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Hoverhawk

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We sell WORLD-WIDE, easy-to-assemble Propulsion kits in easy-to-ship component packages and bolt-on belt reduction air drive units. We continue to expand our line of products to serve our customers' needs.

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Our Belt Reduction Drive !

A rugged belt reduction drive designed for engines, including the popular Predator 13 HP to 22 HP, Honda 13-20 HP, and Briggs Vanguard 10-35 HP engines. These engines are commonly used on hovercraft and small airboats. This drive comes ready to install on your engine. Developed specifically for the harsh marine environment. It is designed for engines up to 40 horsepower which turn 3600 to 4000 RPM maximum, and is constructed primarily of aluminum and stainless steel for durability in a wet environment. The cogged belt is quiet, efficient and doesn’t slip when wet. The muffler on some engines may have to be re-located or modified to provide clearance for this redution drive to mount. Specify 1.4  or 1.65 to 1 reduction ratio. A reduction drive unit allows use of a larger diameter propeller, turning more slowly, for more propeller efficiency (more thrust per HP) and quieter operation.  Comes with Rotax 75mm bolt circle pattern for 5/16 inch prop mounting bolts.

Cost is $895 USD, plus shipping

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Compact, Efficient Engine, Reduction Drive, Propeller Air Drive Combinations For Airboats and Hovercraft
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1) You supply 22 HP Harbor Freight Predator Engine-4,000 Max.RPM (under $600)
Add our bolt-on 1.65 to 1 belt drive--$895
Add our 42" 3-blade T5 fan with adjustable pitch--$295
90+ pounds thrust typical at full throttle.
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2) You supply 22 HP Harbor Freight Predator Engine-4,000 Max.RPM (under $600)
Add our bolt-on 1.4 to 1 belt drive--$895
Add our 36" 3-blade T5 Fan with adjustable pitch--$295
82+ pounds thrust typical at full throttle.
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3) You supply 13 HP Harbor Freight Predator Engine-4,000 Max.RPM (under $400)
Add our bolt-on 1.4 to 1 belt drive--$895
Add our 31" 3-blade T4 Fan with adjustable pitch--$225
52+ pounds thrust typical at full throttle.
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NOTE: If you have a Honda, Briggs & Stratton or other engine of similar HP, but limited to 3600 RPM redline, it is best to choose our 1.4 to 1 Reduction Ratio
Reduction Drive System. Blade pitch can be adjusted as needed to match/load your actual engine power.

An engine tachometer is needed to set your blade pitch to its optimum. Disable the engine governor then set/adjust the prop/fan blade pitch angle of attack to limit full throttle maximum engine RPM to act as the engine governor.

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CONTACT US or email: hoverhawk(at)gnt.net

   

Contact Telephone Numbers:

1-251-609-0969 in United States
+251-609-0969 outside United States

CONTACT US or email: hoverhawk(at)gnt.net

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Prices, specifications, and availability are subject to change without notice. Products and materials advertised on this website are sold with the understanding that the buyer assumes all risks and hazards involved in their use or application. Buyer/User acknowledges assumption of all risks, hazards and further indemnifies seller by purchasing and/or using or reselling the products advertised and sold on this website. No express or implied warranties asserted nor fitness of merchantability claimed by Seller.