It works exactly like a air pump (like a bicycle pump) with the difference that the fluid (air is a fluid!) is oil instead of air. All of these pumps have two check-valves; the suction valve which draws fluid from the reservoir and builds pressure in the pump cylinder as the piston is pushed down, and the discharge valve which opens to let oil into the ram cylinder and then close shut to support the force on the ram.
Thanks, Aruba, for your kind comment!! I invite you to watch my videos on solar energy!! It's amazing most people ignore this wonderful source of energy available to everyone at an incredibly low cost!! Please watch my playlists on solar energy!! Please find some of my green power clips at ua-cam.com/video/Vs6UJTQFKd8/v-deo.html
This is an excellent explanation. Makes me want to check out the rest of your work. I hope you have something on calculating the thrust of screw jacks.
Thanks for your kind comment!!! There are some very interesting types of jacks. Scree jacks ate just an application of the inclined plane. The finer the thread, the longer the ramp and the higher the lifting ratio. One very interesting approach is the friction jack used in old VW jacks. I used to own an old beetle and it worked just fine! It used to lift both the front and the rear wheels on one side of the small thing. You can find an explanation on that on ua-cam.com/video/hL9n-hLek7E/v-deo.html
@@eltunene I will check that out. I recently made a couple crude screw jacks out of nuts and bolts to get me out of a bind. It worked so well, I thought that i would try to calculate how much force I was generating. I skimmed through your channel for a minute. Looks very interesting. You are a man of many interests and abilities. I'm sure I'll be back to learn some new things.
This is one of the funniest comments I read in a while. I can't get that scenario out of my head now. The narrator did a great job explaining the concept though.
If you mean upside down, it will, if you add a small piece of pipe inside. MrDKDIY did it, please take a look at ua-cam.com/video/shxE9EZwfNc/v-deo.html&ab_channel=Mr.DKDIY
The explanation is wrong. It is a function of pressure. The pressure remains the same across the surface. As the surface area increases the force increases. The force is multiplied by the ratio of the surface area of the small piston to that of big piston.
@@mauricobian It is sufficient for a seeker of knowledge. He finds solutions for himself and a small correction is sufficient. If someone is in doubt they can ask questions. I'll not bother to post a video on this subject.
There are 2 principles at work. One is the force multiplication due to the lever arm, and the second principle is a force multiplication due to the difference in piston diameters between the small and large piston. If 1000 pounds of force is generated on the small piston having a frontal area of 1 square inch, then the hydraulic pressure generated is 1000 psi (1000 pounds per square inch). Then if the 1000 psi fluid acts upon the larger piston of say 4 square inches of frontal area, then the force generated is 4000 pounds (a 2 ton jack).
Thanks, Subol, for your kind comment! Please watch my other videos. If you find green energy interesting, please watch my videos about solar power at ua-cam.com/video/_FKp9_9KDkk/v-deo.html
@@eltunene My honor to have a reply from you Sir. I believe you are an actual teacher that lectures in some school or University. Your students are blessed to have you as a mentor. God bless you and your work!
This Animation is great but would be even better if you can add color, particularly for the oil and show it moving through color. I’m sure that would help other people understand.
Bottle jacks can have far superior load capacity and mechanical advantage for their size and weight compared to other types of jacks. The only downside is that they cannot lift as fast as the traditional lever jack assuming the operator has sufficient strength. What you gain in mechanical advantage, you lose in speed. Hence you want just enough mechanical advantage so that you can repeatedly pump the jack handle without fatiguing.
Thanks God anatomy books exist, I don't have to cut people open when I want to learn drawing human body studies :D But seriously, I'm at engineering school now and I'm working on our final project, I picked a pallet jack and this helped me a lot with design of the mechanism
What I don't understand is that as the pressure under A increases because of heavy weight it is lifting but how doesnt it reverse back the pressure when the valve is open to put more oil into it?
