Thread: Will they ever learn?

Originally Posted by trout1105

That vid explained the principle with absolute clarity, Thanks for posting it because I am now better informed
As far as people being "Thick" I propose that these amongst us that refuse to accept that something that we consider as a Fact is not correct and learn from someone else that has proven otherwise is indeed the "Thick" people.

Have a look at Hand VS electric winch Solo traveling thead from the search panel bottom of page 2nd drawing Runner 2-1 MA

Can we agree that one of these, A,B,C,or D closely resembles the situation where a pulley is attached to an anchor and one end of the cable is wrapped around the winch drum and the other is attached to a point on the same vehicle as the one with the winch?
If so, which one would you nominate?
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Make it easier to understand fella's...

Tie pulley block to rafter in shed...(make sure its a strong beam)

One person holds a rope one side, another hold rope other side... now try and pull other person off ground, heaviest person wins.... no extra power from using block...

Trout, knows this one as I too... We have done our own kills and you use a single pulley block some times on sheep/goats etc for lift... on bigger stuff, either loader/tractor or blocks in combo...


PS Who said "If you have enough rope and pulleys you could move the moon"??

Originally Posted by johntins

The simples vid I posted shows it clearly. The newtons required to lift the block are exactly the same on a straight lift as they are when the line is passed over a fixed pulley. It's all there to see for those who care to look.

That is true, however, it is irrelevant because that fixed pulley scenario is not the same as the one where the line goes from the winch, around the pulley and is then reattached to the vehicle.

Originally Posted by Wraithe

Make it easier to understand fella's...

Tie pulley block to rafter in shed...(make sure its a strong beam)

One person holds a rope one side, another hold rope other side... now try and pull other person off ground, heaviest person wins.... no extra power from using block...

Trout, knows this one as I too... We have done our own kills and you use a single pulley block some times on sheep/goats etc for lift... on bigger stuff, either loader/tractor or blocks in combo...


PS Who said "If you have enough rope and pulleys you could move the moon"??

What you have described is not the same arrangement that you have if the rope goes around the pulley and back to the same object or person doing the pulling.

That is not the same arrangement as winching a vehicle with a snatch block.

Back in your shed, use a pulley tied to the rafter to reduce friction. Stand in a loop in one end of the rope and pull on the other end, Your arms only need a bit more than half your weigh to lift yourself off the ground.

That is the same as a vehicle winching itself.

Trout, knows this one as I too... We have done our own kills and you use a single pulley block some times on sheep/goats etc for lift... on bigger stuff, either loader/tractor or blocks in combo...

An easy fix is to use one of them winches you find on boat trailers, It makes the job of lifting a carcass soo much easier.
I just wielded one onto one of the shed posts and ran the cable through a pulley back down to the floor

Try this From your winch run cable to a block at your clothes hoist and back to your R Point On that leg put tape 2m towards vehicle from pulley on the rope .Then walk back to your winch put some tape 2m out from your winch Now winch that 2m in go back to the other mark and measure how far from the pulley.If its not aprox 1m you cant read a tape measure or have pulled the clothes hoist outa the ground report back!

AM

Originally Posted by vnx205

That is true, however, it is irrelevant because that fixed pulley scenario is not the same as the one where the line goes from the winch, around the pulley and is then reattached to the vehicle.

Not irrelevant at all. It is precisely the point. The argument has been put that a single, fixed pulley can provide MA, which it demonstrably cannot, or that a moving pulley does NOT give MA, when it demonstrably does. The video of the winch to fixed pulley and back to the car even SAYS that there is no MA.