In rec.skiing.alpine Brian Nystrom wrote:
Michael Daly wrote:
On 5-May-2006, Bill Tuthill wrote:

Both are lighter than Spectra rope, and stronger than polypro rope.
The Samson Lite Speed actually has higher tensile strength than Spectra
of the same diameter.

I'm late to this thread, but I thought I'd comment.

You do know that Spectra and Dyneema are the same thing, right? (different
trade marks).

In case anyone actually cares, Spectra is the name of product Allied
Signal manufactures in the US under licence from Hoescht-Celanese in
Germany, the manufacturer of Dyneema. They are identical fibers, though
they can be made into a variety of products that may differ widely.

Ultra High Molecular Weight Extended PolyEthylene if I remember
right. The carbon bonds are stretched out toward 180 degrees so it is
very stiff since you are pulling on the actual bond rather than
bending it. Once you get it warm though, those bonds go back toward
they're normal angle, making it less stiff.

-klaus