CCFOAM
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Spent most of day watching the disk slowly turn. The upper disk is absolutely turning about 1 tooth every minute or so. But the bottom disk with the mark on it doesn't seem to move. I've had it apart half a dozen times and do not understand how this could happen. It looks like the bottom disk is rotated by water flowing out of small holes under the disk into voids on bottom of lower disk. What I don't see is how the upper disk rotates. Is it just friction between the two disks? Is it even possible for the upper disk to rotate, but not the lower disk?
Somebody please help!
Chuck
Somebody please help!
Chuck