WHAT MAKES IT WORK? #17 pt 2 of 2 "How a Hydraulic Jack Works" tubalcain
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- Опубликовано: 15 сен 2024
- In this 2 part video, I disassemble a bottle jack, and show how it works.
Watch all the videos in this HOW IT WORKS series.
SUBSCRIBE if you enjoy the content!
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#hydraulics#bottlejack#machineshop#machinist
Not many viewers eh!
5 years later and 230,000 + views.
Still by far the best description of a bottle jack around.
Thanks Mr Pete
trUe, yet-that’s wats so sad☹️.
Mr. Pete
Ignore the naysayers. You do a great job and provide a great service, true to your many years as a teacher.
Thanks,
John
Thanks for watching
Just want you to know you've given me a tremendous amount of knowledge that I have actually used in my life. I picked up and restored an old atlas lathe over the past few months...and due to your teaching... i knew how to do it, and afterwards and onwards... how to actually use it. I don't think I've ever left you a comment before. Due to your experience with these trolls, I feel now that I should have. Thank you for all you do. You are appreciated.
I've used this type of jack for over 30 years but never looked inside. Your videos where very educational. I watched and enjoyed both of them. Thank you for sharing your knowledge.
+Make Build Modify Thanks for watching
Mr Pete, This is why your videos are so invaluable. There are scores of books explaining how various mechanisms operate. But there is nothing like an actual demonstration in three dimensions. If one picture is worth a thousand words, your videos are worth millions. And I will bet your videos will be around long after all of us are gone.
+Todd Anonymous THANK YOU very much!!!!!!!!!!!!!!
Sir,
I'd just like to say that I've greatly enjoyed your videos for many years now, and I have learned a great deal from watching you work.
Even though I've been a working machinist for about fifteen years now, I constantly pick up little tricks and techniques from watching your (and many of the other RUclips machinist's) videos.
I also very much enjoy watching you build patterns and make castings to build your little engines as well as the digressions that jump out every so often. Very amusing for a similarly grumpy soul (though one who's ~40 years your junior).
Thank you for the work you put into your videos. As someone who has also started doing video work inside a machine shop, I know first hand how much work it is to come up with half an hour of usable content.
Keep up the good work, sir. Your efforts are not going unnoticed or unappreciated.
+LogicIndustries Thanks for watching & a making a nice comment. I'll check out your vids.
thank you, keep up the great work, been using jacks for over 40 years, and learned more from you in 2 videos than any teacher showed me.
we need teachers like you in our schools again
Dont listen to the critics Mr. Pete. Theres ALOT of people like me who absolutely look forward to all of your videos, especially the 'What Makes It Work" series! Some people have nothing else better to do than complain.
Incredible timing! Yesterday my floor jack decided to teach me it does not like being neglected. lack of use. Time for a rebuild. Having an advanced organizer will ease my pain, no doubt. Thanks! Mounting my rotary table today using your techniques. Thanks again, Ron
Ignore the naysayers. Many more people appreciate your work than not. I love your explanations even if I think I already understand how the thing works. You always surprise me with a bit of knowledge. THANK YOU!!!!!
such a great explanation between the 2 videos. i used to carry a 1 ton bottle jack for my 7000 lb travel trailer, changed it to a 4 ton. huge difference in the effort required to lift an axle to change a tire.
a sincere thank you for the efforts you put into your videos, the haters and trolls can go pound salt!
👍👍👍
Thanks for this video. No doubt many viewers know the basic principals of how the jacks work but to see where the valves are located and the oil ways go is really a huge help on diagnosing jack problems. You are offering a sterling service to your viewers.
Thanks
Mr. Pete, your videos are priceless to the majority of us! Please don't let a very few trolls discourage you, because you have the "gift" of teaching. Those trolls are simply jealous of your knowledge and your "gift" of being able to communicate that knowledge to others. Tt.
When I was a small child, I remember that my father had to borrow a bigger jack from a friend to change the tire on our combine (harvester). It was either 50 or 100 ton capacity, but what I remember that was unique about it was that it had two pumps. A large one that didn't develop much force but quickly moved the ram up to the starting position, and a smaller one for the actual jacking.
I really like that you took the time to measu.re the cylinders and work out the hydraulic advantage and then demonstrated the proportion with an actual measurement. Well done Sir!
Ignore the critics as best you can and be assured the rest of us are enjoying all your efforts. 95,000 subs, you're going to get some jerks, as you probably did in your teaching days.
This was a good one Pete. I was a mechanic for 25 years and used countless types of bottle jacks and did not know the workings inside. Guess I never thought much about it. Really enjoyed this.
