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Stone shifting 5
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Steve Gray
Steve Gray
931 posts

Re: Do we need ropes?
Sep 16, 2003, 18:09
Hey, I think I've just had a brainwave.

Suppose we made a long rectangular frame of logs that can be dug into the ground so that it will lean against the back of the 70deg stone near the top like a shore. Levers attached to the top edge of the frame would make contact with the stone and would stick up above it. Ropes from the levers would then be pulled causing the stone to be raised a little. Packing would be rammed into the hole behind the stone and then the rope pullers would relax. When they did, the frame would drop a little to take up the new position of the stone and the process can be repeated.

The redcution in mechanical advantage caused by the frame moving lower on the stone will be compensated for by the fact that the leverage required to raise the stone becomes less as the stone gets more upright.
In reply to:
Re: Do we need ropes? (Steve Gray)		 Replies:
Re: Do we need ropes? (GordonP)
Re: Do we need ropes? (GordonP)
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