Dear Jim, i have started learning hydraulics through your videos as i find it easier and detailed compared to other channels.Thanks a lot for uploading.
Dear Sir I can not describe how joyfull i am to find your channel. You are teaching the topics that i want to learn once. I am certain that i am going to watch and participate every single lesson of yours. thank you
Glad you're making use of this material. Make sure to check out the study guides I've compiled for several of these courses: openoregon.pressbooks.pub/electronics1/ openoregon.pressbooks.pub/electronics2/ openoregon.pressbooks.pub/electronics3/ openoregon.pressbooks.pub/hydraulics/
@@bigbadtech sir, i appreciate for your reply. i will definitely check out the resources you recommend. i hope i will complete every single video in your channel untill the summer ends. Greetings from Turkey
Very nice! Glad you're making use of these resources. Please tell your fellow students about these resources. Also check out the free study guides associated with these lectures at: openoregon.pressbooks.pub/hydraulics/
Hi Jim I must say I enjoyed your lecture on check valve. I would like to ask a question . When oil is subject to change in viscosity I am I correct in the understand- the the amount the ball poppet valve is moved of its seating is directly proportional the the chang in viscosity? in other word the thinner the oil the less the ball moves and the thicker the oil the more the ball is displaced therefor maintaining the upstream pressure? Regards Rob
Interesting question to which I honestly don't have an answer. Someone with a fluid dynamics background might have to step in here. There's arguments both for and against. Example a thicker fluid (ie: higher viscosity) might push the poppet off easier however a thinner fluid might flow around the poppet easier. I'm certain one could find some manufacturer that offers a flow rate/pressure drop as a function of viscosity chart.
Hi Jim. Good, clear lectures. Thanks for putting this out there. One thing puzzles me about the pilot operated check valve. Your diagrams seem to indicate that when fully opened, there is no pressure from the output port to lift the poppet. Which seems to mean that only when the pilot pressure goes below the bias can the poppet start to move to close. Quickly enough, the pressure from the output port will contribute to lift the poppet and shut the valve. Am I missing something? I was assuming that the valve shuts when pressure on the output is greater than the pilot pressure. Best wishes, whether you find time to answer or not. /Claude
Jim, will there be a reduction of speed flow in the flow control valve with check valve bypass system due to the flow passing through the small hole? Wasn't better a check valve blocking the flow in the flow control valve line and diverting flow to bypass line?
Can you explain the benefit of by passing a flow control valve with Check valve ? I am finding it little difficulty in getting the exact explanation. If you can explain it in a more simple way, it will help me a lot.
+Mech E Check out the flow control valves lecture: ua-cam.com/video/Tn3bsiQx1Ug/v-deo.html and the flow control methods lecture: ua-cam.com/video/VFtRNAu3_wg/v-deo.html
Mr Pytel thanks a lot for your great lectures i admire that you put them free on you tube it is a great help
Dear Jim, i have started learning hydraulics through your videos as i find it easier and detailed compared to other channels.Thanks a lot for uploading.
Dear Sir
I can not describe how joyfull i am to find your channel. You are teaching the topics that i want to learn once.
I am certain that i am going to watch and participate every single lesson of yours.
thank you
Glad you're making use of this material. Make sure to check out the study guides I've compiled for several of these courses:
openoregon.pressbooks.pub/electronics1/
openoregon.pressbooks.pub/electronics2/
openoregon.pressbooks.pub/electronics3/
openoregon.pressbooks.pub/hydraulics/
@@bigbadtech sir, i appreciate for your reply.
i will definitely check out the resources you recommend.
i hope i will complete every single video in your channel untill the summer ends.
Greetings from Turkey
Nice to watch onceor twice ...., then Nice to be able to listen ten more times while doing other things.
Thanks Jim. Great job. Imagine how well life will go if you know what you are doing.
Best lectures ....
I HATE MY PROFESSOR. YOU SAVED MY LIFE!!
Very nice! Glad you're making use of these resources. Please tell your fellow students about these resources. Also check out the free study guides associated with these lectures at:
openoregon.pressbooks.pub/hydraulics/
Thank you very much! that's what im looking for.
thank you!
Hi Jim I must say I enjoyed your lecture on check valve. I would like to ask a question . When oil is subject to change in viscosity I am I correct in the understand- the the amount the ball poppet valve is moved of its seating is directly proportional the the chang in viscosity? in other word the thinner the oil the less the ball moves and the thicker the oil the more the ball is displaced therefor maintaining the upstream pressure? Regards Rob
Interesting question to which I honestly don't have an answer. Someone with a fluid dynamics background might have to step in here. There's arguments both for and against. Example a thicker fluid (ie: higher viscosity) might push the poppet off easier however a thinner fluid might flow around the poppet easier. I'm certain one could find some manufacturer that offers a flow rate/pressure drop as a function of viscosity chart.
Hi Jim. Good, clear lectures. Thanks for putting this out there.
One thing puzzles me about the pilot operated check valve. Your diagrams seem to indicate that when fully opened, there is no pressure from the output port to lift the poppet. Which seems to mean that only when the pilot pressure goes below the bias can the poppet start to move to close. Quickly enough, the pressure from the output port will contribute to lift the poppet and shut the valve.
Am I missing something? I was assuming that the valve shuts when pressure on the output is greater than the pilot pressure.
Best wishes, whether you find time to answer or not.
/Claude
Jim, will there be a reduction of speed flow in the flow control valve with check valve bypass system due to the flow passing through the small hole? Wasn't better a check valve blocking the flow in the flow control valve line and diverting flow to bypass line?
Yes, check out the flow control valves lecture at: ua-cam.com/video/Tn3bsiQx1Ug/v-deo.html
love you man. great learning.
can you tell which software you are using to teach.
Glad you're making use of this material. Graphics drawn in MS OneNote. Lecture recorded and illustrated using Camtasia.
Jim, does a hydraulic system when in totally static have empty pipes or hose? Or all the system is fully with oil?
Ideally full, a mix of air and oil would exhibit undesirable compressibility
Oh this should be interesting , check yourselve before you wreck yourself why is ice cube in the thumbnail for this video lol .
Can you explain the benefit of by passing a flow control valve with Check valve ? I am finding it little difficulty in getting the exact explanation. If you can explain it in a more simple way, it will help me a lot.
+Mech E Check out the flow control valves lecture: ua-cam.com/video/Tn3bsiQx1Ug/v-deo.html and the flow control methods lecture: ua-cam.com/video/VFtRNAu3_wg/v-deo.html
These lectures gotta be AI-generated or something! i swear
main( ) {
printf("I am not AI.");
}