novacaine
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| posted on 22/2/08 at 03:37 PM |
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if you have a barometer my method might just work.....
ok, so have a sealed room of a known volume,
Measure the pressure in the room when it is empty then you can introduce your car into said room through an airlock then measure the change in
pressure
(make sure temerature stays the same
do a bit of maths and you will then be no where nearer your goal as you just slap your head in an exclamation of stupidity as you realise that the
rather time consuming method you have just used in fact finds the volume of the car, not the weight, you then return to the computer to tell us all
about it on this forum.....
you then decide to put said barometer inside a rather large sealed plastic bag of a known volume (large) you then place your car on top of this bag
and measure the change in pressure, a bit more maths then you know how much your car weighs
And you run and you run to catch up with the sun but its sinking, Racing around to come up behind you again, the sun is the same in a relative way but
your older, shorter of breath and one day closer to death
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NS Dev
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| posted on 22/2/08 at 03:42 PM |
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I think its all psychological!!
if you are worried about how much it weighs, its probably too heavy. lose a few bits and bobs that you don't need then see if you are happy with
it.
repeat until happy. if car no longer works you've gone too far.
if it does, bingo, light car
How light?
Who knows, but, as I always point out to people handing me their problems at work, "only ask the question if you can do something to change the
answer"
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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2b_pablo
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| posted on 22/2/08 at 03:44 PM |
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I think you get one of these:
 
gyrate
then get 5 of her pals
gyrate
gyrate
gyrate
gyrate
gyrate
then keep adding them to a big bar on the far side of the car until they balance the car.
Then jump on top of one and try to gauge her weight and multiply by the number required to balance the car.
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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 04:05 PM |
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Sorry but you are missing the point now - the original question was asking for a locsot method, I'll bet she and her identical friends are
gonna be pretty high maintenance. 
quote:
Originally posted by 2b_pablo
I think you get one of these:
gyrate
then get 5 of her pals
gyrate
gyrate
gyrate
gyrate
gyrate
then keep adding them to a big bar on the far side of the car until they balance the car.
Then jump on top of one and try to gauge her weight and multiply by the number required to balance the car.
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2b_pablo
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| posted on 22/2/08 at 04:08 PM |
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lol you only replied so you could quote and get 5 more 
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if it aint broke... pull it off and upgrade it!
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blueshift
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| posted on 22/2/08 at 06:34 PM |
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back to slightly more serious: stacking the scales vertically (in series) would not help, as someone said they'd read the same + weight of
scales on top of them.
however if you exceed the range of one scale you could put two side by side, something appropriate to spread the load (bits of wood etc), zero the
scales with the load spreader on, put the car wheel down in the middle and add the weights on both scales to get the corner weight.
Note you have to make sure the suspension is loaded up evenly, if you raise one wheel at a time and leave the others dangling you'll overread
the weights.. 4 scales and do both back wheels at the same time then both fronts will be pretty accurate.
[Edited on 22/2/08 by blueshift]
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carpmart
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| posted on 22/2/08 at 07:00 PM |
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where does one purchase the scales at a good price but accurate enough to be worth the effort?
You only live once - make the most of it!
Radical Clubsport, Kwaker motor
'94 MX5 MK1, 1.8
F10 M5 - 600bhp Daily Hack
Range Rover Sport - Wife's Car
Mercedes A class - Son's Car
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2b_pablo
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| posted on 22/2/08 at 10:05 PM |
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150kg scales worthless, went straight off scale 
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if it aint broke... pull it off and upgrade it!
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carpmart
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| posted on 23/2/08 at 07:15 AM |
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quote:
Originally posted by 2b_pablo
150kg scales worthless, went straight off scale
How many did you buy?
You only live once - make the most of it!
