Blew Hydraulic hose on FEL, instant drop.

[cqaigy2]

Glad no one was hurt.

 

[PILOON]

LOL, had a 'dozer one time and was pushing a pile of stumps/scrap etc when a hose snagged.
Well I took a hot oil bath, man what a mess.

 

[SPYDERLK]

So what happens inside the cylinder once the perfect vacuum is reached assuming the piston seals hold? I understand that the load continues to drop as the vacuum is not enough to hold the load. It's almost like we create a perfect vacuum but then the piston continues to "increase the perfect vacuum". What is actually happening in this scenario?

Exactly what you say, but hard to get a mental "handle" on. Bottom line, it takes zero extra force to expand a perfect vacuum. If you can get ahold of a syringe you can prove it to yourself. ​

 

[Fallon]

Exactly what you say, but hard to get a mental "handle" on. Bottom line, it takes zero extra force to expand a perfect vacuum. If you can get ahold of a syringe you can prove it to yourself. ​

Atmospheric pressure is only 14.5psi. So not much compared to hydraulic pressures.

Fun science experiment. Try to suck water up a 31' straw/hose, or at least one that has the end 31' higher than the other. A friend/science teacher would give anybody in his class an automatic A for the semester if they could do it & prove it. A column of water can't be pushed up over that 31' by a column of air miles high. The weight of a 1 square inch column of air comes out to 14.5psi.

Physics gets more rational when you realize you can't actually suck anything anywhere. It's actually just getting pushed by the difference in atmospheric pressure an lower pressure. Also why compressed air is usually more effective than a vacuum cleaner.