[Mathew]

Well lets see all this stuff in action...

Ok lets say the left arm is 30 degrees from low point - we are using Horizontal Hinge action, and the plane angle is 30 degrees

ok so then we can input this into our equation

30 divided by 90 is 0.3333... or 1/3 of 30 so that is 10 degrees accumulator 3 has turned from vertically going through the inclined plane.

Now lets find out the amount of wristcock for the 10 degrees accumulator no.3 and lets just say the left arm is 5 degrees above plane

so pluging this into the first equation

10=y-((10/90)times 5))
10=y-0.555555...
lets rearrange this a little
y=10+0.555555...

So the wristcock is 10.55555...

Magical huh