Polyamide anchor rode????

Onyva

Onyva

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In France and cannot find 3 strand nylon for love nor vin rouge. Can find LOTS of "Polyamide" rope though. Anyone come across this before and, if so, would you recommend it for anchor rode? [ QUOTE ]


[/ QUOTE ] The best kind of ships on the oceans are friendships
 
I would not use 3 strand anyway. octoplait is much better as an anchor rope, and I would buy it on ebay and have it sent to you!
 
Not keen on that as it looks very difficult to splice. Also leaving on a 2 year circumnavigation in 16 days so no time for e-bay unfortunately but thanks for the advice (Talbot)
 
octoplait is actually easier to splice than 3 strand (see here. The rope is also much easier to handle, as it doesnt resist being rolled up on deck and thus takes up a lot less space to stow, plus less likely to kink or get into a horrible knot.
 
I fully agree.. Polyamide is the generic name of the material itself. NYLON is the trade mark of the polyamide manufactured by "Dupond de Nemours". You can also find ERTALON which is the Polyamide manufactured by the company ERTA...

Polyamide (or NYLON) is the best rope for an anchoring rode as it has a good elasticity coefficient.

anchoringrope.jpg

(abstract from my book on anchoring - to be published early 2006)
 
[ QUOTE ]
I fully agree.. Polyamide is the generic name of the material itself. NYLON is the trade mark of the polyamide manufactured by "Dupond de Nemours". You can also find ERTALON which is the Polyamide manufactured by the company ERTA...

Polyamide (or NYLON) is the best rope for an anchoring rode as it has a good elasticity coefficient.

anchoringrope.jpg

(abstract from my book on anchoring - to be published early 2006)

[/ QUOTE ]

I'm surprised to see that polyethylene is nearly 4 times stronger than nylon. Are you sure that's right?
 
[ QUOTE ]
I fully agree.. Polyamide is the generic name of the material itself. NYLON is the trade mark of the polyamide manufactured by "Dupond de Nemours". You can also find ERTALON which is the Polyamide manufactured by the company ERTA...

Polyamide (or NYLON) is the best rope for an anchoring rode as it has a good elasticity coefficient.

anchoringrope.jpg

(abstract from my book on anchoring - to be published early 2006)

[/ QUOTE ]

I do hope that you change to SI units and correct the spelling mistakes in the net year. Pascals and "Fibre" would be better.
 
I might be missing something here, but the only SI related measurements I can see are DaN/mm2, which are SI

there are 7 basic categories in SI
Category Name Abbrev.

Length metre m
Mass kilogram kg
Time second s
Electric current ampere A
Temperature kelvin K
Amount of substance mole mol
Luminous intensity candela cd

From this are derived the subordinate SI measurements, eg

farad [F]
The farad is the SI unit of the capacitance of an electrical system, that is, its capacity to store electricity. It is a rather large unit as defined and is more often used as a microfarad. It is named after the English chemist and physicist Michael Faraday (1791-1867).

hertz [Hz]
The hertz is the SI unit of the frequency of a periodic phenomenon. One hertz indicates that 1 cycle of the phenomenon occurs every second. For most work much higher frequencies are needed such as the kilohertz [kHz] and megahertz [MHz]. It is named after the German physicist Heinrich Rudolph Hertz (1857-94).

joule [J]
The joule is the SI unit of work or energy. One joule is the amount of work done when an applied force of 1 newton moves through a distance of 1 metre in the direction of the force.It is named after the English physicist James Prescott Joule (1818-89).

newton [N]
The newton is the SI unit of force. One newton is the force required to give a mass of 1 kilogram an acceleration of 1 metre per second per second. It is named after the English mathematician and physicist Sir Isaac Newton (1642-1727).

ohm [Ω ]
The ohm is the SI unit of resistance of an electrical conductor. Its symbol, is the capital Greek letter 'omega'. It is named after the German physicist Georg Simon Ohm (1789-1854).

pascal [Pa]
The pascal is the SI unit of pressure. One pascal is the pressure generated by a force of 1 newton acting on an area of 1 square metre. It is a rather small unit as defined and is more often used as a kilopascal [kPa]. It is named after the French mathematician, physicist and philosopher Blaise Pascal (1623-62).

volt [V]
The volt is the SI unit of electric potential. One volt is the difference of potential between two points of an electical conductor when a current of 1 ampere flowing between those points dissipates a power of 1 watt. It is named after the Italian physicist Count Alessandro Giuseppe Anastasio Volta (1745-1827).

watt [W]
The watt is used to measure power or the rate of doing work. One watt is a power of 1 joule per second. It is named after the Scottish engineer James Watt (1736-1819).

So the Newton is actually an SI measurement, and da (deca)is one of the SI prefixes

yotta [Y] 1 000 000 000 000 000 000 000 000 = 10^24
zetta [Z] 1 000 000 000 000 000 000 000 = 10^21
exa [E] 1 000 000 000 000 000 000 = 10^18
peta [P] 1 000 000 000 000 000 = 10^15
tera [T] 1 000 000 000 000 = 10^12
giga [G] 1 000 000 000 (a thousand millions = a billion)
mega [M] 1 000 000 (a million)
kilo [k] 1 000 (a thousand)
hecto [h] 100 (a hundred)
deca [da]10 (ten)
1
deci [d] 0.1 (a tenth)
centi [c] 0.01 (a hundredth)
milli [m] 0.001 (a thousandth)
micro [µ] 0.000 001 (a millionth)
nano [n] 0.000 000 001 (a thousand millionth)
pico [p] 0.000 000 000 001 = 10^-12
femto [f] 0.000 000 000 000 001 = 10^-15
atto [a] 0.000 000 000 000 000 001 = 10^-18
zepto [z] 0.000 000 000 000 000 000 001 = 10^-21
yocto [y] 0.000 000 000 000 000 000 000 001 = 10^-24
 
I'm surprised to see that polyethylene is nearly 4 times stronger than nylon. Are you sure that's right?

In terms of magnitude, Hylas is approximately correct (exact strength depends on rope construction and on mix, if of mixed materials as is often the case).

In case not realised Spectra/Dyneema are polyethylenes.

John
 
Rope and floaters ....

Not for me I'm afraid .... if a rope is to be used .......... not a floating one ...

Floating for mooring ok ... that is sensible but anchoring ??? But bof HYlas and I are old adversaries on this 'hairy' topic !!

/forums/images/graemlins/grin.gif
 
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