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

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

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

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)

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)



And a LARGE box of band aids!

On Sat, 04 Apr 2009 23:32:45 -0500, cavelamb
wrote:

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)



And a LARGE box of band aids!

I was trying to encourage the lad. He'll discover the need for
band-aids all by himself.


Cheers,

Bruce
(bruceinbangkokatgmaildotcom)

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

On Sat, 04 Apr 2009 23:40:48 -0500, Brian Whatcott
wrote:

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

I don't think that they call it a "fid" when you are splicing wire,
but maybe. Usually just a ice pick filed a bit oval.

Cheers,

Bruce
(bruceinbangkokatgmaildotcom)