The valve is in fact opened by the pressure the small piston exerts upon the valve when the jack is being pumped. The pressure on the fluid is distributed evely (Pascal's principle) and exerts a pressure against the small piston too, but the pressure on the small piston is relatively small (psi), since the surface of the small piston is small compared to the surface of the big piston. It's a matter of pressure differences.
hi CHAVA I THINK YOU CAN HELP ME. FEW MONTHS AGO I BOUGHT A NEW JACK. I ASKED MY SON TO LOWER IT AND HE UNSCREWED IT TO AN EXTEND THAT THE FLUID COME OUT. I THEN TRIED TO REFILL IT AND IT NEVER CAME BACK TO LIFE. AND THEN YERSTERDAY I BOUGHT NEW 20 TON JACK. AND MY ASSISTAND DIDTHE SAME. THAT IT HOW I STARTED SERCHING ABOUT JACKS ON INTERNET. THIS IS WHAT I TRIED TO DO : I UNSCREWED IT COMPLETELY AS IT WAS ALREADY NOT WORKING.I THEN TRIED TO FILL OIL THROUGH THAT HOLE. NOTHING CAME RIGHT. I TRIED SECOND METHOT OF OPENING A PLUG THAT IS RUBBER ON THE JACK AND FILL IT WITH OIL AND IF I PUT MY FINGER ON THAT HOLE AND TRY TO PUSH ``A`` DOWN THE PRESSURE RISES ON MY FINGER. AND WHEN I TRY TO JACK IT UP IT DOES NOT. EISH TRY HELP ME
Dear Moshitoa, first of all, thanks for your question. I learned about hydraulic jacks back in the early 1950s, and then my life turned to electronics for the last 60 years. However, maybe I can be of help to you by trying to find more info on that. About hydraulic jacks, most of the information around is generic, since they work on the same principle. So I would suggest you to watch the following video at: ua-cam.com/video/uRNhUCExu5Y/v-deo.html Without saying a word, this guy cycled the hydraulic jack several times in order to rinse it, fill it and purge it. Notice he never removed the E valve at all, just opened and closed it as part of the recycling process. I think this wordless explanation is worth a million words! Please update me on your final results.
Very possibly there is a leak in some valve or seal, and under no load, you can pump enough oil to raise the big piston, but when under load the leak would be sufficient to retur the oil without raising the piston.
Dear Zöe, well, yes, however, if the motion has to be done for distances over 3ft, or so, you can try using an old power steering system, pump and all, driven by an electric motor. I have seen people use that for dump trucks, so it can be used for building a crane. Here are three links to videos on applications of power steering components for other uses - ua-cam.com/video/s3u7uWiFmak/v-deo.html - ua-cam.com/video/UXCwFsxTtII/v-deo.html - ua-cam.com/video/PSAtLNn8NwE/v-deo.html
@@atozbikes I thought the same thing, that the video should have mentioned that the difference in diameters of the cylinders itself produces a mechanical advantage, additionally and independently of the lever principle. I rewatched the video, and it does not mention this. Of course it acknowledges that there is a difference in piston diameters, but it does not explain the way in which the ratio of piston areas, each with one and the same pressure acting upon it, generates a multiplication of force in addition to the lever principle. It is the most basic principle of hydraulics, and it is conspicuously absent. He repeatedly mentions that the operative principle is the lever's multiplication of force, as if this were the one and only (or primary) principle at work. In some jacks, the hydraulics does more force multiplication than the lever. The way he explains the limitation of the lever, namely the limited range of motion, and his introduction of the hydraulic jack as getting around this limitation by repeated "swinging" back and forth, suggests that he may think the sole purpose of the hydraulics and check valves is to allow for cumulative levering (and not to further multiply force), as if the hydraulics here were just a sophisticated ratchet. Besides this big omission of how hydraulics work, he also says a couple things which might be construed as technically false. For example, about halfway through he says that the lever is used to drive the small piston down, which increases the force (on the big piston) several times. This is true in one sense. But say the pistons were configured in reverse, so that you were pumping instead on the large piston. If the ratio of their areas was large enough, the mechanical (dis)advantage from the pistons would more than offset the mechanical advantage from the lever, and his statement would be false -- the force exerted on the output piston would be less than the input force, even as the lever itself was increasing force. He also states the amount of fluid being pumped into A from cylinder B is small, which is why A doesn't move very far. Again, it has more to do with the ratio of cylinder areas. I could pump the same small amount of fluid from B, but if I were puming it into an even small cylinder, C, piston C would move a great distance! There is no need to get defensive about this. Everyone who produces high-quality materials like this video, for the noble purpose of educating others, should be open to feedback on how better to educate. It would be a very simple change to say explicitly that there are two principles at work, and give a brief explanation of hydraulics. Even if he wants to focus on the lever principle, he can easily mention hydraulic advantage via ratio of cylinder areas. It would give viewers a much better grasp of the bottle jack, and hydraulics generally, and would save confusion down the road.
