Long Distance => Articles => Topic started by: jrobstewart on Sep 01, 2007, 18:31

Title: CYPLY material
Post by: jrobstewart on Sep 01, 2007, 18:31
At the US Nationals last month, Gregg Snouffer and I were chatting about boom materials. He talked about "Cyply" and said that he had never used it.

Subsequently, we obtained a data sheet from the manufacturer, Red Seal Electric Co., a US based company.   David Hirsch, Tibor Horvath, Andrew Cross and I have been going over the data sheet and have been discussing this material.

Cyply is a trade name for a kind of GFEC that features multiple layers of unidirectional glass fibers laid down between layers of resin.  The product line has three versions of filament patterning: unidirectional, cross ply (0 and 90 deg) and isotropic (0, 45, 90 deg).  It was the isotropic that caught my attention. I wondered if a third direction of glass fiber might add more strength and toughness to the material.

Another function that the multiple layers of unidrectional glass fibres, as described somewhere in the literature, is a reduction in the self abrasion present in glass fibre cloth.  I think Red Seal's theory is that because the unidirectional layers of fibre are isolated from each other by a layer of resin, continuous flexing of the material does not cause the cross-wise fibers to wear through their neighbor due to abrasion. This is supposed to allow the material to maintain its stiffness over repeated flexure.  Tha sounds like a very good thing for boomerangs, especially mine, which crash often!

Having become interested over all the conjecture, Andy and Tib compared the Cyply specs with some of the GFEC (G10) we have been using. I'm not a materials guy so I will paraphrase Tib and Andy's quick assesment - Tib thought that the two directional cross ply specs looked a little better than the 3 way cross ply (isotropic) and Andy thought maybe the Cyply product looked a little better than the G10, although he still prefers G11 to G10.

David, Tib, Andy and I all have a copy of the data sheet (pdf). Let one of us know if you'd like a copy.

We still don't have all the information yet on availability from the supplier but an inital quote shows this material more expensive than standard G10 but still less expensive than carbon fiber.  David is going to try to get some sample material and I'm entertaining the idea of obtainig a sheet big enough to make 3 or 4 Voyager style booms.

I'm wondering if anyone else on this has had experience with this type of material, and if anyone might be interested in splitting the cost of some material to try it.


Title: Re: CYPLY material
Post by: laurent on Oct 06, 2008, 06:20

Eventually what are the conclusions? Did somebody find and test some pieces of this sheets?


Title: Re: CYPLY material
Post by: Mark Legg on Jan 26, 2009, 17:52
I have used this material many times. Red Seal Electric is only a distributor of the material. The Manufacturer is Cytec: The original manufacture was 3M and its original name was Scott Ply. The rights were sold to CyTec several years ago.

Mark Legg

Title: Re: CYPLY material
Post by: hakkapeliitta on Jan 30, 2009, 12:30
 I would like to get a 0.5m x 0.5m plate of 2.4mm they sell it so small amounts?

Title: Re: CYPLY material
Post by: laurent on Feb 20, 2009, 06:12
Some news, anybody?
I am interested too. Maybe we could buy and share a large plate with some other throwers?


Title: Re: CYPLY material
Post by: jrobstewart on Apr 06, 2009, 14:19
Laurent, et al,

Here is a link to the specifications/performance sheet:

1)  If you were to need a sample, would you want the unidirectional, cross ply or isotropic?

2)  You said you are interested in 2.4 mm.  The product is offered in continuous thickness increments of 0.1 mm.

I asked for a small sample last year but they would not send me anything that was big enough to buld a Voyager sized boom.  So I recently requested a price quotation from the manufacturer for a small quantity of both cross ply and isotropic material in 2.4 mm and in 3.0 mm.  I'll let you know when I hear from them.