Winch cable

From Aerokurier: Plastic winch cable now in series production
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After a year of testing at AeC Landau the Lippmann Tauwerk GmbH has begun
production of Dyneema as a winch-towing cable. Lippmann Tauwerk has
developed the necessary braiding and coating of the "Dynatec Hoistline"
plastic cable for use in winch-launching.

The big advantage of the new cable is its low weight. It weights just
one eighth of conventional steel cable with the same breaking strain. The
lower weight is reflected in greater tow heights and (where possible) in
longer cable runs.
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Dyneema is the European marketing name for Spectra. (Ultra High Molecular
Weight Poly Ethylene)

Bill Daniels

Price per thousand feet?

As fast as the manufacturers are building Spectra, Plasma and Dyneema
plants, price is going to be heading down. Right now they are evidently
selling all they can make.

BJ

MHende6388 wrote:

Price per thousand feet?

22-08-2003 01:17, Bill Daniels:

The big advantage of the new cable is its low weight. It weights just
one eighth of conventional steel cable with the same breaking strain. The
lower weight is reflected in greater tow heights and (where possible) in
longer cable runs.
How about it's durability?
Can a cut cable be rapaired in field conditions?

Could people who did the testing share their reports with us?
I'm courious about cable's physical specifications - how elastic it is
(along it's length), how it stands weather conditions, etc.

--
Wojtus'.net __|__
FidoNet: 2:484/47 `--------o--------'

Wojciech Scigala wrote:

How about it's durability?
Can a cut cable be rapaired in field conditions?

The guy from the Landau Aeroclub did a presentation at the last Segelflugtag
in Berlin. When asked about cable breaks, he told us, sorry, can't talk
about that, we had none. At that time they had done 900 launches. However,
he confirmed that the cable can be repaired quite easily.

Eggert

On Fri, 22 Aug 2003 09:34:46 +0000, Wojciech Scigala
wrote:


How about it's durability?
Very good. No cable breaks due to operational stress yet, but two or
three after the cable was damaged artificially.

Can a cut cable be rapaired in field conditions?
Yes. Very easily within 5 minutes.


Could people who did the testing share their reports with us?
I'm courious about cable's physical specifications - how elastic it is
(along it's length), how it stands weather conditions, etc.

The cable is very stiff, and so far no problems with weather
conditions have shown up yet (the cable is used in Germany weather at
moderate temperatures on a grass runway).
So far 5 or 6 clubs in Gemany are using Dyneema yet.

If you have further questions, ask me.




Bye
Andreas