There simply can't be a better explanation. Thanks!
Thanks a lot for your comment, Dmitriy!!!
I finally understand how a hydraulic jack works. Thank you very much. You are a great teacher!
Dear Neffo, thanks so much for your kind comment!!!
It works exactly like a air pump (like a bicycle pump) with the difference that the fluid (air is a fluid!) is oil instead of air. All of these pumps have two check-valves; the suction valve which draws fluid from the reservoir and builds pressure in the pump cylinder as the piston is pushed down, and the discharge valve which opens to let oil into the ram cylinder and then close shut to support the force on the ram.
That is exactly how it works!!!
Very easy to understand. Excellent explanation. Thank you very much.
Thanks, Coogee Bear, for your kind comment!!!
This explanation is indeed useful you made me understand it in a simple and direct way I thank you good sir.
Take care and God bless.
Thanks BensarT, for your kind comment!!!
Dude, that's perfect!!! Thank you so much. Perfect explanation.
Hi, amigo, thanks a lot for your kind comment!!!
WOW! I have learned so much and am thankful for this video! Now I know this machine inside out. Cannot wait to watch more of your vides! THANKYOU!!!
Thanks, Aruba, for your kind comment!! I invite you to watch my videos on solar energy!! It's amazing most people ignore this wonderful source of energy available to everyone at an incredibly low cost!! Please watch my playlists on solar energy!! Please find some of my green power clips at ua-cam.com/video/Vs6UJTQFKd8/v-deo.html
this is the exact explanation i was looking for! to the point and perfect!!! thank you
Thanks a lot, Sachini, for your kind comment!!
Very simple and clear. Thanks👏👏👏
Thanks, STFocus, for your kind comment!!!
This is an excellent explanation.
Makes me want to check out the rest of your work. I hope you have something on calculating the thrust of screw jacks.
Thanks for your kind comment!!! There are some very interesting types of jacks. Scree jacks ate just an application of the inclined plane. The finer the thread, the longer the ramp and the higher the lifting ratio. One very interesting approach is the friction jack used in old VW jacks. I used to own an old beetle and it worked just fine! It used to lift both the front and the rear wheels on one side of the small thing. You can find an explanation on that on ua-cam.com/video/hL9n-hLek7E/v-deo.html
@@eltunene I will check that out.
I recently made a couple crude screw jacks out of nuts and bolts to get me out of a bind. It worked so well, I thought that i would try to calculate how much force I was generating.
I skimmed through your channel for a minute. Looks very interesting. You are a man of many interests and abilities. I'm sure I'll be back to learn some new things.
Thanks. Adding the excellent visual explanation is very helpful.
Thanks for your kind comment!
Thanks for your kind comment!!!
This is how I imagine Fidel Castro would sound if he was explaining hydraulic jacks to me.
This is one of the funniest comments I read in a while. I can't get that scenario out of my head now. The narrator did a great job explaining the concept though.
😂 😂 only Fidel Castro wasn’t smart enough....although he will be explaining this like he is Bernoulli
Hahaha fidel
@Hyperion 666 Is Spanish, not indian, don't you see the other videos in Spanish? Is an Mexican Engineer. He upload videos in Spanish/English
@Hyperion 666 He is speaking Spanish if they helps.
Yeah. Fantastic explanation. Thanks.
Thanks, John Vine, for your kind comment!!!
Very nice explanation. Thank you
Thanks, Atkinsfan, for your kind comment!!
Thank you for the explanation
Very nice to learn something new
Thanks, ven jazz, for your kind comment!!!
Thanks, Orville, for your kind comment!!
Thankyuo
If you mean upside down, it will, if you add a small piece of pipe inside. MrDKDIY did it, please take a look at ua-cam.com/video/shxE9EZwfNc/v-deo.html&ab_channel=Mr.DKDIY
Thank you for the exelent explanation and drawing
Thanks, Carmen, for your kind comment!!!😍
The best explanation on UA-cam. Very clear and simple. Excellent!
Thanks a lot!!!
The explanation is wrong. It is a function of pressure. The pressure remains the same across the surface. As the surface area increases the force increases. The force is multiplied by the ratio of the surface area of the small piston to that of big piston.
