GL: spurs

[Bob DeGroot, DCH]

About three years ago we were looking for line cutters for our prop shafts.
Someone was kind enough to send me an independent study that was done
comparing the top five or so cutters. Spurs were rated #1, Prop-Protectors
#2. They cut everything except cable and net. But by cost factor and ease of
installation, Prop-protectors won out for us.

http://www.prop-protector.com/ 

I still have a copy of the study (PDF), so if anyone wants to see it I have
it linked to my website. http://www.boatersites.com/HelpfulLinks.htm. Scroll
down to the heading Safety and it's the second link from the bottom of that
section entitled, Line Cutters - research study. It's about 1.7 MB in file
size.

Best,
Bob

Bob DeGroot, D.C.H.
M/V Spirit Dancer
DeFever 49 CPMY

-----Original Message-----
From: great-loop-bounces at lists.samurai.com
[mailto:great-loop-bounces at lists.samurai.com] On Behalf Of Ron Rogers
Sent: Thursday, July 23, 2009 3:17 PM
To: 'Margery Griffith'; pslinger at mindspring.com
Cc: great-loop at lists.samurai.com
Subject: Re: GL: spurs

If I understand correctly, the problem posed was dealing with a steel cable
or a ski tow rope with steel cables in it. The British test had a variety of
prop protectors deal with what looked like electrical wires. After cutting
the first wire, they all jammed to varying degrees. If your prop(s) hit a
broken or discarded wire tow rope, you are up the creek unless the prop
itself knocks it away. Cutting such a wire would require a hacksaw (and much
energy) or a long-handled cutter, or an hydraulic cable cutter - and luck.
The extent to which any protector can do anything depends as much upon the
design of the cutter as it does the method of attaching it to the boat. It
is unlikely that anything will work other than a properly equipped and
experienced salvage diver.

Ron Rogers
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