Double Acting Cylinder / Pump

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  • เผยแพร่เมื่อ 29 ม.ค. 2025

ความคิดเห็น • 318

  • @joelgrayson2
    @joelgrayson2 2 ปีที่แล้ว +10

    This 3D explanation makes the double-acting cylinder so much easier to understand. Thank you!

    • @EngineOn
      @EngineOn  9 หลายเดือนก่อน

      Thank you

  • @mattrittman
    @mattrittman 4 ปีที่แล้ว +78

    Love your animations! Very clean and easy to understand! Keep up the fantastic work :)

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว +1

      Thank you so much.. 👍

    • @robertweekley5926
      @robertweekley5926 3 ปีที่แล้ว +1

      @@EngineOn Are these just for Educational Purposes, or do you intend to Build Physical Models, as well?
      If yes (You are going to Build Working Models), are the Design Files Available for replication via a 3D Printing or Machine Shop?

    • @EngineOn
      @EngineOn  3 ปีที่แล้ว

      @Robert sir this is only concept based design, educational purposes but you can build physical models using concept.
      Thanks.

    • @casonlionel7121
      @casonlionel7121 3 ปีที่แล้ว

      i dont mean to be so offtopic but does someone know of a trick to get back into an Instagram account??
      I stupidly forgot my account password. I appreciate any help you can offer me

    • @desmondfox4602
      @desmondfox4602 3 ปีที่แล้ว

      @Cason Lionel instablaster :)

  • @jasonbenny5118
    @jasonbenny5118 6 หลายเดือนก่อน

    i never though i would appreciate myself for the subscription a year ago, in love with the information presented

  • @951ddi
    @951ddi 3 ปีที่แล้ว +1

    The best animition ever , hoping this can be moved to be explained in classes

    • @EngineOn
      @EngineOn  3 ปีที่แล้ว

      Thank you sir..

  • @naufalfajran6468
    @naufalfajran6468 4 ปีที่แล้ว +4

    Fantastic
    Im a mechanical student, and in this semester i learn on pneumatic and hydraulic.
    This video really help me to understand the mechanism of the cylinder movement.
    Much appreciated, thank you

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว +1

      Glad it helped!

  • @pratik9573
    @pratik9573 4 ปีที่แล้ว +4

    Nice presentation

  • @mlnddalvi26
    @mlnddalvi26 4 ปีที่แล้ว +12

    Great video!! i would like to thank you for the efforts you have made and hoping the same best work from in the future as well.

    • @EngineOn
      @EngineOn  9 หลายเดือนก่อน

      Thank you

  • @hello-ki2pd
    @hello-ki2pd 4 ปีที่แล้ว +3

    Excellent presentation 👍

  • @ravjichikhalvale3364
    @ravjichikhalvale3364 4 ปีที่แล้ว +1

    Wahh kya bat hai.vey simplified presentation great 👌🏼👍🏽

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      Thanks bro

  • @sourabhpatil003
    @sourabhpatil003 4 ปีที่แล้ว +3

    Great wrk shrikant rao..keep it up👌🏻👌🏻👍🏻

  • @LaeeqKhan01
    @LaeeqKhan01 4 ปีที่แล้ว +1

    Very nice. Good old technology.

  • @EnraEnerato
    @EnraEnerato 4 ปีที่แล้ว +10

    I just imagined having to calculate a couple of those in parallel with a phase shift applied to them in the hydraulic exams at my UAS, luckily this was not done but the preasure spikes and phase shift would make that task into a nice bonus points head scratcher, especially under a time limit and exam stress. Not to mention all the technical questions one could ask around that setup.

    • @AnkleBiter3854
      @AnkleBiter3854 4 ปีที่แล้ว

      With all those terms, i thought you were talking ham radio stuff, don't know why

    • @DieselRamcharger
      @DieselRamcharger 4 ปีที่แล้ว

      @@AnkleBiter3854 hes trying to sound smarter than he is. another half wit terrible engineer with no hands on experience at anything.

