On Fri, 03 Apr 2009 22:00:20 -0500, Brian Whatcott
wrote:

wrote:


Good Old Boat magazine tested the Suncor swageless terminals against
Sta-lok, Norseman and a professionally swaged terminal. The Norseman
failed so badly (69% of cable load rating) that Norseman was permitted
to then provide a sample prepared by the company for a second test,
which it also failed at 80%. The Suncor Swageless surpassed the
professionally swaged terminal and the Sta-lok, although those three
all exceeded the cable's load rating.

http://www.bosunsupplies.com/goodoldboatquickattach.cfm



This pointer to cable terminal tests really got me going, 'til I thought
about it - then when the realization that the terminals were being rated
stronger than the cable's rated load not its breaking stress, I twigged.

If a maker puts a 1.5 design factor on his cable, and
a terminal gives way at 105% of the rated stress, this means the
terminal gives way at 105/150 of the ACTUAL breaking stress -
that's a 70% strength comparison. And the Norseman terminals that gave
way at 70% of rated strength were giving way at 70/150 of ultimate or
47% of ultimate strength.

Brian W

Just go up a size on everything and forget about it, Brian! LOL