Spars & Rigging

Carbon mast spars - Our carbon tubes of 8 mm diameter and over are made from high modulus carbon and are approximately 60% stiffer than tubes made from high strength carbon. Our carbon tubes less than 8 mm diameter are made from high strength carbon.

Alloy mast spars - All aluminium alloys have the same stiffness. The only way to get a stiffer alloy mast is to increase the diameter and/or wall thickness. The GROOVY mast tubes we stock have a medium temper that enables them to be pre-bent easily to the shape required without great danger of breakage. The 11 mm diameter round mast tube we stock is is of 7075 grade T6 temper alloy and is difficult to add pre-bend to. To ease this process we have a mast bending tool. There is a thorough explanation of this subject in the FAQs section.

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