[TXnMA]

Dunn talks about it and draws sketches. This guy

http://www.theforgottentechnology.com/newpage3

Builds his own wooden fixtures and moves things -- BIG things!

Watch the little movies on the above webpage.

This guy specializes in using counterweights, paired fulcrums, and the mechanical advantage provided by using paired inclinled planes -- with different slopes.

Of course, seeing him roll a square-section stone block eight feet down his sinusoidal "round road" -- with just a single push of his hand -- is impressive, too...

[ZULU]

That’s AWESOME!!

Thanks for the link.