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Formula for working out Liquid volume
cryoman1965 - 25/11/05 at 02:37 PM

Anyone know how to work out the Liquid of a Fuel Tank.

Cheers Nige


David Jenkins - 25/11/05 at 02:40 PM

Length x height x width (measured in cm)

Divide by 1000 to get litres.

Try doing that in inches and gallons!

David

P.S. Divide by 4.546 for UK Gallons

[Edited on 25/11/05 by David Jenkins]


cryoman1965 - 25/11/05 at 02:52 PM

i should have paid attention at skool.
Thanks


DarrenW - 25/11/05 at 03:26 PM

It gets complicated if you have less than simple shape. Depends how exact you want to be i suppose.


Dave J - 25/11/05 at 04:03 PM

Couple of measurement conversion sites you might find useful:

http://convert.french-property.co.uk/index.htm

http://www.onlineconversion.com/volume.htm

Cheers

Dave


Volvorsport - 25/11/05 at 04:18 PM

make it out of carboard boxes , in the shape you want , line with bin liner - fill with measured water .


liam.mccaffrey - 25/11/05 at 05:48 PM

fill the tank with expanding foam then cut the tank open to get your foam tank negative out and then fill a bath with water to the brim and then plunge your foam tank negative into the bath and measure the volume of the water displaced, eureka!

seriously though either fill it with water or fuel if its installed, syphon out the liquid and measure it/weigh it

OR

if its not in the car weigh it, fill it up with fluid and weigh it again. you can work out the volume from the difference in weight

[Edited on 25/11/05 by liam.mccaffrey]


JoelP - 25/11/05 at 06:36 PM

if its not a simple shape, just post dimensions - i love that sort of problem my favourites at gcse were working out the angles of tent posts from obscure areas etc


liam.mccaffrey - 25/11/05 at 07:03 PM

I really enjoy trig and stuff like that


JoelP - 25/11/05 at 07:16 PM

i had to look it up on google when i had to do trig recently! Actually found a small program called machinists calculator that whipped it all up for me!


Mansfield - 25/11/05 at 07:20 PM

Give me dimensions and I will model it in AutoCAD. Give me our address and I will send you AutoCAD and you can model it yourself. Offer open to anyone.

David


steve_gus - 25/11/05 at 08:42 PM

100x100x100mm = 1 litre


If its an oblong or square, just multiply all the sides together and divide by a million - then you get litres.


atb

steve


omega 24 v6 - 25/11/05 at 08:43 PM

If the tanks already made and you need to know the capacity measure the weight of the tank and then fill with water. Then subtract the original weight of the empty tank. 1 litre of water equals 1kg of weight so you can work out the capacity.


David Jenkins - 25/11/05 at 09:32 PM

quote:
Originally posted by steve_gus
100x100x100mm = 1 litre

If its an oblong or square, just multiply all the sides together and divide by a million - then you get litres.



Umm... didn't I say that earlier on?

DJ


ReMan - 25/11/05 at 10:34 PM

quote:
Originally posted by omega 24 v6
If the tanks already made and you need to know the capacity measure the weight of the tank and then fill with water. Then subtract the original weight of the empty tank. 1 litre of water equals 1kg of weight so you can work out the capacity.


Or fill it with milkbottles full of water, if you can find a milkbottle!
Divide the numer of milk bottles by 8 and thgen you've got gallons


steve_gus - 25/11/05 at 11:45 PM

yep, you did, as lxhxw.

I just made it easier to visualise what volume a single cubic litre actually occupied

so there

atb

steve

Ps - Also David, you are being anti american - you didnt give the US gallon fomula - there are certain people that pull you up on these things

so, its

3.7854118 litres per US gallon



quote:
Originally posted by David Jenkins
quote:
Originally posted by steve_gus
100x100x100mm = 1 litre

If its an oblong or square, just multiply all the sides together and divide by a million - then you get litres.



Umm... didn't I say that earlier on?

DJ




[Edited on 25/11/05 by steve_gus]


David Jenkins - 26/11/05 at 07:59 PM

quote:
Originally posted by steve_gus
Ps - Also David, you are being anti american - you didnt give the US gallon fomula - there are certain people that pull you up on these things



COBBLERS!


steve_gus - 26/11/05 at 11:35 PM

yep. I should have perhaps used that answer too

atb

steve


David Jenkins - 27/11/05 at 12:56 PM

That doesn't sound right!

Take an example tank - 10cm x 10cm x 100cm

This is 10000cc, or 10 litres, roughly 2.2 galls.(UK!)

Convert this to imperial - roughly 4" x 4" x 39"

Which is 624 cu in. Multiply this by 6.25 gives 3900 gallons!

The correct mutliplier is 0.0036047, which gives 2.25 UK gallons for the example tank (spot on, allowing for conversion errors)

I'll stick to metric, thank you...

David

[Edited on 27/11/05 by David Jenkins]