It doesn't look like dyform is permitted to me. What are you seeing that indicates dyform diamonds are allowed?


F.6 STANDING RIGGING
F.6.1 MATERIALS
(a) The standing rigging shall be of stainless steel.
(b) Fittings may be made from or include carbon fibre in their construction.
20 International Formula 18 Class Rules 2010
F.6.2 CONSTRUCTION
(a) MANDATORY
(1) A forestay and bridles of 1 x19 or 1 x 7 stranded wire of minimum
diameter of 3mm.
(2) Shrouds of 1 x 19 or 1 x 7 stranded wire of minimum diameter of
3mm.
(3) Trapeze wires of stranded wire and minimum diameter of 2.5mm.
(4) Dyform® or similar construction is prohibited.
(b) OPTIONAL
(1) A pair of diamond wires

David Ingram
F18 USA 242
http://www.solarwind.solar

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