Did you ever see Fool and Horses and Del Boys and Rodders "friends" that inflated in the back of the Robin Reliant.

 

Originally posted by tjaliwalpa@May 3 2008, 05:47 PM
Lakes,  that's nearly right and good enough for estimates. 

I don't want to split hairs but I am going to (because I have a maths background) and it is Sunday morning and my wife is off with the i30 for the day and I'm lonely.  (I think that is defencible if my wife reads this.)

To be precise, 1 litre = 0.22 gallon or 1 gallon = 4.54 litres. 
That's 2.12 litres in a tank of fuel difference.  Not a great difference, but it is silghtly out.

Similarly, most people use 50 miles = 80 km, but to be precise, its 80.46 km.  That is 1km = 0.6214 mile or 1 mile = 1.609 km.
That difference means 6.3 km out in 700 miles (for Shambles)

There is a good conversion calculator on a UK site at http://www.initium.demon.co.uk/converts/metimp.htm#Liquid

It covers most measurements, including US to metric.

Have a good day guys.  I'm off to golf in the Getz later.  Have fun.

Bob

[snapback]158507[/snapback]​

Hey Bob, no worries m8 just useing the kiss system :thumbsup:

 

Originally posted by eye30@May 4 2008, 11:48 AM
Right!!

Just got back after my 350 round trip I mentioned.

Anyway I'm going to brag now.

350 miles  Used 5.5 gallons of diesel  = 63 5 mile to the gallon.

If anyone can work it out please post l/100k as I'm confused over different ways you can work it depending where in the world you live.

1.6 crdi, 4 adults, full boot cases etc

Can anyone beat this?

Shambles - M53, M56, M62, M1, A1 kept to UK natonal speed limits on all roads!!! As if.

[snapback]158666[/snapback]​

hey eye30 that is close enough to 4.41 L/per 100K mate thats great mate how did you work it out?
i still have dealer fitted fuel so don't know what i'm getting but have traveled close to 400k mostly city but gauge reads around 3/4 full, but i never really trust fuel gauges, i'll wait till the light comes on and go 50 k more then fill up.

Hey Shambles and eye30, are you boys sure you don't use metric measurments? i'm just wondering why you measure you engine size in cc not cubic inch? also as Bob is a mathematician i've always wondered why if we went to metric measurement and everyone knows with metric everything is 10's or 100's why we still have 12 months in our year and why we still have 12 or 24 hour in our clocks? we could change to a ten month year and a 10 hour clock?
Cheers Lakes

 

Originally posted by Lakes@May 4 2008, 08:56 PM
... also as Bob is a mathematician i've always wondered why if we went to metric measurement and everyone knows with metric everything is 10's or 100's why we still have 12 months in our year and why we still have 12 or 24 hour in our clocks? we could change to a ten month year and a 10 hour clock?

[snapback]158702[/snapback]​

It's been done mate..

French Revolutionary Time

 

Managed to get roughly 5.5L/100KM on the weekend driving to Sydney. It was my first full tank of fuel as well The dealer only gave me half a tank.

I was quite surprised as I was going hard on some parts..

Did 570km's and filled up roughly 31 Litres and I reckon I had another close to 400km left in it

 

Ya,

That metric time would have been a good idea. The French should have pushed it a bit more. The metric measurement system started in France. The only real issue with time is the 12 month thing. Got something to do with cycles of the moon.

Anyway, back to the metric to imperial measures and fuel consumption, as I have said before (elsewhere I think), just remember 282.45.

So, to convert the 63.5 mpg, it is 282.45/63.5 = 4.448 l/100k

Then, to convert back, it is 282.45/4.448 = 63.5 mpg

Either way, it works.

Just to clear things up, I am not strictly a mathematicin, I am a teacher with a background in mathematics, science, IT and librarianship. Strange mix, but that is me - strange mix.

Bob

Bob

 

Originally posted by chb@May 4 2008, 10:21 PM
Managed to get roughly 5.5L/100KM on the weekend driving to Sydney. It was my first full tank of fuel as well The dealer only gave me half a tank.

I was quite surprised as I was going hard on some parts..

Did 570km's and filled up roughly 31 Litres and I reckon I had another close to 400km left in it

[snapback]158763[/snapback]​

Thats good going mate, they all seem to go **** for leather between Sydney and Canbera. i would say that hill you come down between picton-winton and cambletown would help, wait till return trip see how it compares.

 

Originally posted by Shambles@May 4 2008, 04:07 PM
It's been done mate..

French Revolutionary Time

[snapback]158712[/snapback]​

Good one Shambles, that would simplify things!

 

Originally posted by tjaliwalpa@May 5 2008, 02:46 AM
Ya,

That metric time would have been a good idea.  The French should have pushed it a bit more.  The metric measurement system started in France.  The only real issue with time is the 12 month thing.  Got something to do with cycles of the moon.

