ok bear with me, and stop me if I've messed something up here (very possible)
I am assuming a few things here, because i never got an answer.
1.The angle of force that the vertical load is compared to is the angle of the rigid arm
http://www.woodrell.com/joe/phys/physb-1.jpg
2.The force applied at an angle is the cosine of the angle delta between force and load
http://www.woodrell.com/joe/phys/physb-2.jpg
ok with that let me label the things i am looking at
a = 9 length of rigid arm
b = 6 distance between fixed pivots
c = height of movable pivot at rest above bottom fixed pivot
d = height of top fixed pivot above movable pivot at rest
e = horizontal distance between fixed and movable pivots
f = pi/12 angle of rigid arm at rest
g = angle delta of cylinder to angle of force on rigid arm of the force
http://www.woodrell.com/joe/phys/physb-3.jpg
so with this
c = Sin(f) * a
d = b - c
e = Cos(f) * a
g = pi/2 - arctan( d / e ) - f
so bringing those things together i get
g = pi/2 - (arctan((6 - sin(pi/12) * 9) / (cos(pi/12) * 9))) - pi/12
with that equation for the angle of the cylinder, i want to find how the force changes as the mounting point of the cylinder moves down the rigid arm closer to its fixed pivot, aligning with the angle of force, but moving in on the lever.
this melted my brain for a while, but i collapsed it down to an equation with the length of the rigid arm as x, and scaling with where the pivot is on the am
pi/2 - (arctan((6 - sin(pi/12) * x) / (cos(pi/12) * x))) - pi/12)
http://www.woodrell.com/joe/phys/physb-4.jpg
and the force it would generate at this delta angle
cos(pi/2 - (arctan((6 - sin(pi/12) * x) / (cos(pi/12) * x))) - pi/12))
http://www.woodrell.com/joe/phys/physb-5.jpg
and multiplying that by the proportion of the mounting position on the rigid arm
cos(pi/2 - (arctan((6 - sin(pi/12) * x) / (cos(pi/12) * x))) - pi/12)) * x/9
http://www.woodrell.com/joe/phys/physb-6.jpg
basically what graphing this told me was that the greatest force is achieved when the cylinder attached to the end of the arm even though the cylinder was at more of an oblique angle
the reason for all this thought is just a personal project, that will probably result in nothing more than a thought process, but i at least want to make sure i am getting it right so far
anyway... thanks for your help guys, just trying to understand this stuff better