2b_pablo
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| posted on 22/2/08 at 12:29 PM |
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locost way to weigh car?
any locost ways to weight my kitcar? in situ in the garage rather than using weighbridges etc.
cheers
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if it aint broke... pull it off and upgrade it!
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02GF74
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| posted on 22/2/08 at 12:31 PM |
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yes, drive into a large bucket of water and collect all the water displaced, pour into smaller containers or a one of known volume since you can
assume that 1 litre = 1 kg and add it all up.
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2b_pablo
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| posted on 22/2/08 at 12:33 PM |
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right, where can I get a 7 sized bucket?
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if it aint broke... pull it off and upgrade it!
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Macbeast
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| posted on 22/2/08 at 12:34 PM |
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Assuming it floats.
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02GF74
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| posted on 22/2/08 at 12:35 PM |
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B&Q in the garden pond department. Water is usually found inside your sink tap.
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Mr Whippy
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| posted on 22/2/08 at 12:37 PM |
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quote:
Originally posted by 02GF74
yes, drive into a large bucket of water and collect all the water displaced, pour into smaller containers or a one of known volume since you can
assume that 1 litre = 1 kg and add it all up.
Your plan is flawed as this would only work for parts that were the same density as water, plus the air in the tires would make it even lighter. Sorry
to be picky 
Fame is when your old car is plastered all over the internet
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RickRick
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| posted on 22/2/08 at 12:38 PM |
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i think so long as it floats then it'll be correct
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Mr Whippy
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| posted on 22/2/08 at 12:47 PM |
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quote:
Originally posted by RickRick
i think so long as it floats then it'll be correct
A floating ship will displace only the water equivalent to its own weight. But a submerged ship will displace the same amount of water whether
it's made of metal or foam. Therefore your right it has to float.
Anyone tried a 7 in the water? I think it should float quite well. I always wanted to get my buggy sealed up to make it amphibious as it's like
a bath with wheels.
[Edited on 22/2/08 by Mr Whippy]
Fame is when your old car is plastered all over the internet
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ditchlewis
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| posted on 22/2/08 at 12:54 PM |
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how about 4 sets of bathroom scales. they read up to say 120kg, so unless you have a porker of a car should work. see if there are any scales in your
local pound shop 
if the scales are to cheap you may still be left guessing what the weight is
ditch
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Dangle_kt
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| posted on 22/2/08 at 12:57 PM |
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what happens if you STACK scales? You could test it by weighing soemthing you know the weight of (you) and calebrate the scales so you know what
equates to what (as long as it doesn't work exponetially or similar...)
Then buy 8 scales (£4 ea in tesco) and try it out.
I only needed four as the rolling chassis was not too heavy.
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RickRick
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| posted on 22/2/08 at 01:08 PM |
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i'm fairly sure if you put one on top of the other, and for isntance put 100kg on it, the top one would read 100kg the second would read 100kg
+ the weight of the scale above
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DaveFJ
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| posted on 22/2/08 at 01:14 PM |
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quote:
Originally posted by RickRick
i think so long as it floats then it'll be correct
If it floats doesn't that mean it weighs the same as a duck? And if that is so doesn't it mean that it must be made of wood? and therefore
it should be burnt......
I'll get my coat
Dave
"In Support of Help the Heroes" - Always
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Richard Quinn
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| posted on 22/2/08 at 01:14 PM |
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quote:
Originally posted by Dangle_kt
STACK scales?
Are they the ones with the max weight tell-tale???
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Richard Quinn
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| posted on 22/2/08 at 01:16 PM |
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quote:
Originally posted by 02GF74
yes, drive into a large bucket of water and collect all the water displaced, pour into smaller containers or a one of known volume since you can
assume that 1 litre = 1 kg and add it all up.
If you want it really accurate, bear in mind that this should be at 4 deg C!!
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2b_pablo
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| posted on 22/2/08 at 01:41 PM |
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PMSL @ some of the responses! Bought a set of £20 scales from B&Q go up to 150kgs so should be ok.
will let you know how it goes 
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if it aint broke... pull it off and upgrade it!
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02GF74
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| posted on 22/2/08 at 01:41 PM |
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I was thinking of using air as another method. For example place a block of wood on two 2 litre Tesco value water bottles filled with air and then
drive car on top.
The bottles should flatten and by measuing this, it should be able to work out the wieght either by calculating or by calibrating.
To stop the car from sinking, put it inside a largre polythene bag.
[Edited on 22/2/08 by 02GF74]
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2b_pablo
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| posted on 22/2/08 at 01:45 PM |
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I could also use Prof Frinks "De-biggifier" and shrink it x100. then pop it onto my wifes cooking scales and "re-biggify" it
once I get my reading.
Multiplying the result by 100 of course
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if it aint broke... pull it off and upgrade it!
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james h
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| posted on 22/2/08 at 01:48 PM |
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quote:
If it floats doesn't that mean it weighs the same as a duck? And if that is so doesn't it mean that it must be made of wood? and therefore
it should be burnt......
I'll get my coat
This should help you work it out!
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DaveFJ
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| posted on 22/2/08 at 01:49 PM |
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One of my colleagues has just suggested stripping the car down to it's littlest components and then standing on a pair of bathroom scales
holding each part and subtracting your weight.. then just add up all the results.....
He got his own coat.....
Dave
"In Support of Help the Heroes" - Always
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Fred W B
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| posted on 22/2/08 at 01:52 PM |
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Secure a plank to a piece of pipe or something as a pivot so that 12” sticks out one side, 48” on the other. Put the 12” side under the front of the
car, put a scale on the end of the 48” side. Push down on the scale with your foot and note the mass just as the car lifts. Times by four to get the
mass at that end. Repeat at other end of the car, add together. Should be good enough for jazz
Cheers
Fred W B.
You can do it quickly. You can do it cheap. You can do it right. – Pick any two.
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02GF74
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| posted on 22/2/08 at 02:13 PM |
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quote:
Originally posted by 2b_pablo
I could also use Prof Frinks "De-biggifier" and shrink it x100. then pop it onto my wifes cooking scales and "re-biggify" it
once I get my reading.
Multiplying the result by 100 of course
that would work but you would need to mltiply by 1,00,000 as object is a solid 3 dimensional.
ofcourse it may be quicker to bigify the scales.
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Phil.J
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| posted on 22/2/08 at 02:40 PM |
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If It's super light I've got an accurate hanging scales I want rid of, weighs up to 600 lb/ 300 Kg. Yours for £40.
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2b_pablo
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| posted on 22/2/08 at 02:42 PM |
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wouldnt have anything to hang from sorry mate.
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if it aint broke... pull it off and upgrade it!
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MikeCapon
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| posted on 22/2/08 at 02:45 PM |
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This is a wonderful forum. You can even tell what day it is. From this thread it's obviously Friday afternoon
www.shock-factory.co.uk
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james h
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| posted on 22/2/08 at 02:47 PM |
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Personally the best way by far is to go to sea level and time the frequency of an oscillating pendulum (with simple harmonic motion).
Repeat with the pendulum next to the car and measure the difference in the time period. With this you can work out the effect of the car's mass
and thus derive its weight.
James
p.s. just don't ask me for help
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