Pulleys are used to lift heavy loads by use of mechanical advantage by increasing the length of travel of the pull and decreasing the load. With the addition of a spool and crank handle, you can create a way for the Brackitz pulley system to work for you.
Many of the Brackitz pulley systems like the Elevator Crane, the Pulley Drawbridge, and the Archimedes Crane use a crank handle and spool to wind the pulley string.
Brackitz Pulley Crank Handle Pieces:
Video of the Crank Assembly:
Create a small loop at one end of the string:
Attach the loop on the string to the hook on the spool:
Video of the Crank Assembly, spool, and string attachment:
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