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On 7/17/2016 10:48 PM, Bob_R wrote:
"Bob_R" wrote in message ... "Paul McGrane" wrote in message ... On 7/15/2016 10:30 PM, Bob_R wrote: still westbound in Cape Cod Canal. Very nice Bob, hard to believe that little cable pulls that big barge! Paul Thanks Paul. Yup, the cable doesn't look very beefy. I assume they need to be gentle with it, especially in heavy seas. Found it! This is a link to a 4-page PDF describing using a variable speed drive on an off-shore tug's winch. The bottom line is that the drive maintains a reasonable tension on the tow line by feeding out and reeling in the line so it doesn't snap. That's how they can get away with such a thin cable. The PDF is copyrighted, otherwise I would post it. http://www.systems-interface.com/pdf/MARVP-AP003A-EN-E_WEB.pdf Bob Interesting, thanks Bob! Paul |
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