Hydrostatic Head Testing of .75 oz Cuben Dyneema, Green with E type Myler

[Stephen Seeber]

Sam Farrington requested that I perform a Hydrostatic Head test on two samples of .75 oz/ square yard Cuben Dyneema fabric, green, with E type Myler.  I don’t know the age of the fabric. Perhaps Sam can provide that information.  The 18″ by 18″ samples were sent rolled in a tube, so no creasing was present.  I tested one sample as received.  The other was aged using the process developed by Richard Nisley.  The results are as follow:

As can be seen, there is a fair amount of variation among each group of samples.  However, the aged samples show substantial degradation in hydrostatic head.

[Stephen Seeber]

Guess I need to learn to spell Mylar!

[Sam Farrington]

Thank you, Stephen.

The material, as received from Cubic Technologies, was labelled “CT2E.08”

Found the thread I posted about it at:  https://backpackinglight.com/forums/topic/41273/

So it is about eight years old since purchase, stored rolled on the tube it was shipped on since January 2011.  But don’t know it’s date of manufacture.

Did not make a tent out of it, and given the water resistance after simulated aging, and some other issues discussed in the above link, do not expect I will.  Hope this is helpful.

 

[JCH]

Very interesting…so the samples tested are approximately the same age (first half of 2011) as those tested in RN’s “dirty little secret” post…arguably the genesis of the Cuben HH discussion on BPL.

It would be very interesting to see identical tests done on current production 0.75 DCF to verify the claims that the longevity of the mylar has been improved.  Even better, and obviously quite a bit of work to pull off…tests on 0.75 material of several different vintages.

[Stephen Seeber]

If someone has samples of current fabric , I can test it.  However in view of the results of my recent test of .5 oz new Dyneema, it should do well. PM me to set up the test.

[Author]

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