8 lb window sash weight worked for me.
Door counter weight pulley system.
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A theatrical counterweight system provides a simple mechanical method of raising and lowering various balanced loads by a system of pulleys and weight carriages.
Well done this reminds me on a system i had done to open louvers on top of the front door using a multi pulley system i did not use any counterweight though but what was cool about it was that i managed to make a system that opened and closed the two louvers simultaneously with the rope hanging only from one side.
4 x 1 5 00.
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They are ideal when security is essential where noise or temperature control might be an issue where you need a minimal internal or external projection and.
As the scenery and equipment loads are varied the amount of counterbalance is adjusted on the weight carriage so that the system can be raised and lowered with a minimum amount of effort.
And you can double the effectiveness of a pulley system by increasing the number of pulleys in the setup.
When the pulley is fixed to a solid anchor and a rope is threaded through the grooves on the pulley s wheel it can be used to lift heavy weights much more easily than doing it by brute force.
I selected weight by using plastic bag filled with rocks until i found the right weight.
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Shoulder pulley system over the door metal bracket therapists choice for physical therapy.
12 antique 1908 window weight pulleys w scalloped edge all work.
It was quite practical.
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A counterweight garage door doesn t need a tracking system which reduces its maintenance and it operates on a simple remote control mechanism that sits to one side of the opening.
Antique cast iron double hung window sash counter weight 9 5 lbs 15 5 long.
Tie weight to length of clothes line loop over top pulley 2 thru the center pulley 1 and tie it to hook at bottom of post.