Even if an engine and propeller shaft are perfectly aligned when the vessel is built, maintaining that alignment when the engine is running and the vessel moving is an impossibility.
What makes SigmaDrives different is their ability to resist
propeller thrust when installed as a standalone coupling, directly from the
shaft to the output flange on the engine’s transmission. It reduces and even
eliminates vibrations that originate from an imperfect alignment between the
propeller shaft and the engine, compensating for up to 3 degrees in all
directions. This system can also be installed using thrust bearings so that the
engine can be placed utilizing the space available ergonomically.
Sigma Drives are designed to fit virtually all
boats from yachts to workboats, canal narrow boats to military vessels; in fact,
pretty much any powered vessel with engines up to 1300hp. They are extremely
easy to fit, requiring no modifications to the craft, which can usually be
equipped with the drive unit while still in the water. Together with its
anti-noise and vibration abilities having a SigmaDrive on your vessel also
ensure that seals and bearings are always perfectly aligned, reducing wear and
guaranteeing a longer trouble-free life for all associated components. For
more information on SigmaDrives please see our catalogs and download page.
Questions? 866-790-7767 or email us at firstname.lastname@example.org