Composite Ground Adjustable Ultralight & Homebuilt Propellers.

Being an aviation engineer and professional light aircraft designer-builder, I test, fly and compare different propellers fo my and my client's aircraft from 1987 year. I used composite, wooden, plastic and metal; constant pitch, ground and inlight adjustable; constant and variable RPM propellers not only for aircraft but also for hovercraft, airboats etc. Working in Europe and Nort America, I think I tried almost all prop brands existed here, and was selling many of the brands. From 2006 year, I don't use anything but KOOLprop. My opinion - this is just the best propeller for most prop driven crafts regarding its quality, efficiency and price. Most of my clients using KOOL have the same feeling. Read below about

KOOLprop - just the best!

KOOLprop is designed and made for different airscrew driven vehicles, included PPC and PPG, airboats, hovercraft, Ultralight and Light Sport aircraft. There are 16 different prop blade models for different applications, right and left hand rotation, pusper and tractor, from 47” to 73” diameter. As a standard, they have 3 blades but 2,4,5 blade hubs are available too. You can use them with a lot of engines from Simonini PPG 18HP to powerful Rotax 914 and Subaru-Suzuki-Honda autoconversions up to 180HP. Special reinforced blades can be ordered.

KOOLprop design can be compared with Kievprop which is well known in North America. For example, Koolprop has exactly the same hub design, CNC machined with D16T aviation aluninum and anodised. You can use your old Kievprop hub and spinner with Kool blades. I used both Kool and Kiev and can compare them. There are some points making Kool preferable for me. They are both hand-made with highest accuracy but KOOL prop is made with carbon-glass composite instead of fiberglass. Kool blade is more rigid, it helps reducing idle wobbling and vibration. Its finish is epoxy gelcoat (not paint), more hard and smooth. As Kiev, Kool has integrated strong leading edge protection, but it is made with stainless steel (not copper). It looks more beautiful (always shiny) and it is stronger than Kiev LE. This thick metal LE makes KOOL preferable for Anphib and Float planes as well as STOL and Bush planes flying from unprepared runways - ideal protection against water splashes, tall grass, dirt, tiny rocks etc.

All blade models are designed using computer technologies, then tested in an air tunnel and in flight + passed special destructive tests. Kool blade is straight, classical-style. It makes its blade a little more efficient than the same diameter scimitar-style one. It could be important, especially if you are restricted in diameter. Some Kool models have ant vortex blade tips like wings of modern airplanes. Some of them are straight or semi-oval, depends on which tip is more efficient for this model. Koolprop standard set included 3 blades, hub, all hardware, pitch protractor and soft blade covers. Finish is excellent black gelcoat. All blades have white tips now as a standard for more safety. Running black prop disk is almost invisible, white tips make it visible. Kool can be ordered with white or black carbon-fiberglass 8”diam 9” length spinner (strongly recommended for tractor applications) and 60mm (2.25") hub spacer.

This propeller was used for all aircraft made by Air Trike Enterprises from 2006. About 100 propellers were sold separately for 4 years. They are used for many types and models of airplanes, trikes, PPC, PPG, Gyros, hovercrafts and airboats all over the world. If my client brakes one, two or all blades, he sends me the serial # of the blade printed on its root, and Air Trikes supplies a spare blade to him already balanced to his blades. All of KOOLprop users mentioned that this prop is more smooth, silent, and provided better performances than their previous brand of propellers. To see more pictures and read some feedbacks from pilots using KOOL props CLICK HERE.

	Koolprop specifications. - Diameter 47"-73" - Maximum blade width 5.8" - Maximum speed of rotation 3000 rpm - Power of engine 18-180HP - Range of operation temperatures +55 -20C* - Stainless steel integrated LE protection. - Available in left and right hand rotation, for pusher and tractor plane.
A design description + assembling and installation instruction for this prop is HERE.

Koolprop has highest quality but very reasonably priced. We are always ready to help you with the best propeller choice. If you need a prop - call us or better send E-mail with the following info: engine type, HP, max power RPM, reduction ratio, max possible prop diameter, rotation direction, type of your aircraft, cruise speed. We usually have most propeller models in stock and can send the same or next day after your payment.

PRICELIST IS HERE.

For additional information and order E-mail: info@airtrikes.net, taravas@mail.ru Use both addresses. Even if there are temporary problems with one, we will get your E-mail anyway.
Address: Air Trikes Enterprises
2241 Place de Belvedere
St. Lazare Quebec J7T2B1 Canada
Phone: (450) 202-7772