Boat propeller SD15

foldingfixed-pitchsaildrive

Dimensioned to withstand the pressure of larger saildrives and motorsIn 18/19 Flexofold developed the folding propeller for SD15 from ZF. In close collaboration with Yanmar, the first test rounds were run with a Kufner 54 equipped with a Yanmar 4JH110 with 110 HP.In 2023, Flexofold developed a new hub for SD15 saildrive after Yanmar introduced the 4LV150 on saildrive. The aesthetics of the hub have been taken to a new level, with lines that flush perfectly with the saildrive.Not only is it dimensioned to withstand the pressure of larger engines and more horsepower, but it also retains the benefits of Flexofold folding propellers, such as low drag, higher speed, and better safety.The folding propeller for SD15 saildrive is developed in the well-known Flexofold design, with the technical advantages the brand is known for.It meets the special technical demands of the inner hub due to the increased horsepower in large boat engines.So if you upgrade your boat to a bigger one, there is always a Flexofold folding propeller to meet your needs for great adventures at sea.Danish qualityAll Flexofold propellers are designed and manufactured in Denmark in a single-purpose factory equipped with modern CNC equipment and robot technology.In 2017, Flexofold was acquired by Yanmar Marine International. However, Flexofold still operates from the factory in Denmark, maintaining its distinct brand identity and remaining a Danish registered company.The propellers are sold directly to boat builders and private boat owners worldwide. Thanks to a flexible production setup, Flexofold can manufacture and ship worldwide within a few days.The new SD15 HubHelical gearing between the blades ensures a synchronized folding mechanismProtective cover over the gearingEasily replaceable anodeLarge shock absorbers for quiet opening of the propellerSpecial inner hub to protect the saildrive and gearbox from propeller impactMounting screws are pre-applied with Loctite® for mounting above as well as under waterWater lubricated - no need for maintenanceThe original SD15 hubThe main difference between the old and new hub is the design.The new hub requires more raw material to create a larger diameter at the base.To make room for the blades, a lot of raw material is removed and recycled, making this hub more expensive than the old design.The features of the old and new hub are the same, so you can still enjoy the many benefits of a Flexofold folding propeller.Technical Features / SpecificationsAvailable in 3-blade or 4-blade configurationsDesigned for SD15 saildrivesCompatible with high horsepower engines (tested with Yanmar 4JH110 110 HP and 4LV150)Low drag, high speed, improved safetyManufactured in DenmarkHelical gearing for synchronized foldingProtective cover over gearingReplaceable anodeLarge shock absorbersSpecial inner hub for saildrive and gearbox protectionPre-applied Loctite® on mounting screwsWater lubricated, maintenance-free