Weight Formula of Spool of Wire Ropegreenspun.com : LUSENET : Elevator Problem Discussion : One Thread
Hi There, Most elevator companies have unmarked or partial spools of hoist rope that has been sitting around for years. Is there any formula for weighting the spools and then measure the size of the rope to determine the aprox. length of the cable minus the spool verses measuring the cable. What do rope companies do, do they just transfer and measure unknown length of cable to another spool. Thanks again, Jim
-- Jim (email@example.com), September 28, 2004
try www.samsonrope.com/home/pdf/winding%20rope%on%20Drum.pdf they show a formula for determining how much rope will go on a drum depending on the variables of rope dia, drum dia, flange sizes.
-- geoff judge (firstname.lastname@example.org), September 29, 2004.
I'll tell you what would stop you from having a bunch of rope around you can't use - make the guy who measured or the salesman who figured for the ropes pay for the unusable/wasted rope. I can understand being 20-25 feet per rope too long, but if you've got 50-100 feet of rope left after a rope job per rope, someone doesn't know how to read a tape.
-- (email@example.com), September 29, 2004.
Jim, sorry but that web address seems incorrect. I have sent an attachment direct to your Hotmail as it would not attach whilst in the forum. If you haven't got it, please let me know. As for having rope left on a drum, everyone knows that drums come in set lengths and this makes transportation, storage and handling easier.It also guarantees that all the rope is from the same batch when manufactured. It is often cheaper to buy 2 thousand feet of rope than buy 4 ropes at 475 ft each anyhow.
-- geoff judge (firstname.lastname@example.org), October 06, 2004.