On Sun, 16 Jan 2011 19:16:03 -0600, dpb wrote:

RBM wrote:
...

I had a small compact Ford tractor. The cylinders on the loader were
considerably smaller that this, which has a 3.5" diameter. Mine could only
pick up about 600 pounds. You also have to keep in mind that your cylinders
aren't only picking up the hay bale, they're also picking up the weight of
the bucket and arms of the loader.

They're also not pointing vertically directly below the load, either;
only the force in the direction of lift is actually vertical.
Not true. Not at all. You need to study your basic physics - simple
levers, classes and ratios.