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Hobbyking Avios Grand Tundra - FlyingGiants Review
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With flaps at roughly 45-degrees, the Grand Tundra flew slowly and exhibited no bad habits.
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Inverted flight was uneventful and required slight down elevator.
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Look at that gear! We purposely flared the Grand Tundra a few feet off the ground to test the gear and tires. They didn't disappoint.
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The GT looks right at home on this rough field.
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Flaps down, slow and dirty pass with the GT.
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The EPO airframe of the Avios Grand Tundra. It's available in green/gold, and blue/silver.
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The Grand Tundra features plug-in wing connections to make assembling in the field a painless affair.
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The vertical stab. The rudder and elevator servos are pre-installed and metal geared for long term durability.
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The bottom of the fuselage has plastic mounts for the landing gear and optional floats. Note the standard air exit holes in the rear of the fuselage, which direct cooling air out efficiently.
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The included Aerostar 60A ESC. It's reversible for precise taxiing on the water with the optional floats.
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A look at the included Turnigy Aerodrive SK3 5045 500kV motor. It can swing a large 17x8 for 4S or 16x8 for 6S battery configurations.
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The wings are setup with flaps capable of 90-degree deflection. All servos are pre-installed and the only requirement is installing the pushrods.
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The rudder and elevator halves.
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Huge balloon tires with black painted wheels are standard on the Grand Tundra. They are spongy foam and quite functional at absorbing a hard landing, especially when coupled with the sprung main landing gear.
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A pair of props are included: 17x8 for 4s and 16x8 for 6s power setups.
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The steel main gear assembles quickly.
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Lots of hardware is included such as the main and tail spars, main struts and tail struts, fasteners, rubber bands for the sprung gear, a belly mounted HD camera mount, pushrods, and plenty of other goodies.
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The tailwheel assembly mounts easily with a pair of screws. Use needle nose pliers to attach the springs.
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With the main gear installed, wrap two rubber bands on each leg. You can make the spring resistance harder or softer with the number of wraps you make with the rubber bands.
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The Grand Tundra is sitting on it's landing gear and ready for final assembly.
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The main wing struts assemble with eight machine screws. Be careful not to over tighten the screws, as you could shear the head.
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The horizontal stabilizer and elevators are installed, and pushrods connected.
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Here we see the rudder installed in the vertical stab and pushrod in place.
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The aileron pushrods are ready for service.
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The Avios Grand Tundra is ready to fly.
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I decided to mount the 17x8 propeller and utilize a 4s 4000mAH LiPo.
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The sprung landing gear a quite soft with minimal wraps of the rubber bands. You can add more wraps to increase stiffness to your liking.
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The vortex generators will definitely keep clean air flowing back to the ailerons; a characteristic that's great for slow speed maneuverability.
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The Avios Grand Tundra comes with pre-installed nav lights and landing lights.
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Landing lights on, flaps down.
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