Exelent work. I will show my kids this video. Some people have no idea how hydrolics work and this is one of the reasons why we live in so much comfort today. I have adult friends that think brake fluid is to lubricate the brake pads. Thanks again.
Excellent !!!!!!...Lyle Thank You....Your efforts are VERY much appreciated....Please don't slow down...."WE" all look forward to your videos....You always offer the viewer a positive, honest, informative adventure .....again....don't slow down ! .....Thanks Lyle....J M
Great instructional video Mr. Pete. I knew nothing about how a jack worked and now feel like I have a good grasp of it. Thanks for sharing.
Mr. Peterson,
Thank you! I was suprised to hear you say that you had a lot fewer people watching your how-it-works videos. But after thinking about it some it started to make a little more sense. Most of your audiance would be from people who own lathes and wish to learn more about their operation and upkeep. I love your how-it-works videos because I grew up with mechanics in the family and they taught me how to repair things, but my schooling didn't have class that taught hands on milling or how things worked. If they hae I doubt I would have been interested any way at that age.
As I have gotten older though I find myself much more interested in this and astounded at how much overlap there is from the mechanical world and the electronics world. As a result, I love learning more about more areas of life. And at 53 years old I find I'm still a student even though high school is far behind me.
Again, thank you sir!
+Samich Hunter Thanks for watching
Thanks proble saved me a ton of money
I've watched most of your videos, and I learn something ( almost always many things) in almost every one. Keep taking the time, please. There's going to be a time not so far away where there won't be shop teachers. You might be the only way my daughter (currently second grade) could learn these skills. Thanks!
Very good demonstration. I have never seen one taken apart. Thank you for explaining how it works!
Thank you! I recently was given a Hein Werner O'Boy floor jack and a 12 Wilmar bottle. The explanation you give provided me with the basic information to rebuild both!
I never thought of how simple the mechanics of hydraulic systems really are. Great video. Thank you for a GREAT lesson.
I've been staring at some jacks I inherited from my dad and grandad for years wondering if they were worth repairing. Now thanks to your explaination I will have a go at fixing some of them.
Thanks for taking the time to so thoroughly explain how it works, and for also showing the pathways of all the ports/holes. I and many thousands love all your videos, especially the how it works series. I believe these videos will be watched for many generations to come. That's a great legacy Mr. Pete!
Tubalcain,
Thank you so very much for all that you have done through out your teaching years. You have provided priceless instruction through your schools as well as here on you tube.
Thank you.
Excellent presentation and explanation of how a bottle jack works. I have an eight ton jack that I wanted to repair and now I have the answers to some of my questions. Thank for the video.
What an excellent teacher. Great to learn from someone else's wisdom and experience. And he did it all without cussing. Amazing!
Glad you enjoyed it!
Hey Mr. Pete. Don't get to discouraged about viewership on your how it works series. I just want to let you know that I enjoyed this one on the jack. I already knew how they worked but you provide some good information. I had one from a swap meet that always leaked down under pressure. It also came from that 5 letter country. When you showed how much dirt was in yours I drained the oil out and flushed it several times with kerosene. Man did the dirt come out of it. Refilled it with jack oil and now it holds 4 ton without a problem. So even though you don't get a lot of views, you did help this old dog out.Al
+ww_big_al Thanks for watching
ww_big_al ,
Dear Sir,
hi, i am a final year student of mechnical diploma. I have opted hydraolic jack design
as my project work. I have some problem in designing the hydralic circuit . Sir, can you spare some moments from ur busy schefule to guide me about the circuit. Other theoratical design calculations complete, only the design of appropriate hydraulic circuit is pending. From your coments,I getherred that you have an execllent knowledge about the subject matter and if you desire to guide some one, you can do so . May i hope you shall spare some moments from your busy schedule to guide . It shall be great of uou, My e mail is qmes03@gmail.com & whatsapp no is +9 9888042652 for any interaction and advice for guiding.
Sir, should i expect your honourly guidance. With sincerest regatfs
ww_big_a could you please tell me where and how much fluid to put in a big red torin air and hydrolic jack?
You are NOT wasting your time on videos like these. Thank you.
Mule
Very interesting how it works when you really tear in to it. Great job explaining the how's and why's.
Very informative. Used them loads of times but never really thought how they actually work!
Excellent demonstration in this series. Thank you for the time and all in presenting these videos.
Let haters hate ignore them. I have enjoyed many of your videos and we all need more people like you who are willing to put things on video, so others can learn. God bless, keep on!!!!!!!!!!
