Quiet vibration-free performance from today’s high-revving diesels AQUADRIVE VIBRATION CONTROL COUPLINGS The ultimate contribution to peace and quiet on board One of a series of brochures on products from Halyard 2 ISSUE 2

An Aquadrive system will reduce structure borne It will end shaft alignment It will allow the engine to be installed flat, because the Aquadrive allows angles between the engine and the shaft. It will ease problems when re-engining. And it's a gift when re- engining an older boat. Marine engines traditionally have been coupled directly to the propeller drive shaft, perhaps with a stiff flexible coupling between the two. Most of the vibration is sent straight down the shaft, and the engine mounts can't do their job properly because they are strained forwards by propeller thrust. So vibration gets...

Moduline Aquadrive The new Moduline range. Twenty years of development has produced a completely new range with less weight, less length, more power the original concept. The Aquadrive special drive shaft has been up- rated to take more power. The thrust bearing assembly is now cast from specially treated alloys to reduce weight. The shaft coupling is hidden away inside the thrust bearing to reduce length and weight Long shaft Aquadrives Systems with longer Aquadrive special drive shafts allow the engine position to be varied enormously. Shafts up to 4 metres long allow engines to be raised or...

How does it solve shaft alignment problems? Marine engines are supported on timber or steel bearers fixed into the hull. These bearers are positioned to allow the engine to line up roughly with the shaft. The engine is then adjusted on its mounts so that it lines up with the propeller shaft coupling within a few thousands of an inch. All this takes hours of painstaking work. And then when you launch the boat, or tighten the backstay on a yacht, it all moves slightly and needs The Aquadrive changes all the rules. The propeller shaft fits into the Aquadrive's thrust bearing, which is fixed firmly...

WHAT'S INSIDE AN AQUADRIVE? The Aquadrive has four main adaptor is ready made to couple our drive to your gearbox. Behind this comes the Aquadrive special drive shaft, with a tough constant velocity joint at each end. Then the thrust bearing, engineered to take forward and reverse thrust, and rubber mounted to reduce noise. Finally the shaft coupling, produced for a wide variety of shaft diameters. The thrust bearing is incredibly tough and built with races which can be replaced even after many years running. Sealed ball bearing races require zero maintenance on smaller Aquadrives. Taper roller...

AQUADRIVE AS DRIVE SHAFTS THE ONLY DRIVE SHAFT IN THE WORLD WITH FREE END FLOAT Aquadrive special drive shafts can be used to connect Jet drives, V drives, thrusters and stern-drives. They remove vibration and take out misalignment in just the same but they have one huge advantage over rubber jointed drive shafts and older universally jointed units - they allow the engine to vibrate No more vibration transmission through rubber joints. No more of the torsional lock-up to be found on shafts with sliding splines in the centre. Just give us details of the craft, power, and length and we'll do are...

AQUADRIVE ENGINE MOUNTS What makes a mount > Only natural rubber is used. Each size of mount is manufactured with up to four different rubber stiffness grades. • The steel hood covers the whole top of the mount, reducing the risk of diesel attacking the natural rubber. The mount is "fully captive". Even if the engine turns over engine is held tight. » The bolt holes are slotted adjust their position. high with a 12mm stud. Four rubber grades are available for The most versatile mount ever, more and available with five different rubber grades. The mount is 50mm high, with a three rubber grades...

AQUADRIVE VIBRATION CONTROL COUPLINGS One of a series of brochures on products from Halyard We must reserve the right to change specifications without prior notice. Halyard and Aquadrive are trade marks. you'd like more help. We're happy to talk Quality Assurance. HALYARD (MARINE & INDUSTRIAL) LIMITED Whaddon Business Park, Southampton Road, Whaddon, Salisbury SP5 3HF, United Kingdom. http://www.halyard.eu.com e-mail: [email protected] All products in this brochure meet the requirements of the Recreational Craft