picture of an overturned tractor and trailer [emoji57]

 

[Frankzy]

what the hell are you lot going on about this is a pointless thread some drivers can get better fuel consumption than others because they are constant they dont change gear all the time and rev the bol--cks of the machine they just keep grinding on if one machine is more fuel efficient than another depends on weight and different transmissions tyre pressure as long as you have a clean burn there isnt a lot you can do,i knew a chap who could use more fuel per hour than any one else when he left the yard it was as if he was in a drag race he would have changed

So different driving techniques can mean the difference between 4-5 mpg and 29?

 

[Mouser]

Update on the big one from last night, I fudged up the volume of fuel consumed which is going to bump my miles per gallon a lot.

Tractor used 88.977 kg of fuel and drove 90 miles.

88.977kg divided by the density of red diesel (0.845kg/L) gives a total fuel volume consumed of 105.2982249 litres.

Divided by (UK) gallons gives 105.2982249/ 4.54609 = 23.16237137 gallons.

90 miles divided by 23.16237137 is a far less impressive 3.885612512 miles per gallon.

Like I said, your maths may well be correct but the numbers make no sense for this argument. A 939 will not be burning 40kg/hr average on a 90 mile road trip unless its got a 6m powerharrow buried into the tarmac as it goes!

 

[dowcow]

So different driving techniques can mean the difference between 4-5 mpg and 29?

Nah... but it could make a difference of 20% or so easily if one guy is heavy on the brakes all the time and another allows his tractor to coast, if one has unnecessary ballast, and hasn't adjusted his tyre pressures for the particular job. Just running across the wrong part of the field can see the fuel consumption shoot up if you go through a sticky patch. You might not be making ruts or losing traction, but it is needing more grunt. Fascinating watching the fuel usage / hour bobbling around when hauling trailers, and you can definitely drive in a manner to keep it lower.

I'm sure the reason there seems to be so many doddering cars going at 40mph on decent country roads these days is because they've all got current mpg on the dashboard and they desperately try to keep it as high as possible.

 

[holywell farmer]

blimey some off the details you lot are typing, litres used torque does average farmer contractor really care that much ?

 

[Lofty1984]

blimey some off the details you lot are typing, litres used torque does average farmer contractor really care that much ?

If your paying for it yes

 

[ollie989898]

Someone who subscribes to profi will be able to go online and find a test of a Fendt where they have measured specific fuel consumption doing a haulage job. I would have better figures to work from then. Might even hit 29mpg.

 

[Drillman]

Someone who subscribes to profi will be able to go online and find a test of a Fendt where they have measured specific fuel consumption doing a haulage job. I would have better figures to work from then. Might even hit 2.9mpg.

Fixed your post for you

 

[ollie989898]

Fixed your post for you

If my calculator is that broken I might get into agricultural contracting myself.

 

[holywell farmer]

If your paying for it yes

Some of the details about these engines confuse me !

 

[njneer]

Swivel hitches have the advantage of hopefully not twisting the tractor hitch in an overturn but you still face the threat of it having the tractor over too if you consider the drawbar on a trailer is two feet off the ground normally. Then consider a trailer on its side the drawbar is now some 6 feet off the ground which then lifts the rear of the tractor off the ground in most cases ,if the hitch holds, which depending on the circumstances could have the tractor over as well.
Part and parcel of running ever more high sided trailers at weight with high centres of gravity coupled with today’s increased speeds ( yes I know speed was not a factor in the original
Post) just a passing comment on the “ progress” of ever bigger trailers.

 

[Agriimark]

blimey some off the details you lot are typing, litres used torque does average farmer contractor really care that much ?

Any normal person should care. Regardless whether they are a contractor, big arable outfit down to a farm running only a couple of tractors. If measures can be taken to reduce fuel consumption across a week, month, year then it would be a no brainer. Could make a difference between saving money or going down sh!t creek without a paddle

 

[Frankzy]

Swivel hitches have the advantage of hopefully not twisting the tractor hitch in an overturn but you still face the threat of it having the tractor over too if you consider the drawbar on a trailer is two feet off the ground normally. Then consider a trailer on its side the drawbar is now some 6 feet off the ground which then lifts the rear of the tractor off the ground in most cases ,if the hitch holds, which depending on the circumstances could have the tractor over as well.
Part and parcel of running ever more high sided trailers at weight with high centres of gravity coupled with today’s increased speeds ( yes I know speed was not a factor in the original
Post) just a passing comment on the “ progress” of ever bigger trailers.

