UltraProps.com

hovercraft_reduction_drive.jpg (220516 bytes)

Belt Reduction Drive

A rugged belt reduction drive designed for air-cooled engines, including the popular Predator  11 HP,13 HP to 22 HP, Honda 13 to 20+ HP, and Briggs Vanguard and Subaru 10 to 40 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, when compared to direct-drive.  Comes with Rotax 75mm bolt circle pattern for 5/16 inch prop mounting bolts. 8.6" propeller center offset from PTO shaft center.

Cost is $895 USD, plus shipping

reduction_drive3.png (6061035 bytes)

reduction_drive1.png (229920 bytes)

low cost low hp reduction drive speed reducer bolt-on reduction drive unit small hp belt drive low cost reduction

Compact, Efficient, Engine Reduction Drive, Propeller Air Drive Combinations For Airboats and Hovercraft

1) You supply 22 HP Harbor Freight Predator Engine-4,000 Max. RPM (cost under $600)
Add our bolt-on 1.65 to 1 belt drive--$895
Add our 60 inch 2-blade  Ultra-Prop II with adjustable pitch--$350
95+ pounds thrust typical at full throttle.
--------------------------
2) You supply 22 HP Harbor Freight Predator Engine-4,000 Max. RPM (cost under $600)
Add our bolt-on 1.65 to 1 belt drive--$895
Add our 36 inch 3-blade Ultra-Prop II with adjustable pitch--$400
85+ pounds thrust typical at full throttle.
---------------------------
3) You supply 13 HP Harbor Freight Predator Engine-3600 Max. RPM (cost under $400)
Add our bolt-on 1.4 to 1 belt drive--$895
Add our 36 inch 2-blade Ultra-Prop II with adjustable pitch--$350
65+ pounds thrust typical at full throttle.

---------------------------
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 act as the engine governor, to limit full throttle maximum engine RPM .

 

Contact Telephone Numbers:

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

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

Ultra-Props Suggestion / Quote Form Here

Ultra-Props Order Form Here

Contact Telephone Numbers:

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

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

 creditcardsymbols p
JCB.jpg (2502 bytes)

Or pay by Bank Wire Transfer World-Wide

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.

Copyright 2017