NEW!!! E-Flite UMX Extra 300 3D BNF!!!!! - RC Groups
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Oct 21, 2010, 08:50 AM
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DFflyer's Avatar

NEW!!! E-Flite UMX Extra 300 3D BNF!!!!!

UMX Extra 300 3D BNF by E-flite

Key Features

* An ultra micro that's ideal for indoor 3D flight
* Completely built and flight ready—just bind to any DSM2™ aircraft transmitter with dual rates and expo
* Includes a Li-Po flight battery and DC Li-Po charger
* Small and light enough for experienced pilots to fly almost anywhere indoors


The Ultra Micro eXtreme (UMX) Extra 300 3D makes the dream of a 3D plane you can fly almost anywhere a reality. With a flying weight of barely over an ounce (just 33 grams), battery and all, it is slow and light enough to fly extreme 3D maneuvers in spaces no larger than a dining or conference room. Its ingenious laser-cut foam airframe, designed by ETOC champ Seth Arnold, makes it all possible.

The structure uses a fraction of the foam material usually used in profile planes of this type and is covered with micro-thin film. The airframe is reinforced with carbon fiber rods that keep flexing and twisting to a minimum so you can fly the most aggressive 3D maneuvers with absolute precision. Optional Side Force Generators are also included. These razor-thin pieces of foam slide onto the leading edge of the wing and enhance rudder authority in knife-edge flight. They improve tracking during precision aerobatics too.

The UMX™ Extra 300 3D BNF comes completely assembled with a punchy 8.5mm coreless brushed motor and Spektrum™ AR6400L Ultra Micro DSM2 Receiver/ESC installed. Built-in long-throw servos on the AR6400L drive the elevator and rudder while two independent Spektrum AS2000L long-throw ultra micro servos drive the ailerons. A 1S 3.7V 150mAh Li-Po battery and DC Li-Po charger are also included. For best performance, a DSM2 aircraft
transmitter with dual rates and expo is recommended.

More Info -

E-flite UMX Extra 300 3D BNF.wmv (1 min 10 sec)
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Oct 21, 2010, 10:50 AM
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lazor 22's Avatar
Look like the replacement to the 4-Site. But... it's brushed....... :/
Oct 21, 2010, 11:36 AM
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wattman's Avatar
Its just amazeing , we almost have a full house ,powered paper airplane
We used to fold paper airplanes and throw them , now we can fly them radio controlled and powered , and do 3D stunts .

It just keeps getting better

Way to go HH
Oct 21, 2010, 11:54 AM
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Will it be available in pnp?
Oct 21, 2010, 11:56 AM
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DFflyer's Avatar
As of now no, maybe in the future but their website doesn't list a PNP right now.
Oct 21, 2010, 12:18 PM
Registered User
looks good but its brushed
Oct 21, 2010, 04:31 PM
Aerobatic Fanatic
HugoCraft's Avatar
Looks really good but I thought it would be alot lighter than the m4-site. The specs shows a 3g difference which translates to 10% lighter.
Oct 21, 2010, 04:41 PM
Doug Cronkhite's Avatar
So it's brushed.. So what? The new Beast is a 2s brushless setup if you just have to have brushless. Looks like it flies really well like it is.

Nice job Seth!
Oct 21, 2010, 04:54 PM
Aerobatic Fanatic
HugoCraft's Avatar
but the beast is

not 3d
not indoor
Oct 21, 2010, 05:35 PM
Doug Cronkhite's Avatar
Which still doesn't answer the question or concern of why the Extra needs to be brushless?
Oct 21, 2010, 05:42 PM
Registered User
Originally Posted by dcronkhite
Which still doesn't answer the question or concern of why the Extra needs to be brushless?
it doesnt need to be brushless but for the price you would expect it to be and also I would think a brushless motor would be less weight.
Oct 21, 2010, 06:45 PM
Xpress..'s Avatar
The Brushed setup is already light. Going with a brushless setup you have to add in another ESC, because the unit doesn't have brushless on it yet, so you're really adding more weight with a brushless. A plane this small and light can be severely affected by that.

Also, as for a PNP, that's a negative, as it would not include the AR6400 brick unit which has elevator/rudder controls on it, and it would not have an ESC or light enough receiver.

In other news, it looks like it flies fantastic, seems a lot floatier and more powerful than the 4-site.
Oct 21, 2010, 07:27 PM
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HugoCraft's Avatar
under the parts listing its the same motor, prop, and gear box from the um-4-site. The AR6400L has an "Integrated brushed speed control" but also is "Compatible with external brushless speed controls (optional)"

But i think it will fly alot better than the 4site.
Oct 21, 2010, 08:34 PM
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lazor 22's Avatar
^^They could use the new AR6400LBL and you don't need a external ESC. Only thing I could think of is the batteries would weigh more, but on a 2S set-up it doesn't really matter cause you would have much more power then the pack weight would use.
Oct 21, 2010, 08:46 PM
Registered User
DFflyer's Avatar
But then it wouldn't be as floaty and the extra weight would make it have to fly faster which in-turn would make it harder to fly indoors - and that's the whole point of this plane.

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