Thanks for your hard work on making these videos. I feel many of the kids today are growing up with little or no training in these areas leaving them with little common sense. Your work and publishing it in a medium that they are likely to access works to correct some of the lack of training their parents should have been more active in.
THANK YOU, Mr. Pete for the ALL the how it works videos.
I marvel at the amount of thought you go through to give your class (us) a lesson in all things fun. Even though i understand the mechanics behind the bottle jack i never put the mental time into it to this degree. That is just one of the many reasons i enjoy your gift to us in the form of video. THANK YOU SO MUCH ! I am in dept to you for your knowledge and kindness of sharing your time and money.
👍👍👍
I can't believe I never knew that the visible 'bottle' part of a bottle jack is only a reservoir! I thought I was old enough to know better. Thanks (again) for sharing your knowledge!
Watched both videos on 8/3/2018. You have done a very good job of explaining and showing how a hydraulic bottole jack works. There are many variations in the construction of manyof these jacks, but they all work the same, but some of the cheap ones cannot be disassembled as easily,. Getting the air out can be very frustrating. You said that you are not getting many comments, but you are making a very valuable contribution. Thank you.
Thank you very much for commenting and watching
Very informative, you have excellent teaching skills, now I understand bottle jacks better then I ever did.
I especially like how you explained how a jack can be modified to operate up side down, I often wondered why, and how. Now, thanks to your video, I totally understand.
Thank You
What a great explanation. Thanks Mr. Pete. I had a very basic understanding of the principle but not the specific way in which it was applied. I've got a cylinder that I overloaded that has been laying around thinking I would try to fix it. With the class on how they are put together and an understanding of the valve system along with how it should come apart I think I'll give it a go...probably more expensive to fix than recycle but I ought to learn something in the process. Thanks again for all the great videos.
Thanks for this. I never took the time to find out what made these work. Makes perfect sense. You are doing good work. Keep it up!
Mr Peterson, awesome video! please, please keep doing the how it works video series. You are an excellent instructor and I always learn from you. You have a superior teaching style. Thank you for bringing your time and experience to you tube. Thanks!
Excellent explanation! Thanks a lot for this and all your other videos!
Until now, I only watched some of them, but I learned a lot by each single video.
Please keep on your great work on youtube!
thanks, mr pete. I've never really thought about how these work but your presentation makes it easy to understand.
Nice hands on explanation of something that everyone uses but maybe very few think about how it works. Its a great teaching aid and i wish they'd done this kind of thing when I was at school to explain theories!
Thank you very much
Is everybody still around? Thank you so much mr.pete! A big hug for your detailed information! Its a big help to know how on things!
👍👍
Great to add these mechanical functions to the mental catalogue of inner workings. Always appreciated.
Thanks for the videos. A lot of the things you show in this series I have a conceptual idea of how they work but have never taken the time or effort to see the detail. I find them interesting, keep them coming
I always learn something from your videos. Now I understand why my bottle jack won't work horizontally, because of those ball check valves. Thanks for doing these.
Mr Pete
Thanks for taking the time to share your knowledge.
Thank you, I have had a 20 ton jack out in my shed for 28 years and thanks to you I have been able to bring it back to life.
👍👍👍
Y'know what? I have been meaning to take a jack apart for years to look at how it works, but could never find the time - other more important priorities intervened - so this has saved me the effort. Thanks.
Thanks for making these videos Mr. Pete. You bring back many years of shop classes. My Dads home and shop was lost in a forest fire last year, I salvaged 3 floor jacks, all of which need rebuilding of course. I've never pulled the ram from a Hydraulic jack before and I wanted to know what type of seals were used, or as I've learned from your videos, cups, like a wheel cylinder. I don't know if it'll be worthwhile to rebuild these jacks, even though they were good US made units, but one of them was my grandfathers 3 or 4 ton Walker Jack, and to me, it's worth rebuilding at almost no matter the cost. I'm sure I'll be able to find o-rings and seals, but I'm not sure where to find cups yet, once I get measurements I'll start with the auto parts store first I suppose. Anyways, thanks again for your video.
Thanks for watching--sorry about the fire
Thanks for sharing your 50 years of knowledge with the rest of us that like to learn. Forget the naysayers, they are just jealous of what you are doing. Great Job an Thanks Again.
Thanks for watching
may i say that was very well explained as always... thankyou sir for sharing...
Resealing a trolley jack I'm after info to show how the ball seal is fitted into the device . It has 2 Bearings for two passages; and a ball end on the pressure lock tap. You came close to solving that except also, this shows me how to fathom it out with some stout monofilament and some soft wire . I can at least go and figure how the darn thing is meant to work.