    • @AnkleBiter3854
      @AnkleBiter3854 4 ปีที่แล้ว +1

      Oh, well thank you for helping me with understanding, or we're both wrong and he's being just being funny, who knows

    • @youghurt2k
      @youghurt2k 4 ปีที่แล้ว +1

      @@AnkleBiter3854 I work in a factory where we make large double acting piston pumps with two cylinders. Pressure is up to 120 meters and flow 300+ cubic meters or hour. They are made with a crankshaft mounted through a large gear wheel, with a piston on each side of the gear wheel. If the two pistons work completely opposite of each other ( one going up and the other going down simultaneously), the shift in pressure when the pistons change direction, will make a lot of noise and shake the tubes violently. So the crankshaft is made so the pistons has a 90 degree difference instead of 180 degrees. I guess that is what he is trying to be technically about.

    • @AnkleBiter3854
      @AnkleBiter3854 4 ปีที่แล้ว

      @@youghurt2k how is this different compared to any other engine? Does this make it more efficient in fuel? Is it better in the way that it is much faster than a regular engine with the same amount of pistons? Also, that's really freaking cool, my dad used to work in a foundry that made parts for V8 engines

  • @ProyectosSteam
    @ProyectosSteam 4 ปีที่แล้ว +2

    Espectacular..... solo faltaría el modelo impreso en 3d ... felicidades , asombroso

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      Thank you

  • @ambikagawali4990
    @ambikagawali4990 4 ปีที่แล้ว +3

    Great work 👍

  • @relardztv605
    @relardztv605 2 ปีที่แล้ว +1

    Very effective super amizing good job because of your vlog tutorial I got some knowledge from you about that your vlog

  • @evanherriges4042
    @evanherriges4042 4 ปีที่แล้ว +24

    The animation is so good

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      Thank you 🙂

    • @shahnazshopna7700
      @shahnazshopna7700 4 ปีที่แล้ว

    • @psd4942
      @psd4942 4 ปีที่แล้ว

      @@shahnazshopna7700 how you made this symbol

  • @BrOverShield
    @BrOverShield 3 ปีที่แล้ว +1

    Animation is amazing. Thank you so much!

    • @EngineOn
      @EngineOn  3 ปีที่แล้ว

      Glad you like it!

  • @Chinmay0602
    @Chinmay0602 4 ปีที่แล้ว +2

    Great work 🙌👍

  • @HDVstudioBAIHER
    @HDVstudioBAIHER 3 ปีที่แล้ว

    bhut hi saral or sunder animation

  • @nasirshaikh6736
    @nasirshaikh6736 4 ปีที่แล้ว +1

    Mast Ch Dada...👍👍👌👌👌

  • @ralphralpherson9441
    @ralphralpherson9441 ปีที่แล้ว +2

    Well... the English translations need a lot of help, but the visuals and graphics are amazing! Very well done!

    • @EngineOn
      @EngineOn  ปีที่แล้ว +1

      Thank you sir. 👍🏻

  • @sidharth4486
    @sidharth4486 4 ปีที่แล้ว +1

    Excellent work and detailing, keep it up.

  • @zahir2025-c9w
    @zahir2025-c9w 3 ปีที่แล้ว +1

    nice pump

  • @SAGAR-cf1oh
    @SAGAR-cf1oh 4 ปีที่แล้ว +2

    it's really amazing video... useful 👍

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      Thank you sagar... Can you give me some ideas for new animations.

  • @WildZubii
    @WildZubii 4 ปีที่แล้ว +1

    Nice work sir..

  • @МихаилТронин-х6х
    @МихаилТронин-х6х 4 ปีที่แล้ว +3

    О да, рекомендации точно знают, что мне надо!

    • @DenysShust
      @DenysShust 4 ปีที่แล้ว

      В точку

  • @eojkivalcav6679
    @eojkivalcav6679 4 ปีที่แล้ว +4

    Beautiful animations and simplified illustrations, keep up the good work.

