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| Weighty project! |
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| John Hill:
Turn a chunk of round scrap and make two big buckets of swarf... Turned another piece to be a cosy fit and cut a groove in it for an o-ring. Put the two pieces together and fill the gap with oil. Put the ensemble under the end of this shipping container. There is a 100Bar pressure gauge on the end of that copper pipe! The piston is 114mm in diameter and according to my calculation and indication of 100Bar would be 10 tonnes, here we can see a much lower reading showing this end of the container weights about 1.4 tonnes, I will need to do the other end too and add them together but I am guessing this fairly empty container weighs 3 tonnes. This is useful information as it shows I can put 3 tonnes of my treasures in there and still get it shipped to our new house at the lowest freight rate! |
| Trion:
Good thinking, will keep this in mind if i ever need to weigh something that large! :thumbup: |
| Stilldrillin:
Well thought through John! :clap: :thumbup: As someone used to say.... "Think literally. Think laterally". David D |
| AdeV:
Hmmm, I like that a lot.... where did you find the calculations (or are you just extremely brainy...)? I can see this being adapted to make a low-cost set of corner scales for a race car, for example... |
| John Hill:
--- Quote from: AdeV on October 14, 2010, 04:18:00 AM ---Hmmm, I like that a lot.... where did you find the calculations (or are you just extremely brainy...)? I can see this being adapted to make a low-cost set of corner scales for a race car, for example... --- End quote --- Hi AdeV Calculations are not difficult, I used an on-line circle calculator to find the diameter for a particular area. Say you want your load cell to weigh 500Kgs, so choose a gauge with a scale of, or some multiple of, 0 to 500. Lets say 500 KPa. (Thats about 75 PSI) Looking up an online converter I find that 500KPa is equal to 0.05098 kgs per square millimetre. So we divide our 500Kgs by 0.05098 = 9808 sq mm required for our load cell. Look up a handly online circle calculator and I find a circle of 9808 sq mm area has a diameter of 111.75mm. Cheers |
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