We Perfected the Art of Marine Propulsion
It was in 1960
that the Berkeley Pump Company introduced its first Berkeley Jet Drive system for marine
applications. Since then the Berkeley Jet Drive has become the standard for the jet
drive industry, a recognized leader in innovation, technology and quality.
During this time, the Berkeley Jet Drive has been widely accepted among all facets of
the recreational, performance and commercial boating communities. Because of its
uncomplicated design and relatively few moving parts, the Berkeley Jet Drive has earned an
enviable reputation as a durable and dependable propulsion system with exceptional
versatility. Whether it's transporting workers to an offshore oil platform, running
white water river rapids or cruising a peaceful lake, Berkeley Jet Drives are there and
doing the job.
For family
recreational boaters, safety and performance are first and foremost. That's why
Berkeley Jet Drives have been the choice of water skiers and pleasure boaters for nearly
three decades. Ease of operation, responsive acceleration, exhilarating
performance, agile handling and the secure feeling in knowing that you have safe,
propellerless propulsion makes all the difference.
Berkeley Jet Drive .... we didn't invent marine propulsion, but
we did perfect it!
Affordable:
Before
you buy your next boat, consider all of the costs; purchase price .... operating and
maintenance costs .... resale value. When you do, you'll be amazed at how affordable
a Berkeley Jet Drive really is. Why pay more for propulsion systems that give you
less?
Dependable:
The key to
dependability is quality and simplicity .... and Berkeley Jet Drives give you both.
Unburdened by delicate internal gear sets, complicated transmissions and complex steering
assemblies, the Berkeley Jet Drives durability is a legend, allowing you more boating time
and fewer mechanics bills.
Many Berkeley Jet Drives have logged thousands of hours in commercial river running and
patrol boats, and the repairs necessary have been unbelievably low. In fact, one
sheriff's boat logged 9,240 hours and about 140,000 miles of service before it was
replaced by an updated Berkeley Jet Drive of similar design.
On this
patrol boat, repair costs were negligible for nearly four years, and at the time of the
boat's auction, maintenance expenses were calculated at 9¢ an hour, or slightly
more than half a cent per mile for both the engine and Jet Drive.
NO PROP REPLACEMENTS
Very few owners are going to run a Jet boat 100,000 miles .... or have such minimal
maintenance cost over a five year period as this patrol boat. But everyone operating
in waters abounding in rocks, stumps and "sleepers" can, in one season save
hundreds of dollars in damaged propellers, rudders, struts, replacement shear pins, and
similar frustrating underwater damage by turning to Berkeley Jet Drives as their choice of
propulsion.
Freedom from underwater damage, almost as much as the way Jet Drives perform, is what
makes jets more fun to operate.
Faster:
On its first test run in 1960, a Berkeley Jet Drive pushed a 15-ft plywood
hull at 40 mph. In the years that followed, breaking the 100 mile barrier became the
joint goal of Berkeley engineers and some of the best racing designers and drivers.
Berkeley
kept setting new records for jets below the 100 mph mark until Phil Younger at the wheel
of the "Menace", basically a Wreidt hull, was clocked at 104.77 mph at Whiskey
Creek, California, in June, 1970.
In races sponsored by the American Power boat Association and the National
Drag Boat Association, Berkeley has consistently contributed to new records in the jet
class competitions. For example:
Long Beach, March, 1976
SPIT DECISION - Driver: Bob Barron
NDBA Record Holder
139.68 mph
August 1975
Nation's fastest jet boat of the year
GOING PLACES - Driver: Bobby Hall
132.54 mph
August 1974
NDBA Record Holder
ROYAL FLUSH - Driver: Dean Willis
135 mph
October 1971
APBA Record Holder
THE MENACE - Driver: Phil Younger
133 mph
NOTE: The Jet Drives which Berkeley provides qualified racing
drivers are specially selected, strengthened and smoothed to cope with higher horsepower's
and speed. Most production engines and drives are designed for maximum cruising
efficiency (best speed to fuel consumption ratio) of approximately 30-35 mph, and top
speed of 60 mph or below. Competitive racing requires special hulls, accessories and
engines, which are available from a number of specialists.
Maneuverability:
Unlike a
propeller driven boat, Berkeley Jet Drive steers via water thrust delivered from a
moveable steering nozzle. By coordinating the throttle setting and nozzle direction,
a boat can be maneuvered with ease in tight quarters. To back up, simply lower the
nozzle deflector gate and reverse the direction of thrust.
