In this blog we explore the differences between Torsional Ropes and Custom Torsional Cables, the pro's and cons of each and provide guidance on the specification boundaries between the two.
Image Credit: Doyle Oleu Sailmakers
Previously on the upffront.com blog, we looked at how to measure a new torsional cable for your boat, and emphasised the importance of an accurate measurement to ensure a correct cable specification for your new code zero or downwind asymmetric.
Image credit: Facnor
You have decided to go for a new code zero or downwind asymmetric. To ensure the furling system fits your boat, it is important to take a physical measurement of the maximum space available from the attachment point of the drum to the full hoist halyard position.
You have a 39 footer and are interested in using the same furling unit for both your code zero and asymmetric spinnaker. We take a look at the furling unit options and discuss the available torsional cables depending on your sailing style and budget.
What are the key differences between bottom-up and top-down furling units and do I need a dedicated unit for each type of furling?
Top down furling and bottom up furling are expressions used primarily for continuous line furling systems using a torsional cable/rope, around which the sail furls. As opposed to a traditional foil furling system, used on cruising boats, where the jib/genoa is hoisted in a luff groove in the aluminium foil and the sail furls around the full length of the foil.
Have you got any idea what's the difference in design between a top-down or bottom-up torsional cable? Find out what makes a good torsional cable and the important differences between the two applications.
