> Though > a block a tackle would work, Ron's suggestion of a differential hoist > seems much better in that it locks if you let go. Question about that > though is how do you change direction? It's a continuous chain. You pull on the other side to lower it. It's hard to even find a picture of one, but maybe this attached little gif will explain it. The problem with a differential hoist, other than finding one, is your chain length has to total at least four times your lift distance. You need a big bucket to contain it and keep it off that marble floor. A regular geared chain hoist would work fine too. You'd have to come up with long enough lift and drive chains, but they wouldn't be underfoot on the floor during the lift, and you can let go without dropping the load. Ideally, a geared electric chain or cable hoist, hung at an appropriate height and controlled from the balcony by pushbutton, would be the slickest and easiest way to go. That is, again, if you can find one with an appropriate load rating. I assume a chain, or more likely cable, will be hung from the overhead beam to about 10' above the glass wall, and the hoist hung from that. One nice thing about a geared chain hoist, electric or manual, is that the heavy sucker can be hauled up the ladder and hung on the cable naked, and the chains can be hauled up separately, and installed. Makes the process more survivable. Ron N -------------- next part -------------- A non-text attachment was scrubbed... Name: difhoist.gif Type: image/gif Size: 1534 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/20070903/ce47d057/attachment.gif
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