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      Thank you so much.. 🙂

  • @sachinraut1213
    @sachinraut1213 ปีที่แล้ว

    Great animation

  • @XOXOlIlIlIlIlI
    @XOXOlIlIlIlIlI ปีที่แล้ว +1

    I love your animation video❤

  • @kuldippawar3379
    @kuldippawar3379 4 ปีที่แล้ว +1

    Nice work 👍✨

  • @andreyrumming6842
    @andreyrumming6842 4 ปีที่แล้ว +33

    Fun fact, in electronics terms, this is called a bridge rectifier.

    • @gooddealonly
      @gooddealonly 4 ปีที่แล้ว +1

      The AC power a SOURCE that supplies a continuous reversing polarity current. The bridge rectifier "redirects" each direction of the polarity to the same output of either positive or negative. The bridge rectifier redirects and does not move the current The pump is working with a static pool of liquid. There is no flowing of the liquid and therefore no direction change to rectify anything. The cranking mechanism, however, changes the rotating motion to a reciprocal linear motion of the piston. The liquid was moved by being sucked into the cylinder by the linear motion of the piston-like plate. The double-action makes the pumping more efficient. The comparison to the bridge rectifier with this double action pump is NOT similar.

    • @robertfleischmann4119
      @robertfleischmann4119 4 ปีที่แล้ว +1

      @@gooddealonly - It's in the same ballpark. Maybe just reverse concept.

    • @amirerlangga949
      @amirerlangga949 4 ปีที่แล้ว +3

      Diode = Check Valve, I think this is an accurate analogy

    • @daltonbrink9924
      @daltonbrink9924 4 ปีที่แล้ว

      *rectum-fryer

    • @ColinRichardson
      @ColinRichardson 4 ปีที่แล้ว

      Was thinking the exact same thing

  • @sahabatwaktu5334
    @sahabatwaktu5334 4 ปีที่แล้ว +1

    very good idea...
    👍

  • @SRsatron
    @SRsatron 4 ปีที่แล้ว +2

    Nice 👌

  • @teukudjw7737
    @teukudjw7737 4 ปีที่แล้ว +1

    The idea is great, cool animation btw. Thx

  • @michaelzajac5284
    @michaelzajac5284 4 ปีที่แล้ว +2

    I will write it down my inventor notebook.

  • @joelsamuelvnadar9235
    @joelsamuelvnadar9235 4 ปีที่แล้ว +1

    Thanks for your hard working i hope you reach 100k subs

  • @obviouslytwo4u
    @obviouslytwo4u 4 ปีที่แล้ว +19

    This is how your heart works. Same principal.

    • @ccreutzig
      @ccreutzig 4 ปีที่แล้ว +7

      Your heart is not using a sliding piston, and the pumping movements are synchronised differently. Different principle (sp!).

    • @pixelmace1423
      @pixelmace1423 4 ปีที่แล้ว +3

      I guess the valve thing checks out

    • @julienmauguin3214
      @julienmauguin3214 4 ปีที่แล้ว +1

      Yeah, fair enough

    • @obviouslytwo4u
      @obviouslytwo4u 4 ปีที่แล้ว +1

      @@ccreutzig Don't be so plain.

    • @Rick-the-Swift
      @Rick-the-Swift 4 ปีที่แล้ว +1

      @@pixelmace1423 I just checked the valve on mine, and I didn't see any sign of a hinge or pin

  • @nelj3376
    @nelj3376 2 ปีที่แล้ว +1

    Welcome to 100N Sub! ❤✋👍

  • @samusam5853
    @samusam5853 4 ปีที่แล้ว +1

    Great work dude
    Subscribed your channel

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      Thanks for the sub!

    • @samusam5853
      @samusam5853 4 ปีที่แล้ว +1

      @@EngineOn 😊

  • @zaildarkuldeep8451
    @zaildarkuldeep8451 3 ปีที่แล้ว +1

    Very nice good job. Honestly, i have been thinking a few days that air can be used in this way. Please send me a practical video related to this. Thank you very much.

  • @satishbalodi4576
    @satishbalodi4576 4 ปีที่แล้ว +1

    Excellent 👌👌👌

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      Thanks a lot

  • @DrawdeThePotato
    @DrawdeThePotato 4 ปีที่แล้ว +1

    Great video... would work great with a ram pump.