A problem crops up since somebody beat me at getting inside the works and I cant easily be sure if springs were required in any all or none of the check valves straight away. Thank you for being a good helper, following my viewing of up to 5-6 others that just did not go in the right direction, all the way or not with a similar enough device to be of any use! It was a good idea to subscribe to Mrpete222 but today I had to renew my sub, I also learnt.
Nice vid as always. I "fixed" my hydraulic jack by renewing all the o rings and it never worked properly again! Your distinction of the low pressure side and tube being only a reservoir, are the key understandings for me. Keep up the knowledge transfer, a thankless task.
Mr, Pete, thanks for doing the WHAT MAKES IT WORK series, I enjoy them. Keep it up.
Excellent video. Really enjoyed seeing the guts of the bottle jack. You did an excellent job describing the math behind how it works as well. Loved the Sharpie on brown paper calculations as well. Simple straightforward and clearly presented. Thanks.
Thank you very much
Excellent two part series on jacks. Very informative. Thanks, MrPete!
Thanks
I really appreciate you taking the time to go through how the bottle jacks work. I showed my kids these videos after they try one in my garage (mechanical advantage is fascinating to them both). Thank you!
Thank you Mr Pete for your awesome video. I have a lift cart that has garbage for manual. So I needed to know about the theory and mechanics of hydraulic jacks. Your videos on the subject have been extremely helpful. I loved your explanation of the oil passageways and how the valve system works.
Great video! So clear that you have years of experience in teaching. Thank you for taking the time to share your expertise with the wider audience.
Mr. Pete, 'The man who knows everything, knows nothing'. Keep sharing and we will keep enjoying young man!!!!
Always wondered how a press jack worked upside down. Thank you Mr.Pete.
Thanks Mr. Pete!! I don't recall learning (back in school) about the various classes of levers, so I had to look it up. You are much appreciated.
Thanks for a fine explanation of the workings of a hydraulic jack. I've always been curious what they looked like inside and now I know.
Thanks for sharing Mr Pete! :)
I'd like to clarify a point that Mr Pete made, but might have been lost: the fact that the fluid is incompressible means the *volume of the fluid does not really change under pressure*, and this is 'magic' behind what gives the hydraulic part of the mechanical advantage with the smaller and larger bore sizes.
School mathematics tells us the volume of a cylinder, so we can apply that here to work out some unknown value. In this case, I quickly worked out what I expected the travel of the ram piston to be from one stroke of the master cylinder (pump).
v_pump = v_ram
pi * r_pump^2 * h_pump = pi * r_ram^2 * h_ram
pi * 0.440"^2 * 0.820" = pi * 0.940"^2 * h_ram
divide pi from both sides
0.440"^2 * 0.820" = 0.940"^2 * h_ram
divide 0.940"^2 from both sides:
0.440"^2 * 0.820" / 0.940"^2 = h_ram
h_ram = 0.18"
It's in the ballpark of the 0.16" that Mr Pete measured, so it's possible that maybe the ram bore or the master cylinder bore are differed between the jacks, or that the stroke was slightly different to what Mr Pete was able to measure (or perhaps the paint wear didn't match with the true stroke length).
Keep up the fantastic videos Mr Pete!
There are two items of interest here: 1. the pump. On most of the better quality jacks the pump can be replaced thereby renewing it. My supervisor did it on a tall 20 ton jack. 2. the correct way to turn an adjustable wrench. In most situations that don't require a large torque either way is no problem. If a large force(torque) is applied to the wrench in a backwards direction the movable jaw is forced open instead of the jaw being forced against the part thus slightly opening the jaw and possibly rounding the part if it is a nut. This is easiest to see using a pipe wrench as the movable jaw is much looser than a "Crescent" wrench but in design they are the same. It is a matter of physics and engineering.
I think the explanation is great and right on.
Thanks for that, wonderful to see how jacks work. I watched it with my 9 year old during dinner and it gave me a great opportunity to introduce new physics concepts to him.
It's a very nice explanation. Image, sound and camera management is very good. A complete tutorial and training video. Great. I think I'll be watching these pages often from now on. Thank you for your hands. Respects.
Thank you very much
i love your videos mr pete and all the knowledge you are passing along to others like myself i thank you
Videos are still relevant 6 years later. Watched both 1 and 2, thanks.
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Excellent presentation as always. Thank you.
I already had a good understanding of how jacks work, but it was still very interesting to see it all apart.
Pay no mind to those who lack the mental acuity to appreciate your presentations.
Great video! I enjoy them very much and learn something from each one. You're an excellent teacher. Thanks for taking the time to make them.
