Thank you for your knowledge. I’ve just learnt about mechanical advantage so I can use it to pull up an indoor makeshift clothes line. With all the weight of wet clothes I needed to know how many pulleys and the arrangement to make my life easier. Your video taught this mum (54 yrs) the importance of stationary versus movable block . Great job. Never to old to learn.
Excellent presentation on the basics of block and tackle systems and the math behind the mechanical advantage (MA) to determine how much force (F) is required to lift the weight (W). F=W/MA. Thanks Capt. Bob
Thanks, I enjoyed that. I am old, so was taught this at school as part of the "Mechanics" subject. They don't have that now, things are more sophisticated. Good to see that the old ways are not forgotten, they may still be useful in future.
Was waiting to see if 1 to 1 would be clarified as worse than equal force to wait owing to friction introduced at every sheave, the moment the word “theoretical” was introduced. Again, way to go.
If we place them horizontaly one after the other up and down or if we place them vertically one below the other do the two orders have any difference in the lifting power or the lifting power still remains the same ?
Minus friction are the folds directly proportional? In other words a four pulley is weight divided by four. Does that mean 6 pulleys divides the weight by 6?
Great information. But how in the world can you know so much about block and tackle systems yet but NOT know how to pronounce it properly. Oh wait, you actually started saying it correctly @ 2:30. Weird.
Out of curiosity using the same scenario if the rope for instance were rated for only 200Lbs would the total lifting ability be multiplied by the number of ropes ? @800Lbs
Each complete turn (wrap) adds (roughly )double the MBS because of load splitting. If you make a theoretically perfect sling (an endless loop of rope), you have doubled the capacity before it begins to break. Fold the sling over, you doubled it again. So you can think of a block and tackle as an arbitrary number of slings that can be shortened by the inclusion of a half wrap that you can pull on.
Can't find the term "made-off" in any marine dictionary, nor have I ever heard it used in any class or onboard a vessel. The phrase literally means to "run away with," so that is confusing to say the least. Also confusing is your pronunciation of the word "tackle" as "take"le...
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Thank you for your knowledge. I’ve just learnt about mechanical advantage so I can use it to pull up an indoor makeshift clothes line. With all the weight of wet clothes I needed to know how many pulleys and the arrangement to make my life easier. Your video taught this mum (54 yrs) the importance of stationary versus movable block . Great job. Never to old to learn.
Thank you for sharing this with us! we're happy to know that, thank you.
take a sip of beer EVERY time he says "okay?" .. you'll NEVER finish the video okay???
Crazy clear and expert instruction. This is what good teaching looks like. Seamanship!
Excellent presentation on the basics of block and tackle systems and the math behind the mechanical advantage (MA) to determine how much force (F) is required to lift the weight (W). F=W/MA. Thanks Capt. Bob
Thanks, I enjoyed that. I am old, so was taught this at school as part of the "Mechanics" subject. They don't have that now, things are more sophisticated. Good to see that the old ways are not forgotten, they may still be useful in future.
Was waiting to see if 1 to 1 would be clarified as worse than equal force to wait owing to friction introduced at every sheave, the moment the word “theoretical” was introduced. Again, way to go.
Friction important, also importantly tinsil strength and distance from picking point...
Thanks for sharing. PS. Angle's too...
block and TAKELLL ??? wt....
Simple machines! TY Captain Glover.
Great explanation, thank you!
Great video you are a verry good mentor easy to undrestand
So, adding another pulley to each block would divide the weight by 6?
Wisdom in those greys
What the hell is a "takel"????
It’s the change you get from a shekel
Thanks now I understand really helped
Thanks, Bob.
If we place them horizontaly one after the other up and down or if we place them vertically one below the other do the two orders have any difference in the lifting power or the lifting power still remains the same ?
what if there are three wheels sideways with the center wheel higher and and one rope? (--o--0--o---)
Minus friction are the folds directly proportional? In other words a four pulley is weight divided by four. Does that mean 6 pulleys divides the weight by 6?
Great information. But how in the world can you know so much about block and tackle systems yet but NOT know how to pronounce it properly.
Oh wait, you actually started saying it correctly @ 2:30. Weird.
Wood 'n' Stuff w/ Steve French the old timers in the south where I was raised said tickle
Out of curiosity using the same scenario if the rope for instance were rated for only 200Lbs would the total lifting ability be multiplied by the number of ropes ? @800Lbs
Each complete turn (wrap) adds (roughly )double the MBS because of load splitting. If you make a theoretically perfect sling (an endless loop of rope), you have doubled the capacity before it begins to break. Fold the sling over, you doubled it again. So you can think of a block and tackle as an arbitrary number of slings that can be shortened by the inclusion of a half wrap that you can pull on.
Nice. But how is pounds a unit of force?
I thought the same thing. He should've clarified Force as either Joules or Newton meters or pound feet of torque.
Can't find the term "made-off" in any marine dictionary, nor have I ever heard it used in any class or onboard a vessel. The phrase literally means to "run away with," so that is confusing to say the least. Also confusing is your pronunciation of the word "tackle" as "take"le...
No idea how I got here, but I'm not mad about it
exceptional
all that takel talk made me tinkle in my pynts
Whats a tayckle
why don't you take into consideration the weight of the moveable block?
Thank you sir your explanation I realy àpriceàted
How about different size pulleys?
It would be the same because every segment of the string pull uniform tensions to the weight. Just keep every string close to the vertical line
2:46 just look youll figure it out
Hi
I'm An Arab.