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Whilst I wouldn't call myself an expert, I have had experience with the laminate used on some X-Air standard and F models, and hope I can?shed some light here.

It is often mistakenly identified as?Ultralam but this is incorrect, it?is actually a Dimension Polyant cloth called Profile 180. This is a basic laminate of Dacron and mylar film which has none of the UV resistant properties of Ultralam which was used on later model Thrusters.

Profile 180?has some good qualities - zero porosity, light weight, and a?range of colours among them.?Unfortunately most of its stretch resistance is due to the film part of the laminate. This?can get brittle and crack?with UV exposure,?time and crushing or creasing.?Stitch holes also?tend to act as starting points for separation (or delamination)?of the film.?

Once the film starts to crack, the strength of the fabric is reduced locally?and the cracking spreads. If the aircraft is flown with these cracks in the fabric?the airflow can easily peel away the film, de laminating the skins. The Dacron taffeta, without the film attached,?has very low strict resistance and allows air to easily flow through it.

For these reasons Wingtech does not offer or recommend Profile 180 for and ultralight aircraft skins. We?only offer?replacement skins made with?Dacron. It has the same range of colours, good porosity values and?a much longer service life. It?represents better value for our customers.?

Alan Daniel

WINGTECH?


On Sunday, 15 November 2015, Michael Coates mcoates@... [X-Air_Ultralight_Aircraft] <X-Air_Ultralight_Aircraft@...> wrote:

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Yes, i have seen this and this is why we dont buy it anymore..... Alan is the fabric expert, hopefully he can comment.

palmettoe@... [X-Air_Ultralight_Aircraft] wrote on 15/11/2015 3:52 PM:

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Seamus, Michael, Eric, anyone ever had a?problem with ultralamm delaminating while being stored inside for several years? John ?

-----Original Message-----
From: 'Seamus O'Donnell' etronics@... [X-Air_Ultralight_Aircraft]
To: X-Air_Ultralight_Aircraft
Sent: Sat, Nov 14, 2015 6:51 pm
Subject: Re: X-Air Ultralight Aircraft Xair Hawk

?

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As far as I know yes, you need to get your inspector to check with NMAI tech office

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Seamus

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----- Original Message -----

From: simon@... [X-Air_Ultralight_Aircraft]

To: X-Air_Ultralight_Aircraft@...

Sent: Saturday, November 14, 2015 8:13 PM

Subject: X-Air Ultralight Aircraft Xair Hawk

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Can I fit a parachute to the Xair Hawk in Ireland?

--
With regards,    Michael Coates
Company Director X-Air Australia
Gold Coast, Australia.
AU +61 7 5568 7770
USA +1 213 984 1237

PIPISTREL AIRCRAFT DEALER OF THE YEAR 2012
Winner of the EAA August Raspet Award 2012

mailto:mcoates@...

skype name:   xcomavionics

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