Dyform

[AngusMcDoon]

What's the difference between normal wire and Dyform? Any advantages/disadvantages/price?

TIA.

 

[oldsaltoz]

Got this from the site listed below
Wire Construction

DYFORM is the high performance wire strand which has a higher modulus of elasticity, offering the user less stretch and greater strength when compared with conventional wire of similar size.

http://www.albamarineltd.co.uk/Dyform%201%20x%207.htm



Avagoodweekend........

 

[R32Stbrigid]

Dyform is manufactured from D shaped strands that allow a higher cross sectional area to be achieved for a given wire diameter. This makes it approximately 20% stronger although also heavier. It is important to ensure the fittings (rigging screws etc) are also specified correctly to make use of the additional strength.

 

[snowleopard]

The outer strands of Dyform are flattened on the outer side so make the wire smoother, i.e. more nearly cylindrical. It effectively reduces the diameter of a given strength of wire, being part way between conventional 1 x 19 and rod rigging.

I haven't lived with it (having given up on stays) but when gripping a large diameter dyform stay, the edges of the strands feel sharp. It probably doesn't affect chafe of sails but I wonder if it wears sheets that rub across it,

 

[Strathglass]

I looked at it seriously but decided against it.

I was told by the spar supplier, wire supplier and others that it tends to chaff sails much more than 1/19 and in most instances unless racing at high level the extra cost can not be justified.

Iain