Free millwright simulators
Drive the same simulators used in CrewForge lessons and videos. Every number is worked out live and shown step by step, in imperial or metric. Each one has guided challenges, predict-then-reveal questions and a common-mistakes mode.
Sling angles and load angle factors
Two-, three- and four-leg bridles, chokers and baskets. Lower the sling angle and watch the tension in each leg climb.
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Hydraulic cylinder circuit
A pump, relief valve and 3-position directional control valve driving a double-acting cylinder. See the pressure the load needs, rod speed from pump flow, and what happens when the load needs more than the relief setting.
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Rim-and-face shaft alignment
Take dial readings at 12, 3, 6 and 9, check they're valid, then work out the shims and moves at the motor's front and back feet.
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Block and tackle and chain falls
Reeve 1 to 8 parts of line, add sheave friction, or switch to a chain fall. See your pull, how far you pull, and where the effort goes.
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Pump curves and affinity laws
Change speed, impeller diameter, valve opening and static head. Watch the operating point move along the pump and system curves.
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See a complete lesson, free
Sling angles and load angle factors: the written lesson, simulator figures, worked examples, a seven-question practice quiz and a printable textbook chapter.