Anyway, back to the metric to imperial measures and fuel consumption, as I have said before (elsewhere I think), just remember 282.45.

So, to convert the 63.5 mpg, it is 282.45/63.5 = 4.448 l/100k

Then, to convert back, it is 282.45/4.448 = 63.5 mpg

Either way, it works.

Just to clear things up, I am not strictly a mathematicin, I am a teacher with a background in mathematics, science, IT and librarianship.  Strange mix, but that is me - strange mix.

Bob

Bob

[snapback]158776[/snapback]​

Hi Bob, were does the 282.45 come from? thanks in advance mate , John

 

John,

On another post I mentioned I had calculated this as the relationship between l/100k and mpg way back when metric measures were introduced into Australia. Everyone was saying, "Ya, but what is that in the real world?" when you mentioned l/100k, so I worked out the ratio and that just happens to be it. I had a Falcon XY back then.

I recently checked the ratio again before posting it on here. No need to concern yourself with how it is worked out. All anyone needs to know is that it works.

Just divide 282.45 by the l/100k and the result is mpg. Works the other way to: divide 282.45 by mp and the result is l/100k.

Simple converter really, especially since most mobile phones have a calculator in them these days.

Bob

 

Thanks lakes for the conversion.

In the UK we buy diesel/unleaded petrol in litres but calculate usage in miles per gallon.

I use 4.546l = 1 imperial gallon. Not USA gallon which is different measurement.

For this trip I filled to the top of the fuel filler. The guage is now above half but not quite half way to 3/4 so estimated used 25 litre, assuming 55 litre tank and the length of the filler hose = 5.5 imperial gallons.

350/5.5 =63.5 mpg

Your way seem the most accurate as it seems to tally with the hyundai UK web site - 4.1l/100k (68.9mpg) for extra urban.

I see chb got 5.5l/100k

Can anyone else beat it?

Why can't we all use the same method bring on the French Revolution!!

 

Originally posted by eye30@May 5 2008, 03:42 PM
...Why can't we all use the same method bring on the French Revolution!!

[snapback]158855[/snapback]​

Qui, I agree!

PS.. what is the French for soixante neuf ?

 

Shambles

Should this be the RED "Devils" revolution!!!!!!!!!!!!

From a true blue.

 

Originally posted by tjaliwalpa@May 5 2008, 06:27 AM
John,

On another post I mentioned I had calculated this as the relationship between l/100k and mpg way back when metric measures were introduced into Australia.  Everyone was saying, "Ya, but what is that in the real world?" when you mentioned l/100k, so I worked out the ratio and that just happens to be it.  I had a Falcon XY back then.

I recently checked the ratio again before posting it on here.  No need to concern yourself with how it is worked out.  All anyone needs to know is that it works.

Just divide 282.45 by the l/100k and the result is mpg.  Works the other way to:  divide 282.45 by mp and the result is l/100k.

Simple converter really, especially since most mobile phones have a calculator in them these days.

Bob

[snapback]158805[/snapback]​

Thanks Bob that is very helpful, my friend works out things like that, he has to work out spring rate of valve springs, he has a valve spring test machine but, worked out a formula to simplify it so he could use a calculator to work out sprng rate all he has to do is measure thickness of spring wire and distance between coils and can work it all out with a calculator. we have double checked it against the teast machine and it works perfect.
i had a XYGT 351, this new ute i have would run rings around it, but they were a great car in there day but thirsty, had a 36 gal fuel tank could go to queensland on one tank but so can my ute on less than half that if i drive carefully
THanks again always good to learn something useful
.

 

Hi Lakes,

Hi30's "282" figure comes from doing the following calculation.

100 x 4.5461 / 1.609344 = 282.48



Briefly this is because:

1 gallon = 4.5461 Litres
1 mile = 1.609344 km
and fuel consumption is based on travelling 100 km

 

Seoul-mate,

Your figure of 282.48 is precisely correct. When I did my calculation, in order to get 282.45, I did some rounding before working out the figure.

Bob

 

Update of MPG.

When I said I had used 25l = 5.5 gallons that was based on my estimate by the fuel gauge.

On way to work filled up to the brim and I only got in 23.01 litres in the tank = 5.07 uk gallons.

Therefore new calculation is 350/5.07 = 69.04 mpg, which if my calculation is correct = 4.09l/100k

Is that right?

Why can't we all use UK imperial measurements it would make life easier???????????

 

I agree, and lets get rid of this dollar thing too.

VOTE FOR THE £

 

FINALLY did my trip to Mackay (800km round trip). she dropped down to a respectable average of 8.3L/100km (this was with A/C on the whole way, plus a stiff SEly on the way down, and some city driving around Mackay). Pretty impressed with that! :beer:

 

At the moment my trip meter is at 610km and the needle is still to the right of 1/4 full