Things you always wanted to know the answer to [Vol. 2]
Discussion
The Don of Croy said:
Back on topic - why are so many modern cars getting so ugly? BMW's (esp the X series), Audi, Mercs (too much Transformers influence) and all manner of eastern produce...is it to appeal to a new market?
I disagree.Yes, there are some ugly cars, but that has always been so.
Crusoe said:
Eccept the pipe is usually 15 feet and 3/4 of an inch wide which gives a total capacity of around 7.5 lrs if you could actually get the whole lot out
An inch is c.2.5cm.So a pipe 3/4 of an inch wide has a radius of 0.9 cm or thereabouts (=2.5*0.75*0.5).
(Note radius not diameter.)
So your answer should be c.3x mine not 15x.
walm said:
GTIR said:
I'm at an Esso and just seen a guy lift the fuel pipe up to get that extra fuel out. 
Firstly how much fuel has he "gained"?
The pipe loop (where the fuel is trapped) is about five foot long but I don't know how big the internal diameter is. So...
Secondly. Will the next person to fill up get less because that gap created will get filled up whereas before it'd be full?
Thirdly. If he's filled it up and will pay for a certain amount where is the fuel registered at, the filler ir the pump?
I am sure the pump won't allow him to half-inch all the fuel in the pipe.Firstly how much fuel has he "gained"?
The pipe loop (where the fuel is trapped) is about five foot long but I don't know how big the internal diameter is. So...
Secondly. Will the next person to fill up get less because that gap created will get filled up whereas before it'd be full?
Thirdly. If he's filled it up and will pay for a certain amount where is the fuel registered at, the filler ir the pump?
If it did, I guess the next customer would be paying for it (unless they did the same... a sort of pay it backwards...!).
How much...?
V= pi x r^2 x pipe length.
Call it 150cm long and 1cm radius to keep the maths simple = nearly half a litre so 60-70p.
I thought it was incredibly tight of him to do it.
He's better off driving more efficiently, not tailgating, reading the road ahead etc. but that's asking too much of any taxi driver.
walm said:
An inch is c.2.5cm.
So a pipe 3/4 of an inch wide has a radius of 0.9 cm or thereabouts (=2.5*0.75*0.5).
(Note radius not diameter.)
So your answer should be c.3x mine not 15x.
Sorry doing it in my head and got the number of cm in a foot wrong doh.So a pipe 3/4 of an inch wide has a radius of 0.9 cm or thereabouts (=2.5*0.75*0.5).
(Note radius not diameter.)
So your answer should be c.3x mine not 15x.
3/4inch pipe, area would be = ƒÎ ~ r^2
ƒÎ (3.14) ~ r^2 ((3/4*2.5)/2)^2 = 2.76 square centimeters
For 15 feet of pipe to find the volume you multiply the area (2.76 cm2) by the length in cm (15*12*2.5) 450cm long.
Volume is therefore 2.76*450 = 1242cm cubed or just over a liter.
Question - why hasn't the globe gone all metric units yet?
Hugo a Gogo said:
mostly they have
I certainly wasn't taught feet and inches at school, and that was from 1976 onwards
hose and pipe measurements are often weird anyway, 1" doesn't always mean 25.4mm
Indeed. As an engineer I can tell you that 1" tube/pipe can mean either:I certainly wasn't taught feet and inches at school, and that was from 1976 onwards
hose and pipe measurements are often weird anyway, 1" doesn't always mean 25.4mm
25mm (DN), 33.7mm (OD - varies on wall thickness) or 27.2mm (ID). It really depends on the material and application. Domestic water services are measured in ID, whereas LTHW/CHW services tend to be measured in OD. This is due to the pipe sizing being based on different materials.
Copper is measured ID, Steel/Carbon is measured OD.
sleep envy said:
walm said:
sleep envy said:
Hooli said:
I use Imperial because it's English and I'm English living in England. b
ks to that french ste.
What size tyres do you buy?ks to that french ste.
I know what you're getting at, but by preference I refer to everything I can by real measurements. For example the stable door I made for our kitchen last week is 69x30.5".
monthefish said:
The Don of Croy said:
Back on topic - why are so many modern cars getting so ugly? BMW's (esp the X series), Audi, Mercs (too much Transformers influence) and all manner of eastern produce...is it to appeal to a new market?
I disagree.Yes, there are some ugly cars, but that has always been so.
LordGrover said:
monthefish said:
The Don of Croy said:
Back on topic - why are so many modern cars getting so ugly? BMW's (esp the X series), Audi, Mercs (too much Transformers influence) and all manner of eastern produce...is it to appeal to a new market?
I disagree.Yes, there are some ugly cars, but that has always been so.
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