  • @LocalScenery
    @LocalScenery 4 ปีที่แล้ว +4

    Excellent!

  • @truongthuyluc7697
    @truongthuyluc7697 4 ปีที่แล้ว +1

    Very good

  • @Punjabi-studio999
    @Punjabi-studio999 4 ปีที่แล้ว +1

    Very very very good idea 🚂🚂🚂

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      Many many thanks

  • @whyldthing86
    @whyldthing86 4 ปีที่แล้ว +8

    I think a spring type check valve would be a better option to use here.

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว +6

      Yes you are right... It's is just concept animation... You can use advance valve or spring valve... Advance designed check valve work accurately... Thank you

    • @xenuno
      @xenuno 4 ปีที่แล้ว

      If you mean a sprung piston-ball-disc check what you gain in backflow and water hammer prevention plus omni positional installs you lose in pressure drop thus flow rate vs a swing check for two equally line sized valves. I've seen swing checks with and without return springs. Don't play the video upside down with the current checks. Spring loaded swings might still work though ..

    • @Froggability
      @Froggability 2 ปีที่แล้ว

      I suggest springs make it worse, reduce the flow, and another part to corrode or fail over time. Back pressure alone does the job

  • @douglaspt2476
    @douglaspt2476 3 ปีที่แล้ว +1

    👍Parabéns pelo projeto/animação.

  • @lalringfelifelfeli4936
    @lalringfelifelfeli4936 2 ปีที่แล้ว

    Great tutorial i ever see!!

  • @rahulmp4769
    @rahulmp4769 2 ปีที่แล้ว

    Great explanation 😍

  • @highseeker0
    @highseeker0 4 ปีที่แล้ว +1

    Very simple but Great

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      Thank you

  • @chamindadilhan3899
    @chamindadilhan3899 4 ปีที่แล้ว +1

    Good job ,

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว +1

      Thanks

  • @DannyDoThings
    @DannyDoThings 4 ปีที่แล้ว +4

    Im glad that i found this and im gonna giv a sub

  • @johnytan5379
    @johnytan5379 3 ปีที่แล้ว +1

    Great idea!

    • @EngineOn
      @EngineOn  3 ปีที่แล้ว

      Thank you.

  • @onlycomedy4641
    @onlycomedy4641 4 ปีที่แล้ว +1

    Nice 🔥👌👍

  • @bluepheonixgaming1543
    @bluepheonixgaming1543 2 ปีที่แล้ว +1

    Great job👍
    How high can this pump suck water??
    Can it suck from 30 ft above??

  • @Muhammad.Santana212
    @Muhammad.Santana212 ปีที่แล้ว

    Sangat bagus di mixing dengan kincir angin

  • @A_Frog_from_mars12
    @A_Frog_from_mars12 2 ปีที่แล้ว

    The only problem with this design would be sealing and lubrication. Like if you were to use a mechanical seal or packing on the reciprocating shaft, it would have to be replaced constantly, and would leak pretty easily. Also, oil from the crank would drip onto the piston shaft and likely make its way past the seal, contaminating the water being pumped. or water seeping past the seals would contaminate the oil. Also what's protecting the cylinder and the seals from hydraulic lock? If the outlet check valve fails on the down stroke, or some water gets trapped under the piston. Water being a non compressible fluid will either try and find it's way out by any means (often explosively), or provide so much resistance that it destroys the driver turning the crank.

  • @shriramkanawade9247
    @shriramkanawade9247 4 ปีที่แล้ว +1

    Very educational video..nice

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว +1

      Glad you liked it, you are the 1st one .

    • @shriramkanawade9247
      @shriramkanawade9247 4 ปีที่แล้ว +1

      @@EngineOn I am always waiting for your videos

  • @GOHhar
    @GOHhar 4 ปีที่แล้ว +1

    Good idea

  • @AKLINTMURT
    @AKLINTMURT 4 ปีที่แล้ว +1

    Great vidéo !! thank you very much !

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      Thank you

  • @satiyom.t.3847
    @satiyom.t.3847 4 ปีที่แล้ว +1

    It is very very good idea...

