Technical Info

 

MAIN FRAME:

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The center body section of the HydroCar is built around a space frame and roll bar constructed completely from 304 stainless steel.

 

SPONSON FRAMES:

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The articulating sponsons, which become the vehicle’s fenders while in land mode, have frames fabricated entirely from 6061 aluminum.

 

OUTER SKIN:

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Both the center body section as well as the side sponsons are covered with a 5086 marine-grade aluminum skin. The wall thickness is .125".

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The front wing as well as the roof mounted wing and air scoop are also fabricated from 5086 marine-grade aluminum with a wall thickness of .090".

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The auxiliary sponsons are constructed of .125" wall thickness 5052 aluminum and are braced with aluminum bulkheads for added strength.

 

FLOATATION FOAM:

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The center body section has closed-cell urethane foam added to many open areas within the wheel wells to aid in the floatation of the craft.

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The articulating sponsons are filled with marine-grade cavity-filling foam from RHH.

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The auxiliary sponsons are filled with closed-cell urethane foam that can easily be removed or installed to change the floatation characteristics of the craft.

 

ENGINE:

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The HydroCar produces power from a fully dyno-tuned World/Merlin all-aluminum roller-cammed 572 cubic inch Chevrolet engine, producing 762 Horsepower @ 5,800 rpm and 712 Pounds of Torque @ 4,200 rpm.

 

ENGINE COMPONENTS:

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A 16" x 3" K&N high-flow air filter supplies the carburetor with adequate air flow.

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A single AED 1050cfm "Pro-Street" Dominator carburetor feeds the engine.

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The intake manifold and valve covers have a show-quality polished finish.

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The crankshaft is a 4340 forged Eagle unit.

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The connecting rods are Eagle H-beam 4340 with L-9 bolts.

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The pistons are Mahle-coated by Manley.

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The piston rings are by Total-Seal.

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The bearings are Clevite H-bearings.

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The camshaft is a Comp Cams hydraulic-roller with .647 lift on the intake and exhaust.

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The valves are Manley Race-Masters. The intake is 2.300" and the exhaust is 1.880".

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The rocker arms are made by Scorpion.

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The oil pump is a high-volume unit made by Melling.

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The Moroso oil pan is a high-capacity design.

 

ENGINE ELECTRONICS:

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The distributor is an MSD billet marine unit.

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The ignition controller is an MSD 7-ML-2 Pro Race Marine unit.

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The ignition coil is an MSD HVC-2 unit.

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The charging system comprises of an MSD 5111 APS 160-amp one-wire alternator.

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The starter is a 3-horsepower high-torque MSD 5095 unit.

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The main battery is an Optima D31T with 900 cold-cranking amps.

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The auxiliary battery is a Bosch 78/77B with 770 cold-cranking amps.

 

 ENGINE COOLING:

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The all-aluminum, multi-core Afco radiator measures 18.5" x 35.5" x 6" and is mounted in the front compartment.

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The radiator transfer tubes tie into two of the main stainless steel frame rails, running from the front compartment to the engine compartment.

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The radiator has a custom made shroud with dual 16" diameter electric fans.

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Under the engine there is an auxiliary coolant tank, which contains an additional three gallons of coolant to increase the overall coolant capacity.

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Below the craft there is a completely enclosed, 3 gallon, 16 tube, all-aluminum keel cooler, so the HydroCar will never have an overheating problem.

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A Derale 15820 8-pass oil cooler complete with a 10" cooling fan aids in the cooling.

 

EXHAUST SYSTEM:

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The exhaust begins with JBA large-tube stainless steel headers and a titanium coating.

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There are dual 3" stainless steel exhaust tubes – outfitted with two expansion bellows on each side, covered their full length in exhaust wrapping by Thermal-Tec.

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Dual Supertrapp 3" stainless steel racing mufflers keep the sound level to a legal limit.

 

 TRANSMISSION:

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The power is transmitted through a fully manual Quadzilla 4L80-E 4-Speed racing automatic transmission specifically built for the HydroCar by Performance Automotive & Transmission Center.

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A Derale 13720 8-pass transmission cooler complete with a 10" cooling fan helps to cool the transmission fluid.

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A B&M Magnum Grip Street Bandit shifts the transmission.

 

TRANSFER CASE:

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Behind the transmission is an Atlas fully gear-driven transfer case splitting the power to the front wheels for LAND MODE or to the prop in WATER MODE.

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Levers up front also let the driver select both front and rear driveshafts simultaneously during launchings or landings to make entering or exiting the water much easier. The low-range ratio is 3.0:1.

 

AXLES:

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The front axle is a Currie Enterprises RockJock all-aluminum Dana 60 with a 3.54 ratio. It houses a Dana limited-slip, heavy-duty shafts steel and aluminum one-ton F-350 Ford style axle hubs with six half-inch studs on a 6.5" bolt circle for the wheels.

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The rear axle is a straight type with an open center for propshaft clearance. It is also equipped with one-ton axle hubs and six half-inch studs on a 6.5" bolt circle for the wheels.

 

DRIVESHAFTS:

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The custom-made three-piece 3" FleetPride driveshaft, powering the front axle, features heavy-wall construction and 1350 series U-joints for strength. There are also three pillow-block supports, which help to keep everything aligned properly.

