Actually, Nigel's idea of erecting buttressing on the far side of the hole has some merit. I was thinking that it would just be in the way of the rotating stone, but we could have a couple of long (40') logs set into the ground at an angle so that their top ends are just below where the top of the block will be when erected. Support logs set back far enough from the hole to allow the block to swing freely would carry the weight of the long logs and a short timber would join their top ends together and form an impact plate for the block. Another log would be fastened to the top of the block either by rope lashing or your wooden collar, just above the point at which it will make contact with the impact plate. This would prevent the buttress logs from rising up the block and would result in a considerable braking force being exerted on the block.
 Reply | with quote | Posted by Steve Gray
30th August 2003ce
22:40 |
Stone Shifting 2 (nigelswift, Aug 26, 2003, 17:00)- Re: Stone Shifting 2 (Jane, Aug 26, 2003, 17:16)
- Re: Stone Shifting 2 (Steve Gray, Aug 26, 2003, 17:46)
- Re: Stone Shifting 2 (GordonP, Aug 26, 2003, 20:44)
- Re: Stone Shifting 2 (FourWinds, Aug 27, 2003, 11:24)
- Re: Stone Shifting 2 (nigelswift, Aug 29, 2003, 09:10)
- Steve's idea to fix a pivot log under the stone (nigelswift, Aug 30, 2003, 08:24)
- Which Method? (nigelswift, Aug 31, 2003, 07:09)
- Pi in the sky (baza, Aug 31, 2003, 17:44)
- Re: Stone Shifting 2 (jimit, Sep 01, 2003, 19:39)
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Head To Head 
Re: Or maybe we should maximise slippage? (Steve Gray)