That's true... One more argument for why ball and spoon is safer since those will just pop out once it reaches around 80 degrees

blimey some off the details you lot are typing, litres used torque does average farmer contractor really care that much ?

Up here they do at least... Anyone who works at a contractor and doesn't know fairly intimately how an engine operates is gonna be rather rare.

 

[Wellytrack]

Some of the details about these engines confuse me !

Don’t worry, some of the claims about these engines confuse me too...

 

[Kiwi Pete]

Some of the details about these engines confuse me !

And me, it's reasonably simple physics that dictate the efficiency of a diesel engine overall, but Ollie has a pretty sharp mind so it was interesting to see how he worked that out.

Also interesting to compare tractor haulage to truck haulage - now he's amended his calculation it shows me:
Tractor + trailer, 24 tonne GLW, about 4mpg
Truck + trailer, 48 tonne GLW, about 5.5mpg (in our fleet)

It'd be a lot closer on your roads, I suspect, our roads are rough but wider and a lot emptier than yours.

Be interested to know if Roscoe has any data on fuel consumption, out of interest?

It makes a huge difference to driving style, when you have to pay for all your fuel, I seldom have my tractor over 1300rpm unless I have to.
It's an old tub, but even with all-cold-starting for feeding silage I keep it under 4 litres an hour, it makes the difference between 4 fills a winter and 5 fills if I was "giving it the jandal" just to hear the turbo.

 

[holywell farmer]

And me, it's reasonably simple physics that dictate the efficiency of a diesel engine overall, but Ollie has a pretty sharp mind so it was interesting to see how he worked that out.

Also interesting to compare tractor haulage to truck haulage - now he's amended his calculation it shows me:
Tractor + trailer, 24 tonne GLW, about 4mpg
Truck + trailer, 48 tonne GLW, about 5.5mpg (in our fleet)

It'd be a lot closer on your roads, I suspect, our roads are rough but wider and a lot emptier than yours.

Be interested to know if Roscoe has any data on fuel consumption, out of interest?

It makes a huge difference to driving style, when you have to pay for all your fuel, I seldom have my tractor over 1300rpm unless I have to.
It's an old tub, but even with all-cold-starting for feeding silage I keep it under 4 litres an hour, it makes the difference between 4 fills a winter and 5 fills if I was "giving it the jandal" just to hear the turbo.

It's good to know I'm not alone

 

[holywell farmer]

Any normal person should care. Regardless whether they are a contractor, big arable outfit down to a farm running only a couple of tractors. If measures can be taken to reduce fuel consumption across a week, month, year then it would be a no brainer. Could make a difference between saving money or going down sh!t creek without a paddle

I will admit I do try study the figures from profi when do tractor comparison test,

 

[Superted820]

I'm sticking my neck out here, I know, but I think some of you need to lay off on speedstar
We visited in person once and we discussed the matter at hand. All I will say is he is doing a great job of taking flak.

Agreed. There’s a lot of keyboard warriors getting on here now. The fendt and it’s fuel. This thread. Likely if they met Paul face to face you wouldn’t get a peep out of them. I’ve dealt with him once and found him straight and good to deal with. Comments like many on this thread are what put people off forums like this.

 

[Frankzy]

Also interesting to compare tractor haulage to truck haulage - now he's amended his calculation it shows me:
Tractor + trailer, 24 tonne GLW, about 4mpg
Truck + trailer, 48 tonne GLW, about 5.5mpg (in our fleet)

It'd be a lot closer on your roads, I suspect, our roads are rough but wider and a lot emptier than yours.

Be interested to know if Roscoe has any data on fuel consumption, out of interest?

A study done in Sweden came to these figures.

Rigid truck + trailer 60 tonne GLW 50l/100km (4.7 mpg)
Rigid truck + trailer 74 tonne GLW 55l/100km (4.27 mpg)
Rigid truck + 2 trailers 90 tonne GLW 57l/100km (4.12 mpg)

This was tested during the summer with a bit of city driving as evident by the average speed hovering around the 65km/h mark.
Very interesting however is how small of a difference there is between 60, 74 and 90 tonnes, especially noteworthy is the miniscule increase from 74 to 90..