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The rear propshaft is also a custom-made 3" FleetPride unit, powering the Arneson Surface Drive. The propshaft uses 1410 series U-joints.

 

SUSPENSION:

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Both the front and rear axles are supported by three Firestone Ride-Rite air bags on the top for suspension in LAND MODE and two air bags on the bottoms to raise them in WATER MODE.

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Stainless steel 4-links and stainless steel panhard rods locate both axles.

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There are two Sensa-Trac shocks at each corner of the vehicle, yielding a total of eight.

 

WHEELS AND TIRES:

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The wheels are Alcoa forged, polished aluminum 17" x 8" rims with eight round holes.

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The tires are P265/70R17 Michelin LTX Mud and Snows.

 

BRAKES:

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The brakes are Stainless Steel Brake Corporation’s Elite aluminum 4-piston calipers clamping onto plated and vented rotors on all four corners.

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There is one cable-actuated auxiliary driveshaft brake for the front axle.

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There is one cable-actuated auxiliary propshaft brake for the prop.

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The brake lines and brake line fittings are all stainless steel from Classic Tube.

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There is an auxiliary brake vacuum pump by SSBC, to make sure there is always plenty of vacuum in the braking system, even when the car isn’t running.

 

FOUR-WHEEL STEERING ON LAND:

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The steering operates through a single Flaming River stainless steel tilt column, with a heavy-duty chain drive engaging two Superwinch locking hubs, mounted below the dash, enabling the driver to select the front axle steering, the rear marine drive steering or both at the same time for launching and landing.

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The steering box is a Flaming River manual unit for the front axle.

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The rear axle utilizes an electric actuator for the rear steering. The front and rear axles may be turned independently of each other, so they can be used to either decrease the turning radius or ‘crabwalk’ the HydroCar to either side. (It’s great for parallel parking.)

 

WATER PROPULSION:

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The ‘750-Horsepower-Upgraded’ version of the ASD-6 Arneson Surface Drive, from Twin Disc is equipped with a 1.56 ratio gear-drive for reliability.

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The Rollo 6-blade, stainless steel propeller measures 17.5" Diameter with a 22.5" Pitch.

 

TRIM:

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The trim pump is a 12-volt electric/hydraulic Parker unit delivering the fluid through high-pressure stainless steel braided lines to the trim cylinder.

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An extra long trim cylinder was custom fabricated by Nu-Way Hydraulics to enable the Arneson Surface Drive to be raised adequately for driving on the street.

 

MARINE STEERING:

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An engine driven March compact power steering pump and remote reservoir, powers a Char-Lynn hydraulic helm unit for effortless steering on the water.

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The fluid transfer is handled through Parker and high-pressure stainless steel braided lines to the steering cylinder.

 

INSTRUMENTATION:

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There are twenty-five VDO Cockpit instruments on the dash.

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The three instruments over the steering wheel include a programmable speedometer for the land, a tachometer and a pitot speedometer for the water.

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Other VDO instruments include, oil press, oil temp, water temp, trans temp, engine vacuum, brake vacuum, voltmeter, ammeter, left fuel level, right fuel level, rear axle steering angle, Arneson Surface Drive trim angle.

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In addition, there are ten air pressure monitors, including the main air pressure, regulated air pressure, sponsons up air pressure, sponsons down air pressure, axles down air pressure axles up air pressure, auxiliary front axle air pressure, auxiliary rear axle air pressure, sponson doors open air pressure and sponsons closed air pressure.

 

CONTROLS:

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Below the instruments are the three levers that control the sponsons, (up and down) the axles, (up and down) and the wheel well doors, (open and closed).

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There are forty-five Oslo Controls and switches to activate all of the systems.

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There are 16 LED indicators for the sponson doors, so the driver can be sure that they are fully opened or fully closed.

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The steering wheel is a Flaming River 13.8" Revolution.

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There are two Superwinch locking hubs under the center of the dash to select the steering between the front axle, the marine drive, or both.

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A B&M Magnum Grip Street Bandit shifts the transmission.

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There is a horn button for the electric horn and a lever for the air horns under the dash.

 

LIGHTING:

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The headlights are hidden. They are raised and lowered with the touch of a button located inside the cockpit.

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The headlights are Hella Xenon Blue bulbs.

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The taillights have double sockets in each position, so there are a total of twelve bulbs in the rear assemblies. These include four amber turn signals, four red stop lights and four white reverse lights.

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There are no side marker lights.

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The radiator compartment has two lights.

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The front suspension compartment has four lights.

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The passenger compartment has two lights.

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The engine compartment has six larger lights.

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The rear suspension compartment has four lights.

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There are also three Navigation lights – Red on the Port side, Green on the Starboard side and a Clear one for the Stern light.

 

SAFETY:

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The Superwinch locking hubs that are used to engage the steering shafts are safety-rated for a 1-Ton truck axle, so there is no chance of failure.

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Every piece of glass on the HydroCar is PGW Solex laminated glass for added comfort and safety.

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The car is equipped with Deist 4-Way seat and shoulder harnesses on both seats.

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There are two fire extinguishers mounted in the cockpit, behind the seats.

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There are two safety latches on each door, the hood and the rear deck hatch.

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There are two stainless steel safety pins in the front of the rear deck to make sure it doesn’t open at the wrong time.

 

 

 

 

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