The Emax Avan Rush propeller 2.5x1.9x3 was designed for Babyhawk Race 2.5 inch conversion kit to maximize performance and flight time. This propeller is matched to Emax 1106 4500kv for 4s or the Emax 1106 6000kv on 3s. A true 1.9" pitch throughout the blade gives a linear control feeling across the throttle band while still achieving high speeds. This allows for ease of flight and more precision. With a special PC blend the Avan Mini weighs 1.25 grams. Utilizing thicker airfoils greatly increases durability and stiffness. Most of the weight is centralized near the hub creating a low moment of inertia of 1.24 grams*square centimeter which in turn makes a very responsive prop.
The Avan Rush was designed from the ground up starting from design constraints such as RPM, air speed, and required thrust. From these constraints aerodynamic models were built to predict performance and to design the blade shape. Highly cambered airfoils were used to achieve high lift coefficients at high angles of attack prolonging stall. This allows for a higher blade angle while still remaining efficient. The cambered airfoils also allow a greater flight envelope making for great low end responsiveness while still being able to achieve high speeds.
A special Polycarbonate blend is used to achieve high durability. This material is incredibly tough and ductile to resist fracture in high impact crashes. A thick blade root was designed to further increase this durability. Our injection mold process is optimized to reduce bubbles in the plastic to increase the strength of the propeller and to maintain superb balance.
AVAN Rush 2.5 inch prop (2xCW 2xCCW) 1 set kit
Geometry: 2.5 inch diameter 1.9 inch pitch 3 blades
Inertial Properties: weight: 1.4 grams Moment of Inertia: 1.24 g*cm^2
After having these props for almost 2 weeks I finally got to fly them and compare them to another popular brand 2540 prop. Compared to the other prop the Avans are, to me, a lot more controllable on the bhr. The speed isn't as high as the other prop but it's close. The control of this prop make me choose it over the pure speed of the other prop. The flight time is close to the same as the 2540, maybe a few seconds less but close. The main thing I noticed with the Avan is in turns the quad is so much more accurate and I can hold a line around a corner much better. I can also hit gates a lot easier as well. Now in a straight you can tell the speed difference but it feels like it's only a few mph slower than the 2540 props. Kudos to emax on this one. I love them. And yes their way more durable than the 2540's as well. I hit the top of a tree and tumbled down a good 40 feet and was able to take right back off and once I got back not a single prop was bent. For a tight technical course these are the props to use, for a course with really long straights use the 2540's.
Also one more thing I noticed. With the 2540's I guess because of the wing tips there's a constant forward pull, I noticed this with all of that brands props that are similar no matter the size, 1.9",2",2.5,3" etc. with the Avan there is no forward pull and I am able to hover without constantly correcting and pitching back. That's a plus for me. Keep up the great work Emax!
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