I really enjoyed both of these videos. It’s funny how we use these things we don’t understand how they work and that was very helpful.
Great teaching, your video's are very helpful! Thanks, Brendan
Thanks for the video. I had been trying to fix my leaky jack on and off in the last month or so and after changing the o-ring on the pump, it seemed to have gotten worse with no pressure at all. I looked at it again today and either the ball was not seated correctly or I had forgotten to close the screw valve, now it seems to work fine. In the mean time my wife informed me that she already ordered a new one for me. (I wasn't too pleased that many people don't appreciate fixing things which when fixed work as good as a new one). Anyway, I also enjoyed the ratio math. In physics there is a principle of conservation of energy which is defined as force x distance (or more precisely as an integral). So if the force is 5 times greater, then the distance is 5 times smaller. So the energy you put in is the same as what was gained by the car as it got raised by 1/5th the distance. Also, since the handle is about 1 foot and the pump is about 1 inch from the fulcrum, we have another 12x the advantage there for a total of 12x5=~ 60. Thus, you can lift about 1500 lbs, (say the whole front of the car) by applying 1500/60=25 lbs at the handle. I am still not too clear about that ball valve, but I get the gist. There seems to be two one way valves.
Thanks for the math--I'm a little weak on that
Interesting, enjoyable, and certainly thorough addition to the "What Makes it Work" series. Thanks.
Another excellent video. I'm going have my son watch both parts so he can see a practical application of what he has learned in his math and science classes.
Mr. Pete, the age old analogy. You can make some of the people happy some of the time but, you can never make all of the people happy all of the time applies.
Main thing is, are you happy? I personally enjoy all your videos. I put my ear buds in and watch you most every night instead of the depressing news. Keep up the good work, it keeps us young.
Some people just cant be made happy.
Loved this two part series!! Such an amazing breakdown and demonstration!! Thank you for putting so much time and effort into making these videos!
Glad you enjoyed it!
Very informative video. Don't be discouraged by negative comments most of your viewers are thankful for your lessons. Myself included.
great job on demo. i always wondered how those work. keep up the good work. i am sick in bed alot, so your teaching skills and inquisitiveness is awsome. i learned something, thanks.
Cheers, Mr Pete. Great video.
Just put together a surface-rusty but fundamentally sound 1980s vintage engine hoist (made in Redditch; just outside Birmingham, UK) and googled for a manual. Didn’t find one but eh, refilled it with oil; tested and all good👍
Tomorrow afternoon, it will lift my Warco Minor (an early 90's Taiwanese round column mill, imported by the one decent hobbyist-appropriate machine tool seller in the UK) up on to my workbench.
What should come up on my RUclips suggestions tonight but a couple of videos about hydraulic jacks from your ever-interesting, ever-lamenting-the-modern-disposable-world, but ever-virtuous self.
God bless you, sir. 😊
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Best video on hydraulic jacks on you tube. Thanks Pete.
Thanks
I found the need to learn this because I have a few old jacks laying around my shop and decided to do whatever I have to do to put these jacks back into service. As always, I watched your video and learned something. Thank you, sir.
Glad to help
Very Interesting and detailed demonstration. I've always been curious to see how the guts work - Thanks for the video Pete, and your no-nonsense narration ;-)
Thanks for watching
You gave an excellent presentation of how a bottle jack works & functions, for a layman like me this was very informative, thanks for sharing your knowledge.
Great video,it's clear and very easy to understand.God bless you and your family.
I love cutaways! Seems like a 90 bandsaw cut through the middle of the ports and cleanup with an endmill would work well and show most everything.
Great job on the video Sir. I can tell by watching you that you have a very analytical mind. To share knowledge is a true act of reason and principle. Everything is created twice, first in the mind then in reality. You are a force for that to happen. Thank You
Thank you very much
Thank you. I like the detail and your every-man explanation of engineering /physics principles.
Thanks Mr Pete. This introductory 'heads-up' on hydraulic jacks has been excellent info for me. I have a 'stumpy' (shortened length) standard width trolley-jack based on what looks like a bottle jack lying sideways. It has never worked properly as to piston extension range (and so the overall height it jacks to is useless). I have always threatened to throw the thing away... You've re- kindled an interest in me spending 10minutes to check now if it's just a case of lack of oil!!!....
Excellent break down on a hydraulic jack.Was given a 35 ton jack the other day, heavy as a boat anchor, gonna take it apart ,try to rebuild it.
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Thank you for posting this very informative video.
I have never seen one taken apart before, so I have learned something.
THANK YOU.
Thanks for watching