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Shrimper Flexible Jib Reefing Foil

Rob Helyar has developed an alternative to the Holt Allen Jib reefing foil arrangement, in association with Jeckells Sails. It is a very simple, cost effective and most importantly, virtually unbreakable, alternative to the rigid Holt Allen system, which is both expensive and susceptible to damage.

The Helyar design incorporates a slot in the jib luff, through which, the 25mm flexible foil is fed. The sail is lashed to the foil at the head and also the tack, where there is scope to tension the luff to remove any creases. The current Holt Allen is reversed, in this respect and so, cannot be retensioned without lowering the spar completely.

The foil has a wire inner forestay with eyes moused at both the head and tack ends. At the head, the forestay is secured to a roller bearing swivel; to ensure smooth reefing and that, in turn, is attached to the jib halyard. At the tack the inner forestay is attached to a Barton 3.5” reefing drum, which is, in turn secured by a shackle, to the bowsprit exactly as for the Holt Allen spar.

Head and tack lashings will be designed for easy removal from the foil for storage and transportation, although there will be no concerns when dropping the rig for trailing as there is minimal risk of damage.

Head and tack lashings will be designed for easy removal from the foil for storage and transportation, although there will be no concerns when dropping the rig for trailing as there is minimal risk of damage.

The pictures show the general arrangement however two changes are in hand for the ‘production model’, a slightly longer shackle at the tack to present the sail at the same position as the Holt Allen Rig and a more refined method of tensioning the tack to the inner forestay eye. You will note that there is no need to secure the reefing drum to the forward forestay, currently required with the Holt Allen option.

Summary

The proposed alternative to the current Holt Allen offers the opportunity to incorporate a cost effective, robust, and flexible system with no anticipated loss of sailing performance.

Telephone Number 01993 702 608

Email Address info@flexible-reefing-spars.co.uk


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