Radical Clubsport, Kwaker motor
'94 MX5 MK1, 1.8
F10 M5 - 600bhp Daily Hack
Range Rover Sport - Wife's Car
Mercedes A class - Son's Car
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Schrodinger
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| posted on 23/2/08 at 02:24 PM |
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My wife tells me that this wouldn't work as they would not tell you their true weight, you would only know it weighed more
quote:
Originally posted by 2b_pablo
I think you get one of these:
gyrate
then get 5 of her pals
gyrate
gyrate
gyrate
gyrate
gyrate
then keep adding them to a big bar on the far side of the car until they balance the car.
Then jump on top of one and try to gauge her weight and multiply by the number required to balance the car.
Keith
Aviemore
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Dangle_kt
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| posted on 23/2/08 at 04:15 PM |
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I bought Tesco Value scales.
I checked each one was accurate enougth my weighing me, and any that over read/underread was adjusted so it was accurate. I knew that no wheel (on my
rolling chassis) would weigh significantly more than I do, so knew if it weighed me ok then 4 scales at £4 would be fine.
To further refine it you could buy 4 more and do as has been mentioned with two scales side by side on all four wheels. 8*£4 isn't tooo
expensive really.
quote:
Originally posted by carpmart
where does one purchase the scales at a good price but accurate enough to be worth the effort?
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jono_misfit
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| posted on 23/2/08 at 09:01 PM |
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Take your car to the local scrap yard (metal scrap etc.) and ask if you can stick it on the weigh bridge.
Our local one lets us do this for free plus they are fairly accurate (ish). Takes about 20 seconds.
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carpmart
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| posted on 23/2/08 at 10:12 PM |
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Can you send me a link to these? Cant find them on Tesco's web site?
Thanks
quote:
Originally posted by Dangle_kt
I bought Tesco Value scales.
I checked each one was accurate enougth my weighing me, and any that over read/underread was adjusted so it was accurate. I knew that no wheel (on my
rolling chassis) would weigh significantly more than I do, so knew if it weighed me ok then 4 scales at £4 would be fine.
To further refine it you could buy 4 more and do as has been mentioned with two scales side by side on all four wheels. 8*£4 isn't tooo
expensive really.
quote:
Originally posted by carpmart
where does one purchase the scales at a good price but accurate enough to be worth the effort?
You only live once - make the most of it!
Radical Clubsport, Kwaker motor
'94 MX5 MK1, 1.8
F10 M5 - 600bhp Daily Hack
Range Rover Sport - Wife's Car
Mercedes A class - Son's Car
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carpmart
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| posted on 23/2/08 at 10:13 PM |
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quote:
Originally posted by Dangle_kt
I bought Tesco Value scales.
I checked each one was accurate enougth my weighing me, and any that over read/underread was adjusted so it was accurate. I knew that no wheel (on my
rolling chassis) would weigh significantly more than I do, so knew if it weighed me ok then 4 scales at £4 would be fine.
To further refine it you could buy 4 more and do as has been mentioned with two scales side by side on all four wheels. 8*£4 isn't tooo
expensive really.
quote:
Originally posted by carpmart
where does one purchase the scales at a good price but accurate enough to be worth the effort?
You only live once - make the most of it!
Radical Clubsport, Kwaker motor
'94 MX5 MK1, 1.8
F10 M5 - 600bhp Daily Hack
Range Rover Sport - Wife's Car
Mercedes A class - Son's Car
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MikeCapon
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| posted on 24/2/08 at 10:53 AM |
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You don't need to buy 4 scales. Just find 3 wooden blocks the same height as the one set of scales and measure each wheel in turn. done this
before and v accurate.
www.shock-factory.co.uk
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2b_pablo
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| posted on 24/2/08 at 02:28 PM |
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yes i bought on st only and would have went round each wheel
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if it aint broke... pull it off and upgrade it!
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mad-butcher
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| posted on 1/3/08 at 01:57 PM |
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£2.99 a set from tesco
 
Rescued attachment corner weight setup.JPG
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blueshift
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| posted on 1/3/08 at 08:33 PM |
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Good work, that sack of sand did a pretty neat parking job there
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