Model- B

General use propeller although specifically designed to run significantly smaller diameters than most other props. The B-Model runs very well on a 582/2.58 as a three blade 60" for example, and can out produce our competition even when running much smaller diameters. Maximum possible diameter with this model is 65".

Model C

 Designed specifically for powered parachutes as a three blade 64" on a Rotax 582/2.58, this design works well on Rotax 447's through Rotax 618 as well as the Hirth engines that fall between 40 and 80 horsepower. This is the propeller being sold as standard equipment on 6 of the top 7 ppc's. Maximum possible diameter with this model is 69".

Model E

This is our smallest propeller - designed for engines between 15 and 30 horsepower. These narrow blades allow for a maximum possible diameter of 53". Backpack ppc's are the target of this design although the blade has been proven very efficient on many older, fixed wing airplanes with diameter restrictions. This is the ONLY pitch adjustable prop available to backpack units.
 

Model F

 This is our largest propeller - designed for larger two-stroke engines that use the higher gear reduction ratios and horsepower up to 115. This prop runs beautifully on a Rotax 503/3.47 as a three blade 66"-70". A two place Kolb can't squeeze any more efficiency out of a 503/3.47 than with our F-model 68" prop. This prop is also the finest prop available for the Rotax 912, 912S, and 914 engines. Maximum possible diameter with this model is 75".

New! 2, 3, 4, & 5-Blade Apex Series Hubs

The new Apex series, fully ground adjustable hubs are the finest crafted hubs available to the ultralight and experimental market. Made in-house on our new Haas VF4 CNC vertical milling station, these hubs offer features that are unavailable on other hubs. By nature of the fact that we own the machine, we can take the time to pack features into these hubs that we couldn’t afford to buy from an outside vendor. They are highly sculpted solid 6061-T6 aluminum and are made to the finest CNC machining tolerances in the industry. In fact, we specifically designed the machining process to insure a perfectly balanced prop hub. The hubs are anodized to a luxurious black finish you will be proud to display. It takes longer to make Apex hubs, it’s true, but there is no comparison between these hubs and any other offered by our competition.

The multi-blade configurations offered with the new Apex hubs allow us to take advantage of the large reduction ratios offered by Rotax and Hirth in their gearboxes. Also, more horsepower can be loaded into more blades so this may be a solution to some applications that have limited room to turn a propeller. 

New! Our Haas VF-4 CNC vertical milling station

We are certainly proud of this development. It is the new Haas VF-4 CNC vertical milling station we purchased to further the research of a new method of composite construction. Coupled with the latest versions of Solidworks cad software and Mastercam toolpath generation software, we have added an immense research and development capability to our product line.  We hope to make blades with this new process soon but in the meantime, we developed our new Apex series hubs. The photo above is our press release featuring this new capability.