@@petersonthattil9118 your correction isnt valid until you post your own video.
@@mauricobian It is sufficient for a seeker of knowledge. He finds solutions for himself and a small correction is sufficient. If someone is in doubt they can ask questions. I'll not bother to post a video on this subject.
Thank you sir for this information. my mind was clogged until now.
Thanks, for your kind comment!!
Nice Video
Very informative Video
Thanks
Thanks, Syed, for your kind comment!!!
Great video. Well presented and explained. Thank you. Good visuals too.
Thanks, Luke!! I am glad you liked it!!
This is marvelous. Thank you sir for the perfect Explanation
Thanks a lot for your kind comment!!!
I am an Egyptian engineer & designer and that is very good.
Thank you very much!!!
هلا ياباش مهندس
Who the hell disliked this useful explanation. Thankyou sir.
Thanks a lot, Dhanesh!!
very useful and helpful tutorial , Thanks man.
Thank you, Abdullah, for your kind comment!!!
There are 2 principles at work. One is the force multiplication due to the lever arm, and the second principle is a force multiplication due to the difference in piston diameters between the small and large piston. If 1000 pounds of force is generated on the small piston having a frontal area of 1 square inch, then the hydraulic pressure generated is 1000 psi (1000 pounds per square inch). Then if the 1000 psi fluid acts upon the larger piston of say 4 square inches of frontal area, then the force generated is 4000 pounds (a 2 ton jack).
Very clear explain, thank you.
Thanks for your kind comment!!!
excellent video
Thanks, Yoko, for your kind comment!!!
Thank you for uploading this video. Its very much helpful.
Thanks, Subol, for your kind comment! Please watch my other videos. If you find green energy interesting, please watch my videos about solar power at ua-cam.com/video/_FKp9_9KDkk/v-deo.html
good video
Dear friend, thanks so much for your kind comment!!
The demo is good, but the reason why so many people disliked it is the voice in the beginning is shocking. Other than that, the demo is great.
Nice graphics.
Thanks, Chris, I appreciate your kind comment!!! Regards!!!
Good explanation...
Thanks, Muhammad, for your kind comment!!!
Simply. Amazing.
SUBSCRIBED!!
Thanks, Ulisses, for your kind comment!!!
@@eltunene My honor to have a reply from you Sir. I believe you are an actual teacher that lectures in some school or University. Your students are blessed to have you as a mentor. God bless you and your work!
Simple and concise, brilliant.
Thanks, Tyrant67, for your kind comment!!
nice video
This Animation is great but would be even better if you can add color, particularly for the oil and show it moving through color. I’m sure that would help other people understand.
Thanks, Cesar, for your kind contribution. I'll keep that in mind for future videos, thanks a lot!!
Thank you, Great explanation
Thanks, Kaleabe!!! Please watch my videos on solar power, the energy of the future!!!
Thanks for your explanation.
Thanks, Sachin, for your kind comment!!
Bottle jacks can have far superior load capacity and mechanical advantage for their size and weight compared to other types of jacks. The only downside is that they cannot lift as fast as the traditional lever jack assuming the operator has sufficient strength. What you gain in mechanical advantage, you lose in speed. Hence you want just enough mechanical advantage so that you can repeatedly pump the jack handle without fatiguing.
Thanks for your contribution!!
Hydraulics are such amazing but surprisingly simplistic machines. Wwoowww
I totally agree!!!
Very useful 👍
Thanks, Anna, for your kind comment!!!
Very good demo
Thanks!!
very clear! thanks bro
Thank you, dear Franc, for your kind comment!!!
Very nice ! Thank you for teaching me that subject it helps me a lot with what I’m doing
I am very glad to be of help!! Thanks for your kind comment!!
Very useful 🙏🏽
Thanks, Alieu, for your kind comment!!!
Good explanation of the principles involved. Thanks.
Good video
Thanks, Amiral, for your kind comment!!!
Was all Base on pascal principle. Nice work of explanation
Thanks, Imoisili for your kind comment!!!
very nice technic to explain
Wow nice it's simply and clear to understand thanks
Thank you very much, Prem Bhai!!!
Brilliant. Rebuilding one and this is exactly what I was in need of.
Thanks, Matt, for your kind comment!!
Welcome to weird youtube recommendations. We will now meet after 10 years when this appears in my recommended again.
Nice video!
Thanks, Bottle Jack for your kind comment!!
