Dyneema halyards

Have there been any discussions about allowing dyneema line in place of the wire halyards on a Scot?  I assume it would still fit on the spools of the winch box?

Comments

Haven’t heard any discussion

I haven’t heard any.  I ask what would the benefit be?  Is Dyneema lower in stretch, than a steel cable?

I would think they would cost more.

Not trying to be negative, but it would be interesting to hear what you think the benefit would be,  The current steel cables are pretty durable, and not very expensive to replace.

 

Phil Scheetz

Flying Scot 5919

Fleet 163, Nockamixon Sail Club

Dyneema

I don't even think they make anything that small.

They actually do make it very

They actually do make it very small.

Amsteel Blue:

 

  DIAM.
inch
CIRC.
inch
WEIGHT PER 100 FT.
lbs
AVG. STRENGTH
lbs
MIN. STRENGTH
lbs
  DIAM.
mm
CIRC.
mm
WEIGHT PER 100 M
kg
AVG. STRENGTH
kg
MIN. STRENGTH
kg
  ISO 2307 STRENGTH
metric tons
 
  7/64 5/16 0.3 1,600 1,400   2.5 7.5 0.45 730 650   0.73  
  1/8 3/8 0.5 2,500 2,300   3 9 0.74 1,100 1,000   1.1  
  5/32 15/32 0.75 4,000 3,600   4 12 1.1 1,800 1,600   1.8  
  3/16 9/16 1 5,400 4,900

Chris Edwards

Dyneema is lighter, stronger

Dyneema is lighter, stronger and just as cheap as steel wire.  Easier on the hands and very easy for the common sailer to splice and rig over steel wire.

Chris Edwards

Dyneema

If you are planning on installing them and race at FSSA events, it's possible it will be deem not class legal. The Handbook specifies that the halyards are to be wire.

Why bother

The steel halyard might weigh 2 pounds.  The Dyneema halyard might weigh 8 ounces, and is not likely class legal.  The boat weighs like 700 pounds and the people weigh 300-400.  Seems like a miniscule benefit.

Sandy Douglass was very careful about the Scot, to not create an incremental arms race, in an ever changing spec for the boat.  What’s next a carbon mast and boom?  BTW, they would be lighter!

If you feel this is an important improvement in the Scot, you may want to ask FS Inc, if they think it’s good idea, and then craft a request for a Chief Measurers Ruling, which is a formal process for ruling on whether items are class legal.  It usually applies to items that are not already specifically spelled out.  The halyards are already specified as wire.

Phil Scheetz

Flying Scot 5919

Fleet 163, Nockamixon Sail Club