The RDM Z90 from S4LT is one of those parts that you simply have to grab. The completely red anodised fitting and the never-before-seen length adjustment simply have to be grasped in the truest sense of the word.
S4LT: the extension that seals the mast.
A full mast increases the weight of the rig - at least until the water has drained out again. And in the event that the rig and board are separated, a rig with a sealed mast will certainly stay up longer. The designers have therefore realised the length adjustment without holes and sealed the pivot hole at the top. A solid rubber gasket between the mast and the sleeve ring on the extension prevents water from penetrating. The inventors therefore list a number of advantages:
- Stylish anodised aluminium construction
- Waterproof design, so the extension and mast remain free of water
- Suitable for sails with 0-degree arranged pulley
- Suitable for sails with 90-degree pulley arrangement
- Fast trimming using loop technology
- Power-saving trimming thanks to 6x deflection
- Easy to adjust adjusting ring
- Trimming to the centimetre
- Minimum extension only 5 centimetres (like zero base)
- Scale with marking option for all your sail sizes
- Premium Marlow Formula 3.8mm rope
- Z90 - A190 with an adjustment range of 5 to 19 centimetres
- Z90 - A380 with an adjustment range of 5 to 38 centimetres
surf impression: The S4LT Z90 is a very high quality product. The roller block allows very good threading options for all different roller blocks from sail manufacturers (with the exception of the Severne 4-fold block). The length adjustment seems a little more delicate, and the sealing ring also has to be positioned - perhaps not ideal if self-confessed hectic riggers need to quickly adjust the length on a sandy beach. The price for the 19-centimetre version is 99.50 euros and the 38-centimetre extension costs 109.5 euros.
