The short answer is I was wrong. You can skip the next paragraph unless you are just curious about the original setup.

To figure the MA of a pulley system, you actually figure by the number of ropes/legs but some of them can be simply for changing direction so you have to evaluate it. I made a mistake the first time, because I am conditioned to look at pulley systems with the fixed point at the top and the resistance pulling down but movable. Our presses are different with the resistance pushing up and movable but the fixed point is below. I wrongly counted the first and last legs as simply redirection (really stupid; must have been late). To be honest, i looked at it again after I posted the first time and started to post again but then you moved the pulley so I just punted thinking it was a moot point. The way to figure the original setup really involves knowing the angle of the ropes because only a portion of those 3 middle legs are pulling straight down on the end of the arm. So you have to figure the first leg, middle 3 legs, and last leg separately. I didn't do that the first time. I still get numbers slightly larger than your original values (assuming a 45 degree angle) which leads me to believe you have a lot of friction in your system.

The calculation for any simple pulley system really comes down to simply this: All the ropes in a pulley system have the same tension. If they are all pulling in the same direction you simply count the legs. Of course, there are complex systems that are figured differently but your current setup is not one. It has 5 legs and all are exerting a force downward therefore the MA = 5.

Can you see anything in my calcs that would account for an actual of 157 lbs and my calculated 107 lbs?

[/size]

**(5 * (4*4. ) + 11 = 107 lbs** [lbs * (pulley advantage * lever advantage) + lever&ramrod weight]

**3.14 * ((7.375/2)*(7.375/2)) = 42.7 sq in** [pi * mould radius squared]

**107/42.7 = 2.5 psi** [lbs/sq in= psi]

If I am to believe my math, I have 2.5 psi to press my Gouda with.[/size]

I am not sure I understand the first line of this. How much weight is hanging on the end? If it is 10 lbs then I would calculate the predicted force on the scale this way:

5 (pulley MA) x 4.8 (lever MA) x 10 (weight attached) + 11 (lever and piston weight) = 251lbs

If you get a greater value than this, let me know. Sorry so long. Hard to know where to start and end. I hope it is helpful.