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Thanks for the replys, I will get back on this project after the holidays and will do some more calculating.

Thank you makes sense now. What is the proper way to factor in the angle of the cylinder?

With this type of lever I lose mechanical advantage, so wouldn't the "Mechanical Disadvantage" decrease? Making it easier to lift?

Wouldn't the force required to raise the mast decrease as it becomes more vertical? I would expect the hinge to take more force off the cylinder as it lifts.

Based on this I came up with this data: Fe = 8000 * 29 / 4.5 Fe = 232k /4.5 Fe=51,556 lbs

Here is a crude drawing, not to scale.http://files.engineering.com/getfile.aspx?folder=e67be112-fde6-492c-9132-d02dab6ed90a&file=Tower.jpg

A question from a computer dweeb to you Mechanical Engineers. We need to size a hydraulic cylinder for a wind turbine tower. The tower is hinged 2 feet up the base and the cylinder attaches 4.5 feet from the hinge. The bottom of the cylinder attaches 1 ft from the tower base. Total height of the...