Posted by Janicholson on January 29, 2010 at 13:50:10 from (199.17.6.222):
In Reply to: OT cable strength posted by Troy L on January 29, 2010 at 11:16:12:
The poly strength needs to be checked for compliance with the crane spec. As Walter indicates, the lift will be 25% less, and faster, but are the chives designed for smaller cable?? if not they will have a line contact with the new cable stressing the inner strands, and making dangerous lifting. With a 25% reduction in lift there will be a tendency to lift as large a load as before, stressing the cable. I would not go there. Using the correct size cable in a new technology would be much better. If there are wear marks in the chives from cable contact, the twist and lay direction and pitch of twist must be the same. If they are smooth, it would be OK to use the same size as specified. Lives depend on your decision. Maybe yours. Jim
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