You'll love the instant responsiveness and slippery feeling of a Berkeley Jet Drive.
We take your boating experience to new levels of excitement.
Performance:
Berkeley Jet
Drives are synonymous with outstanding performance. The experience begins with
smooth, powerful acceleration, the kind of pick-up perfect for water skiing and family
boating. At faster planing speeds, enjoy 'torque-free' steering and responsive
maneuverability.
INSTANT ACCELERATION
Jet Drives take off
faster because unlike a propeller driven boat of equal power, the engine can deliver more
"horses" to the jet at no or slow boat speed. There is no hesitation - no
cavitation or churning. (A propeller requires FORWARD SPEED before it can REV UP TO
FULL POWER.) This special attribute of Jet Drives makes them a favorite for getting
skiers up on plane, which it accomplishes in about half the usual time. It also
gives Jet Drives and advantage in drag racing.
Its an exciting new driving sensation. And don't forget that Berkeley Jet Drives
are economical too, low normal operating costs including fuel and maintenance.
Safety:
With a Berkeley Jet
Drive, you never have to be concerned about the inherent danger posed by an exposed
propeller to swimmers or water skiers.
Enjoy boating the way it was meant to be .... fun and safe.
SUPERB HANDLING
Without clutch, gears, or engine strain, Jet Drives can be shifted from forward to
reverse by simply flipping a control that drops a gate across the output stream.
This diverts the water flow through a nozzle that shoots the stream forward and
beneath the hull. Reversing with careful throttling provides excellent slowing and
stopping, with no abnormal strain on the engine or drive. At reasonable speed, if
the engine is revved the boat will come to a stop in little more than its own length.
Consequently, this is a feature that must be used wisely, especially at high speed.
A panic stop can be made when faced with a major emergency.
WALKING THE BOAT
Another advantage of Jet Drives is that with a little practice you can walk the boat
sidewise into a tight berthing situation by giving the throttle short bursts as you shift
from forward to reverse, and steer slightly.
SHARP
TURNING
With a moderate deep-vee hull, Jet Drive boats "U turn" in a much shorter
radius than a prop/rudder boat. This is particularly desirable in covering your
downed skier in active waters, or in an emergency.
STEERING
The first time one handles a jet boat there is a tendency to do so gingerly, since
throttle response is so instantaneous as to be unexpected and startling. As you move
away from the ramp or pier, set the throttle at a little above idle so the jet stream
provides ample thrust. To make minor course corrections, turn the wheel gently; and
if necessary, nudge the throttle to enhance the turn. A few maneuvers carried out in
this manner will give you a sense of the timing with the Berkeley Jet Drive, and you can
then accurately judge the reaction of the boat to your movements of the wheel, throttle,
or reverse.
The standard rudder now supplied with the Jet Drive assists steering at slow speeds,
and provides some heading control with power off. The rudder extends only a couple
of inches below the bottom of the boat, and is not the primary steering control. It
is carefully shaped for minimum drag.
DOCKING
Jet boats dock more smartly than any other, especially against strong current or wind.
With a Jet Drive you can use reverse in tight berthing situations to perform
maneuvers impossible with other types of power.
Shallow Water Operation:
Underwater
hazards are often unavoidable. However, with a Berkeley Jet Drive submerged
objects and shallow water operation becomes less of a concern since there are no
appendages like propellers, rudders or drive units beneath the hull that can be damaged.
Simplicity:
If it was any more SIMPLE .... it wouldn't
have moving parts
At a time when everything seems to be getting more complicated, it's a refreshing
change to understand just how simple a Berkeley Jet Drive truly is. A Berkeley Jet
Drive is essentially a water pump, powered by a marinized automotive engine. The
system creates propulsion thrust by taking water in through an intake in the bottom of the
boat, sending it past an internal rotating impeller, and then expelling the water out
through a nozzle behind the transom. In order to make the boat back-up, a deflector
gate is lowered over the nozzle outlet, thus diverting the water flow in the opposite
direction, beneath the hull toward the bow. To steer, the nozzle swivels to the left
or right which causes the boat to run in the appropriate direction.
Jet Drives are so simple and have so few parts that they offer extra-ordinarily long
life. The rotating element of the Jet Drive is a shaft with two bearings and an
impeller. What could be simpler? The reverse/forward control is a gate with
two bearings. Steering consists of a nozzle with two bearings. All of the
bearings are water lubricated, except the thrust and tail bearings, which need a little
grease or oil once in a while.
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