Posted by Tom in Chicago on Sunday, January 04, 2009 at 16:43:27 :
In Reply to: There are synthetics. Costly, can't handle dirt. posted by Chriscase on Sunday, January 04, 2009 at 15:55:51 :
We are using carbon fiber core in an elevator modernization here in Chicago. The mechanics tell me it has alot to do with how the AC Drives respond to starting and stoping via electronic sensors verse any strength advantages. Going from 1914 equipment to 2008 all at once !!