Aquadrive systems reduce noise by transferring
the load of the propeller to the hull so that the engine can
sit on soft vibration-absorbing mounts.
In traditional engine installations, the engine
must be very precisely aligned to the propeller shaft. The
thrust of the propeller has to be absorbed by the engine and
its mounts. These restrictions demand very stiff mounts that
transmit high levels of vibration to the hull. Vibration becomes
The Aquadrive anti-vibration system eliminates
the need for stiff, hard mounts and for careful engine alignment
to the propeller shaft. Instead, the propeller shaft is aligned
to an Aquadrive thrust bearing that is attached directly to
a structural member of the hull. The thrust bearing absorbs
the entire propeller thrust and stabilizes alignment. Constant
velocity (CV) joint shafts transmit engine power to the thrust
- bearing and propeller shaft while allowing the engine to
move in any direction. Super-soft Aquadrive engine mounts
isolate nearly all vibration from the hull.
Aquadrive's steel-hooded mounts are much softer than almost
anything else manufactured, and are fully captive to keep
the engine in place even if the vessel turns over.
Pre-machined gearbox coupling kits allow trouble-free coupling
to almost any marine gearbox transmission. All exposed fasteners
are made of high-grade stainless steel.
Constant velocity (CV) joints allow the shaft to connect the
engine and the main propeller shaft at an angle. The rolling
action of the balls within in the CV joints absorbs all axial
and radial loads.
The thrust bearing is mounted directly into a structural member
in the hull allowing the propeller to push the boat and not
Aquadrive offers a variety of systems designed
for propeller shaft driven boats from 5 to 1500 horsepower.
Aquadrive Systems for Other Propulsion Applications
Some boats perform better and have improved layouts by REMOTE
MOUNTING the engine from the stern drives. The Aquadrive CVT
systems offer unique engineering, which allows variable angles
at end. Compared to U-joint driveshafts, CV axles absorb vibration
instead of increasing it.
Carolina Classic Volvo 28
Twin, Volvo 25 Single
Albemarle (older models) 200+ built Albemarle
Jersey City Master Marine 28 24 - Yanmar to
Zodiac - RIB 24 Volvo Diesel to Stern Drive
Remote V-Drive Boomer DDC 1200 HP 65 Ft. Malcolm L. Pettegrow,
Inc. - Jeff Dickes, Designer
Magpie - Lyman Morse MAN 1200 HP
Cape Horn Trawlers
Hunt 80' - New England Boatworks under construction
3412 1200 HP CAT
Chris Hood - Wasque - 26
Only CV joints can permit uneven or compound angles between
the engine and REMOTE MOUNTED V-DRIVE gearbox. Other driveshafts
require identical angles on each joint and their angles can
not change. Aquadrive's CV joint technology allows movements
and misalignment in every direction. Unlike U joints, there
is no driveshaft vibration and increased design flexibility.
Waterjet U.S. Navy 30 Ft. R.I.B.
Aquadrive CV tubular driveshafts offer the best technology
to connect engines to waterjets. The unique misalignment and
vibration absorbing capabilities of Aquadrive CV joints provide
design improvements. Vibration and noise are reduced, and
machinery arrangements and propulsion system reliability are
U. S. Navy 10 Meter R.I.B.
Hinckley 36 Picnic Boat,
Hinckley 40 Jet Boat, Hinckley 44 Jet Boat
All Ted Hood Whisper Jet
Boats WJ 36, 38, 40, 44, 52 and 55 models.
Zodiac 30 Ft. R.I.B.
Nautica 24 R.I.B.
Winninghoff Aluminum Jet
State of Vermont Ferry -
American Shipyard Corporation, John W. Gilbert Associates,
Inc. , Designers
Aquadrive Product Manual (PDF*)
*You will need the Acrobat Reader which is available free from
Adobe. If you do not have the reader you may download your
free copy here: Adobe Reader (adobe.com)