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From the following elevator drive systems, which is best: 1. Roped Hydraulic Drive 2. Winding Drum
-- (firstname.lastname@example.org), March 04, 2002
No pat answer. A good version of one beats a poor version of the other.
All else equal, I'd favor the drum for its' simplicity.
-- John Brannon (akaelevman@AOL.com), March 05, 2002.
Totally agree with John's answer with one addition. The new Inclinator CD 2200 /Back-up has a full time battery back-up capable of around 75 round trips on a 2 stop installation. They use a VVVF motor and electronic controls for smooth starts and stops and a faster full run speed. We’ve installed many of these with much success. Good luck.
-- Fred (email@example.com), March 06, 2002.