  • @hienluongthiminh3518
    @hienluongthiminh3518 3 ปีที่แล้ว +1

    Good idea , thanks you

    • @EngineOn
      @EngineOn  3 ปีที่แล้ว

      You are welcome

  • @walmicesar1
    @walmicesar1 4 ปีที่แล้ว +1

    Gostei muito da bomba. Parabéns!!!

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      obrigado

    • @hernandochavez2521
      @hernandochavez2521 2 ปีที่แล้ว

      @@EngineOn cuál sería la máxima profundidad que succionaria el agua y a qué altura la podría subir?

  • @vardhamansanghavi4930
    @vardhamansanghavi4930 4 ปีที่แล้ว +1

    Nice video

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      Thank you vardhaman..

  • @vasniwestby3988
    @vasniwestby3988 2 ปีที่แล้ว +1

    Can this work for 50ft well? Nice video!!!

  • @thanachotchanthakhoirpc7982
    @thanachotchanthakhoirpc7982 3 ปีที่แล้ว +1

    Flowrate constant ?

  • @raizulislam6066
    @raizulislam6066 3 ปีที่แล้ว +1

    Love you sir

  • @mysterion5312
    @mysterion5312 ปีที่แล้ว +1

    What application you used to make this video illustration?. Thanks

  • @MrWookie21
    @MrWookie21 2 ปีที่แล้ว

    Does this pump need priming to start working ?

  • @CreativeHRM
    @CreativeHRM 4 ปีที่แล้ว +1

    Nice

  • @traderpradhan
    @traderpradhan 4 ปีที่แล้ว +1

    Bro fantastic hai kis application se banate ho bhi batawo n bhi
    TB Mai Apne dosto SE bhi subscribe Karwa dunga pakka

  • @kurniawanekosaputro1318
    @kurniawanekosaputro1318 3 ปีที่แล้ว +1

    So educated👌

    • @EngineOn
      @EngineOn  3 ปีที่แล้ว

      Thank you

  • @YourAverageMODude145
    @YourAverageMODude145 3 ปีที่แล้ว +1

    When this is used for pumping water unlike other water pumps hand pumps, this would have a better constant flow of water.

  • @gerioSB
    @gerioSB 4 ปีที่แล้ว +1

    absolute sine wave for pump

  • @charimuvilla8693
    @charimuvilla8693 4 ปีที่แล้ว +8

    Hmm so is this double one more efficient than a single one?

    • @alexeikolokolcev3232
      @alexeikolokolcev3232 4 ปีที่แล้ว +9

      In part of speed - yes. In part of energy consumption per liter - no.

    • @fakedoorsfordinner1677
      @fakedoorsfordinner1677 4 ปีที่แล้ว

      But is two 'one' faster than one 'two'?(?)

    • @save_theworld
      @save_theworld 4 ปีที่แล้ว +1

      What's the difference between double and single?

  • @Allinone-iz8uq
    @Allinone-iz8uq ปีที่แล้ว +1

    From how many depth it can take out the water?

    • @EngineOn
      @EngineOn  ปีที่แล้ว +2

      250 feet

    • @Allinone-iz8uq
      @Allinone-iz8uq ปีที่แล้ว

      This system should be under water or surface of the ground?

  • @mikecu2249
    @mikecu2249 2 ปีที่แล้ว

    How do you Lubrictae the moving parts during work?

  • @ashwameghgawali2927
    @ashwameghgawali2927 4 ปีที่แล้ว +1

    Mast👌

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      Thanks bro

  • @mdtalhaansari1096
    @mdtalhaansari1096 4 ปีที่แล้ว +2

    Thanks

  • @بهاءرجب-ب8ي
    @بهاءرجب-ب8ي ปีที่แล้ว +1

    what is the software using for animation ?
    it's very cool

    • @EngineOn
      @EngineOn  ปีที่แล้ว +1

      3dsmax and blender

  • @mahuba2553
    @mahuba2553 4 ปีที่แล้ว +5

    youtube: hey wanna see a water pump
    me: ok

    • @zebrin
      @zebrin 4 ปีที่แล้ว

      Yup, same here. TH-cam algorithm strikes again.

