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.
Reply | with quote | Posted by Steve Gray 16th September 2003ce 18:09 |
Stone shifting 5 (GordonP, Sep 14, 2003, 12:11)- Stonehengineers Web Site (Steve Gray, Sep 14, 2003, 12:37)
- Re: Stone shifting 5 (nigelswift, Sep 14, 2003, 12:48)
- Strong Argument (ocifant, Sep 14, 2003, 20:40)
- Call to Arms (Steve Gray, Sep 14, 2003, 22:58)
- Hole Profiles (Steve Gray, Sep 14, 2003, 23:26)
- Neolithic Rope! (nigelswift, Sep 16, 2003, 15:52)
- Re: give 'em enough (Wotan, Sep 16, 2003, 16:19)
- Do we need ropes? (GordonP, Sep 16, 2003, 17:09)
- Re: Do we need ropes? (Steve Gray, Sep 16, 2003, 17:37)
- Re: Do we need ropes? (Steve Gray, Sep 16, 2003, 18:09)
- Re: Do we need ropes? (GordonP, Sep 16, 2003, 18:12)
- Re: Do we need ropes? (Steve Gray, Sep 16, 2003, 19:36)
- Re: Do we need ropes? (GordonP, Sep 16, 2003, 19:44)
- Re: Do we need ropes? (Steve Gray, Sep 16, 2003, 22:29)
- Re: Do we need ropes? (GordonP, Sep 17, 2003, 04:55)
- Re: Do we need ropes? (Steve Gray, Sep 17, 2003, 08:38)
- Re: Do we need ropes? (nigelswift, Sep 17, 2003, 08:41)
- Re: Do we need ropes? (GordonP, Sep 17, 2003, 08:57)
- Re: Do we need ropes? (Steve Gray, Sep 17, 2003, 08:59)
- Re: Eh? (Wotan, Sep 17, 2003, 09:05)
- Re: Eh? (Steve Gray, Sep 17, 2003, 09:23)
- Re: inclination (Wotan, Sep 17, 2003, 09:25)
- Re: Eh? (GordonP, Sep 17, 2003, 09:28)
- Re: Eh? (Wotan, Sep 17, 2003, 10:07)
- Re: Eh? (nigelswift, Sep 17, 2003, 10:14)
- Re: LOL! (Wotan, Sep 17, 2003, 10:46)
- Re: Eh? (GordonP, Sep 17, 2003, 11:17)
- Re: Do we need ropes? (GordonP, Sep 17, 2003, 09:12)
- Re: Neolithic Rope! (Steve Gray, Sep 16, 2003, 17:18)
- Re: Neolithic Rope! (Earthstepper, Sep 16, 2003, 17:31)
- Re: Stone shifting 5 (GordonP, Sep 17, 2003, 17:34)
- All up in the air again... (nigelswift, Sep 17, 2003, 22:12)
- Placing the Lintel (Steve Gray, Sep 18, 2003, 12:57)
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