Need help determine force from cylinder linkage

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SUMMARY

The discussion focuses on determining the downward force exerted by a rod in a mechanical linkage system, specifically in an auto-leveling front-end loader mechanism. The user calculated moments using the formula M=950xCOS(75.732)x7.81 + (X)SIN(63.414)x9.4, resulting in a force of 1828 lbs, but questioned the accuracy of a 217 lbs result. Accurate calculations require detailed information about the linkage centers-of-mass, lengths between pins, and coordinates of fixed point pins on the loader frame to derive the bucket downforce as a function of hydraulic pressure.

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charandstell
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How can I determine the downward force of the rod with the given cylinder pressure and mechanical linkage? Do I sum my moments about the pivot? I calculated M=950xCOS(75.732)x7.81 + (X)SIN(63.414)x9.4 which resulted in 1828lbs. I get 217 lbs which does not seem right.
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Welcome to PF.

What a confusing picture.
If that is an auto-leveling front-end-loader mechanism, I would solve it using linkages with vectors and moments. To do that, I would need details of the linkage centers-of-mass, lengths between pins, and the coordinates of all fixed point pins on the loader frame.
The force transfer function will vary depending on the attitude of the mechanism.
The aim would be to find the bucket downforce as a function of hydraulic pressure.
 

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