Thank you for making this video
Thanks, Glorious Bliss for your kind comment!!
A nice explanation. Thanks
Thaks, tito tito!!
Thanks so much. Very clearly done.
Thanks, MindenMoose for your kind comment!!
Thanks for the video, dude. Very helpful!
Thank you, Voltaire, for your kind comment!!
Excellent
Thanks, Azhar, for your kind comment!!!
Great movie Sir.
Thanks, Adam, for your kind comment!!
Good . Show the oil flow in different colour
Good contribution, thanks!!
short simple and educative. thanks
Thanks Navin, for your kind comment!!!
Thank you so much
Excellent!
im about to cut (open) my hydraulic jack to see how it works. ur video save my jack. thanks
Scientific curiosity, I used to do the same with all my toys, ha, ha.
Thanks God anatomy books exist, I don't have to cut people open when I want to learn drawing human body studies :D
But seriously, I'm at engineering school now and I'm working on our final project, I picked a pallet jack and this helped me a lot with design of the mechanism
Fucking amazing video. I own a hydraulic jack and always wondered how it worked. Im baffled by its utter simplicity
Thanks
Thanks Martin!!!
good explain brother
Thanks, Evergreen, for your kind comment!!
I'm grateful to you.
Wonderful video, these are the best types. Short and quick explanation.
Thank you very much!!!
Awesome
Thanks Dr Flowerking, for your kind comment!
thank you
Thank you, Izyane, for your kind comment!!
So clear, thank you.
I had an idea on how they worked, but it's nice to see it explained
Thanks a lot!!!
what will happen if u increase the diameter and height of s
mall cylinder
Very good explanation!
Thank you so much, I can understand it!
Thanks, Diana, for your kind comment!
that is an excellent demonstration. Thank you
Thank you very much!!!
What I don't understand is that as the pressure under A increases because of heavy weight it is lifting but how doesnt it reverse back the pressure when the valve is open to put more oil into it?
The valve is in fact opened by the pressure the small piston exerts upon the valve when the jack is being pumped. The pressure on the fluid is distributed evely (Pascal's principle) and exerts a pressure against the small piston too, but the pressure on the small piston is relatively small (psi), since the surface of the small piston is small compared to the surface of the big piston. It's a matter of pressure differences.
Thank you, it helped a lot!
Thanks, Keith, for your kind comment!!!
excellent video! Thanks
Thank you very much for your comments!!
very good
hi CHAVA I THINK YOU CAN HELP ME. FEW MONTHS AGO I BOUGHT A NEW JACK. I ASKED MY SON TO LOWER IT AND HE UNSCREWED IT TO AN EXTEND THAT THE FLUID COME OUT. I THEN TRIED TO REFILL IT AND IT NEVER CAME BACK TO LIFE.
AND THEN YERSTERDAY I BOUGHT NEW 20 TON JACK. AND MY ASSISTAND DIDTHE SAME. THAT IT HOW I STARTED SERCHING ABOUT JACKS ON INTERNET.
THIS IS WHAT I TRIED TO DO : I UNSCREWED IT COMPLETELY AS IT WAS ALREADY NOT WORKING.I THEN TRIED TO FILL OIL THROUGH THAT HOLE. NOTHING CAME RIGHT.
I TRIED SECOND METHOT OF OPENING A PLUG THAT IS RUBBER ON THE JACK AND FILL IT WITH OIL AND IF I PUT MY FINGER ON THAT HOLE AND TRY TO PUSH ``A`` DOWN THE PRESSURE RISES ON MY FINGER. AND WHEN I TRY TO JACK IT UP IT DOES NOT.
EISH
TRY HELP ME
Dear Moshitoa, first of all, thanks for your question. I learned about hydraulic jacks back in the early 1950s, and then my life turned to electronics for the last 60 years. However, maybe I can be of help to you by trying to find more info on that. About hydraulic jacks, most of the information around is generic, since they work on the same principle. So I would suggest you to watch the following video at: ua-cam.com/video/uRNhUCExu5Y/v-deo.html Without saying a word, this guy cycled the hydraulic jack several times in order to rinse it, fill it and purge it. Notice he never removed the E valve at all, just opened and closed it as part of the recycling process. I think this wordless explanation is worth a million words! Please update me on your final results.
doing a good job & like this
Thanks, Emma, for your kind comment!!!
