| Author | Message | ||
     Bob uk- Unregistered guest Posted From: 94.197.122.83 |
2240 lbs is a ton. Long ton. 2500 is approximately 1.1 tons. This means that the hydraulic system in a shadow is working at 1.1 tons per square inch.The sphere thread diameter is 15/16 which is approximately 0.75 square inches of surface area. 1.1 TONS on 0.75 is approximately 0.80 tons per square inch. There is a lot approximatelys in the above and I missed out the holes. So call it over O.5 tons per square inch. That is how much pressure is on the sphere joint. This is perfectly safe unless the joint is not up to scratch. If the joint were to be loosen under pressure then there is 1/2 ton on those threads. Which will strip the last couple out and the sphere will try to propel it self into what ever it hits. like a cannon ball. 99.9 % of people will understand the above and most will already know. Mucking about with spheres is like standing under a badly supported 1/2 ton weight. (Message approved by david_gore) | ||
| Chris Miller Prolific User Username: cjm51213 Post Number: 190 Registered: 5-2013 |
A ton is 2,000 lbs, and a metric ton is 1,000 Kg = 2,200 lbs. Nobody uses "long ton", unless they specify "long ton". > 2500 is approximately 1.1 tons. Since a ton is 2,000 lbs, than 2,500 lbs is exactly 1.25 tons. > The sphere thread diameter is 15/16 If you're talking about the threads between the ACV and the sphere, then it is 9/8". > ...which is approximately 0.75 square inches of surface area which is more closely, approximately .69 square inches. > 1.1 TONS on 0.75 is approximately 0.80 tons per square inch. 1.1 tons on 0.75 square inches is approximately 1.47 tons per square inch, and 2,500 lbs on .75 square inches is 1.67 tons per square inch, using the correct definition of ton. > the sphere will try to propel itself > into whatever it hits like a cannon ball. Well, your premise is ridiculous, because nobody would intentionally do what you suggest, unless they didn't know any better or didn't realize what they were doing, but it is worth considering, so ... Let's suppose you have a brand new, fully nitrogen charged sphere... which is threaded to 50% of the depth necessary to consider the ACV attached to the sphere. Why has the brake fluid not all leaked out? You only have 19.2 cu.in. of brake fluid, and it is under initial pressure of 2,500 PSI. At 50%, you will have brake fluid everywhere, but in the sphere. If you don't have brake fluid everywhere, then I think the o-ring at the interface between the ACV and the sphere is probably not doing much good, and the likelihood of having it displaced under pressure by an improperly torqued sphere is zero. And even if you succeeded, the "salt and pepper shaker" apertures are pretty small, meaning they are not large enough to eject enough mass to move much. And you have less than 11 ounces of brake fluid mass anyway. So, the short conclusion is, if you were silly enough or distracted enough to disconnect a fully pressurized sphere from its ACV, then you will quite likely make a huge mess, but I think the "cannonball" thing is a bit overblown, and pretty unlikely... And remember, I have removed a bleed screw from a fully pressurized sphere, which is a much larger aperture, so I can tell you, it makes a mess and spews brake fluid everywhere, but doesn't cause the sphere to take off like Sputnik. for your consideration, Chris. | ||
| Bob uk Unregistered guest Posted From: 94.197.122.72 |
I did those calculations from the top of multiple head which why I called a lot less. The bleed screw hole is 3/8 UNF with a smaller, I guess 1/8 hole at the bottom of the seat.It isnt a lot bigger than the nipple hole. I use metric in which tonne is a long ton more or less. Imperial system is inferior for mental arithmetic. I can just as easily calculate to 5 places of decimal using a calculator. In the UK correcting some mental arithmetic that is merely an estimation for an analogy purpose is crass and boorish. It wouldn't matter if the end result was 1/4 of ton it will still kill you. I cannot understand why you persist in refusing to . that mucking about with charged spheres is dangerous. You seem not to understand that a charged sphere has stored energy and if you release all that Energy fast it will kill you. It will tear and arm off, bang will burst your ear drums shatter glass. No doubt you will get you calculator out and start measuring time to discharge rates. } (Message approved by david_gore) | ||
| Richard Treacy Grand Master Username: richard_treacy Post Number: 3050 Registered: 4-2003 |
Rubbish. We are not on an American site. This is an Australian site. The 2,000lb ton is a USA thing and not for Australia. Similarly, we use litres but there are about 4.5 litres to the gallon unit still sometimes used in Australia and the UK. A US gallon is only about 3.8 Litres. Australia and the UK use the tonne (1,000 kg), but the ton when it is referred to is still 2,240 lb as it always has been here. Too many dodgy measures, methods and materials are poisoning these threads. Let's try to stick primarily to Australian Standards on this site. RT. | ||
| Geoff Wootton Grand Master Username: dounraey Post Number: 454 Registered: 5-2012 |
Also, as a measurement of speed Australian/UK ton = 100 MPH US ton = 89.28 MPH | ||
| Bob uk Unregistered guest Posted From: 94.197.122.76 |