  • @Wasim-zx9yn
    @Wasim-zx9yn ปีที่แล้ว

    Which softwar uaed fo 3d animation

  • @rahulnishadnishad3230
    @rahulnishadnishad3230 3 ปีที่แล้ว +1

    वेरी वेरी वेरी वेरी वेरी नाइस

    • @EngineOn
      @EngineOn  3 ปีที่แล้ว

      Thank you Rahul sir to encourage me.

  • @douglasalonso2440
    @douglasalonso2440 3 ปีที่แล้ว

    Es muy práctica
    Saludos 🇲🇽

  • @upendrasingh2096
    @upendrasingh2096 ปีที่แล้ว

    Which software are used for create this animation video?

  • @jigneshmali92
    @jigneshmali92 3 ปีที่แล้ว

    Which software are you using to make such beautifull videos..

  • @nasmboyd1573
    @nasmboyd1573 4 ปีที่แล้ว +2

    awesome work. superb animations
    do you by any chance have a solid works module for this

  • @SwarajThombre
    @SwarajThombre 4 ปีที่แล้ว +3

    Very good animation this new one I like it every one seen this I also wanted to learn from you can you teach me Shreya.

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      Yes, definitely I will tech you animation, now just focus on your study..... Best luck..
      Thank you..

  • @professional.bucket
    @professional.bucket ปีที่แล้ว

    Is there a specific name for that kind of cylinder used?

  • @codigosmontoya6181
    @codigosmontoya6181 4 ปีที่แล้ว +1

    Saludos de JOACIN MONTOYA inventor de escritura global y codigos Montoya.... .. ...

  • @Amipotsophspond
    @Amipotsophspond 4 ปีที่แล้ว +5

    this is also how a blast furnace worked in medieval Europe

  • @psd4942
    @psd4942 4 ปีที่แล้ว +4

    Your animations are wonderful!!!!!!
    I am shocked , I understood everything.
    ❤️Which software you use to make these videos 😁👍

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว

      3dsmax and blender

    • @psd4942
      @psd4942 4 ปีที่แล้ว +2

      @@EngineOn I also know blender!
      I am expert in it but I left it because of time it takes to render animation.....
      It took me around 5 days to render a 10 min. Animation❤️❤️❤️

    • @samusam5853
      @samusam5853 4 ปีที่แล้ว +1

      @@psd4942 rendering depends on your hardware...
      What are your specs?

    • @psd4942
      @psd4942 4 ปีที่แล้ว +1

      @@samusam5853 bro what do you mean by specs...
      Also do you also know blender

    • @samusam5853
      @samusam5853 4 ปีที่แล้ว +1

      @@psd4942 Your pc's specifications...

  • @sankarmg3783
    @sankarmg3783 4 ปีที่แล้ว +1

    Which software using? Software name

  • @Ravi_Sachchade
    @Ravi_Sachchade 4 ปีที่แล้ว +1

    Superb animation sir.... Which software do you use to create this animation?

    • @EngineOn
      @EngineOn  4 ปีที่แล้ว +1

      3ds max and blender

    • @Ravi_Sachchade
      @Ravi_Sachchade 4 ปีที่แล้ว

      @@EngineOn Ok thank you... Keep making nice videos

  • @syedahmed877
    @syedahmed877 4 ปีที่แล้ว +1

    Good

  • @nandbhanwarsinghkanawat9221
    @nandbhanwarsinghkanawat9221 3 ปีที่แล้ว

    If I use this to pull up the water from a tube well, will it require less force compared to a conventional Hand Pump (two one wat valve system)? Is it better than that in any form?

  • @mercysky1421
    @mercysky1421 9 หลายเดือนก่อน +1

    working forever without eclectricity on highland hills 🎉🎉🎉🎉

  • @Greece-DIY
    @Greece-DIY 4 ปีที่แล้ว +1

    genius machine

  • @pulsefel9210
    @pulsefel9210 4 ปีที่แล้ว +4

    its a mechanical heart

  • @villageagrikrishna386
    @villageagrikrishna386 4 ปีที่แล้ว +1

    good jop idea