Very useful to me.. I understood it well
thanks its really educating.
Thanks
Thank you for watching my videos!!!
assuming since it's high pressure, can't these explode?
If you try to lift excessive weight and apply too much force, it might develop leaks, something has got to give. Yes.
Clear as mud.
You are right!!!
Nice video
Great explanation sir...
Thanks, p dineshkumar!!
Why would the jack work perfect under no load and not work once load is added
Very possibly there is a leak in some valve or seal, and under no load, you can pump enough oil to raise the big piston, but when under load the leak would be sufficient to retur the oil without raising the piston.
Thanks for the reply so I guess the jack would be garbage
Very good
Thanks a lot, Umesh!!!
Very nice
Thanks Ram Babu!!!
excellent
Thanks, Ultraslashism, for your kind comment!!!
perfect🙂
Thanks, Daniel, for your kind comment!!!
thanks
Thanks, Al, for your kind comment!!
Can it be used for a machine that picks up heavy heaps of wood?
Dear Zöe, well, yes, however, if the motion has to be done for distances over 3ft, or so, you can try using an old power steering system, pump and all, driven by an electric motor. I have seen people use that for dump trucks, so it can be used for building a crane. Here are three links to videos on applications of power steering components for other uses - ua-cam.com/video/s3u7uWiFmak/v-deo.html - ua-cam.com/video/UXCwFsxTtII/v-deo.html - ua-cam.com/video/PSAtLNn8NwE/v-deo.html
Once video now I know how it works
Thanks, Tamejay, for your kind comment!!! I invite you to watch my videos about solar power, they are at ua-cam.com/video/Vs6UJTQFKd8/v-deo.html .
thank you. very helpful.
Thanks, Mahmoud, for your kind comment!!!
Hydraulic is a very important field and it is very useful for force magnification
Nice Explanation
The Piston Diameter difference of A & B and force increase due to it should have been mentioned, I suppose.
It was, don't be a jerk, just pay attention, or make your own video
be ready to listen to or read the adverse comments, or else disable the comments. Thanks
@@atozbikes I thought the same thing, that the video should have mentioned that the difference in diameters of the cylinders itself produces a mechanical advantage, additionally and independently of the lever principle. I rewatched the video, and it does not mention this. Of course it acknowledges that there is a difference in piston diameters, but it does not explain the way in which the ratio of piston areas, each with one and the same pressure acting upon it, generates a multiplication of force in addition to the lever principle. It is the most basic principle of hydraulics, and it is conspicuously absent.
He repeatedly mentions that the operative principle is the lever's multiplication of force, as if this were the one and only (or primary) principle at work. In some jacks, the hydraulics does more force multiplication than the lever.
The way he explains the limitation of the lever, namely the limited range of motion, and his introduction of the hydraulic jack as getting around this limitation by repeated "swinging" back and forth, suggests that he may think the sole purpose of the hydraulics and check valves is to allow for cumulative levering (and not to further multiply force), as if the hydraulics here were just a sophisticated ratchet.
Besides this big omission of how hydraulics work, he also says a couple things which might be construed as technically false. For example, about halfway through he says that the lever is used to drive the small piston down, which increases the force (on the big piston) several times. This is true in one sense. But say the pistons were configured in reverse, so that you were pumping instead on the large piston. If the ratio of their areas was large enough, the mechanical (dis)advantage from the pistons would more than offset the mechanical advantage from the lever, and his statement would be false -- the force exerted on the output piston would be less than the input force, even as the lever itself was increasing force.
He also states the amount of fluid being pumped into A from cylinder B is small, which is why A doesn't move very far. Again, it has more to do with the ratio of cylinder areas. I could pump the same small amount of fluid from B, but if I were puming it into an even small cylinder, C, piston C would move a great distance!
There is no need to get defensive about this. Everyone who produces high-quality materials like this video, for the noble purpose of educating others, should be open to feedback on how better to educate. It would be a very simple change to say explicitly that there are two principles at work, and give a brief explanation of hydraulics. Even if he wants to focus on the lever principle, he can easily mention hydraulic advantage via ratio of cylinder areas. It would give viewers a much better grasp of the bottle jack, and hydraulics generally, and would save confusion down the road.
What a helpful video!
I'm doing a project involving this mechanism. May I ask for your permission to use your video for presentation?
Yes, but please do not download it!