Also in the UK we use Tads Smidgens and Pinches. To refine the system we then base division on 12 so that the unit can be divided 2 3 4 and 6. So 12th of a tad is a tadimole. A 12th of smidgen smidgimole. And a 12th of a pinch is a pinchbit Pinches are used mainly for measuring salt. (Message approved by david_gore) | ||
| David Gore Moderator Username: david_gore Post Number: 1433 Registered: 4-2003 |
Bob, You are bringing back memories of times long gone when the machinists at work continually used tads, smidgens and pinches when tool setting for a new job. True craftsmen who took great pride in their work especially their accuracy when finish machining. | ||
| Bob uk Unregistered guest Posted From: 94.197.122.85 |
The system varies from region to region and trade to trade. The Welsh system is based on 7 not 12 and they use tafs. Engineers work to the nearest thou Cabinet makers 10 thou And builders work on the nearest house. I am allowed because my mum was Welsh. (Message approved by david_gore) | ||
| David Gore Moderator Username: david_gore Post Number: 1434 Registered: 4-2003 |
Hi Bob, Go scratch as my grandmother often said - both my maternal grandparents were Welsh from the Rhondda Valley and both my great-grandfather and grandfather sang in the Capel Rhondda choir for the first public performance of Cwm Rhondda in Hopkinstown in 1907. I am the current custodian of my grandmother's Welsh family Bible dating from 1746 and my grandfather's Eisteddfod medals for singing [unfortunately I didn't inherit their talent for singing but I did inherit their willingness to go underground in mines]. | ||
| Jan Forrest Grand Master Username: got_one Post Number: 620 Registered: 1-2008 |
You've forgotten the 'gnat's' as a measure of a dimension. eg. one foot is 355 and a gnat's mms. | ||
| Richard Treacy Grand Master Username: richard_treacy Post Number: 3051 Registered: 4-2003 |
And a short-boot Silver Dawn with the light bumpers is precisely one perch long. Or one rod if you prefer, the same as one pole. | ||
| Geoff Wootton Grand Master Username: dounraey Post Number: 456 Registered: 5-2012 |
My wife uses the blip system when using a tape measure for DIY. So 10.25 inches becomes 10 inches and a blip. | ||
| Bob uk Unregistered guest Posted From: 94.197.122.84 |
Dave, My mum came from Tintern. Mis spelt. Tintern sort of moved about between the eng Welsh border. When I 14 she took me to see where she lived and the cottage was derelict. 1990 we went to see Tintern Abbey and the cottage has been rebuilt and is now owned by UK national trust. I speak a small amount of Welsh. A micro wave is a poppyda ping. My mother spoke Welsh and while in Brecon a Welsh lad said in Welsh that the English were not nice ( polite way on putting it) My mum ripped into him so fast he had to have it translated by my cousin into English and then into Welsh. I was told off at infants school for speaking in Welsh. Welsh is very tonal and pitch based which is why Welsh choirs are so good. (Message approved by david_gore) | ||
| Bob uk Unregistered guest Posted From: 94.197.122.88 |
We abandoned the gnats cock in the 1970 stupid idea conference with the EU. We decided that because gnats are difficult to catch to use ants dickys in stead because ants are easy to catch for comparison purposes. In return the French dropped frogs toe nails and introduced snail hairs. This why the Welsh went base 7 with tafs. 7 tafs to a snail hair. (Message approved by david_gore) | ||
| Chris Miller Prolific User Username: cjm51213 Post Number: 200 Registered: 5-2013 |
Aren't you guys forgetting about the smallest increment known to man -- The RCH? A CH is already pretty small, but the red one is pretty much indivisible... | ||
| Bob uk Unregistered guest Posted From: 94.197.122.79 |
Of course the Germans had to be in on the deal and took control and came up with these stupid micron things which are useless because every body thought he was saying my crons which we thought typical, the Germans as usual were thinking about food. (Message approved by david_gore) | ||
| Jan Forrest Grand Master Username: got_one Post Number: 627 Registered: 1-2008 |
Ruddy Krauts! They gave the micron a stupid lower case 'u' with a longer downstroke as its symbol. It's not on a standard keyboard! | ||
| Chris Miller Prolific User Username: cjm51213 Post Number: 206 Registered: 5-2013 |
It's not a funky "u", it is a lower case "mu", which is a greek letter equivalent to our "M", and it means "micro-" in any context, which is 10E-6, or "one millionth", in words. Let's see what happens if I try to put one here:[μ]. Well, I can see it as I compose, but "message preview" converts it to an "http encode" value, so it probably won't come through... For you consideration, Chris. | ||
| Bob uk Unregistered guest Posted From: 94.197.122.85 |
My cat uses mu, when he is calculating the quality of milk he needs, I asked him what units he was using and he said mu. After the measurement unit conference they discussed the correct shape for bees knees and the Italians decided that if the bees wore very tight trousers then the nobbles wouldn't show. Unfortunately this has lead to shortage of tight trousering and bees. But this was solved by the Spanish with Spanish flies fitted with honey pots. Jan, To do a mu on a PC simply use a pubic hair, and stick to the screen with booger. Again boogers have a specific measurement system of stickiness called the greenie coefficient. Unfortunately the environmentalists complained so we ignored them. (Message approved by david_gore) |
