Bruce In Bangkok wrote:
On Sat, 04 Apr 2009 10:47:25 -0500, Brian Whatcott
wrote:
wrote:
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
Ha! You are talking to Mr Cheap, remember.... I don't think twice
about using aluminum ferrules on rigging and squeezing with a pair of
bolt cutters with the jaws ground to shape.(Copper would be better.)
In that scenario, my idea of adding a safety margin is using TWO
ferrules to hold a hard-eye.
Ferrules cost a quarter or so, not a hundred or so. Hard eyes under a
buck.
All the same, I have a hankering for those bolt up terminals, and I like
the idea of the Suncors, even if I can't beef up their reserve strength,
AND they cost way, WAY more....
Brian W
If you are being cheap why not learn to splice cable. A properly
spliced cable will be about 90% the cable strength and cheap. All you
need to splice it is an ice pick.
Cheers,
Bruce
(bruceinbangkokatgmaildotcom)
That is no doubt a fair question. There is nothing much cheaper than a -
what is it called? - a fidd?
Splicing rope is something I can do and get satisfaction from, in
moderation. Moreover, I get the sense that a well-done splice is about
as strong a union as can be obtained.
But splicing wire is (to my mind at least) like knitting a sweater -
something I could do, even have done, but I used a knitting machine to
do it! With just a fidd, it seems (in the abstract) like wrasslin with a
pig. ;-)
I know, It's all in the mind...
BrianW