© Facnor

Flying sails like Gennaker, Code 0 or Asymmetric Spinnaker fitted on furlers are supplied with an anti-twist luff rope. Anti-twist as it needs to transmit the rotation down to the top of sail. For an optimum revolution the jaws of furler mechanisms are connected to the luff rope thimbles. And for an optimum halyard tension, a two-to-one block can be fitted.

© Facnor
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 SB Blocks installation