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Stone Shifting 3
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GordonP
474 posts

Re: The hole for stone 56
Sep 06, 2003, 07:40
The BBC used an "A" frame as a form of gearing, the rope from the top of the stone was attached to the "A" frame about one third from the bottom of the "A"frame and the pulling rope was attached to the top, giving an advantage of about 3 to 1.

I instantly saw this as cheating because it assumes the builders had a knowledge of gearing, a sophisticated concept.

I know a lever is a form of gearing but to use it, it is not necessary to understand it.

Try this, image the stone is in the hole lying at say 70 degrees. continue to build up the tower until it is level with the top of the stone. Place some men on top of the tower holding levers vertically between the stone and the tower using the tower as a fulcrum. Trail ropes from the ends of these levers to men at ground level. If the levers were about 10 or 12 foot long the men on the ground would gain an advantage of 10 to 1. We would still only need a few men and we would still be using levers perhaps without knowing how they worked.
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Re: The hole for stone 56 (Steve Gray)		 Replies:
Re: The hole for stone 56 (nigelswift)
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