We ship 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.
Our rugged belt reduction drive unit is designed for industrial engines, including the popular Predator, Honda, Kohler and Briggs/Vanguard and similar engines. These engines are commonly used on hovercraft, small airboats and industrial ventilation systems. 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 and exhaust system 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 or 1.75 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 for up to 28 HP or $995 for up to 40
HP (has wider belt and pulleys, thicker plate)
plus shipping cost.
Email Us Here: hoverhawk (at) gnt.net
Our Belt Drive Unit installed on a HF Predator 22 hp V-Twin using a 3-blade Ultra Prop II Propeller
Our Reduction Drive works well with Ultra-Props too !
Belt Reduction Drive Installation Torque Specifications:
(4) 3/8 inch Backing Plate Mounting SS bolts-15 ft.lbs. or 180 in. lbs.
(6) 5/16 inch Propeller Mounting SS bolts--11 ft.lbs or 132 in. lbs.
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 act as the engine governor, to limit full throttle maximum engine RPM to or just below engine redline.
Go to QUOTE REQUEST FORM
Go to ORDER FORM
Contact Telephone Numbers:
1-251-609-0969 in United States
Email: hoverhawk (at) gnt.net
BACK TO HOVERHAWK HOME PAGE
BACK TO ULTRA PROPS HOME PAGE
SELLER'S NOTICE AND DISCLAIMER
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.