Once a plane design enters the market, many do modifications. That is an excellent approach to enter into scratch building.

For alpha jet, the high alpha and other traits lead me into putting my touch to see if I can get an higher alpha and perhaps even hover it. Well, guess what, in not only does, those things, but 2 other maneuvers are possible.

I am able to knife edge the jet for short intervals!!! very tricky, hope I can get better at that.

You can actually fly(not launch or land) the Alpha jet using only the left hand stick and hands off the elevron stick.
Back in the old days, you had only 2 channels. Planes were designed to use throttle and rudder. Well, my engine has a slight angle up so when you add throttle, it climbs and when you pull back, it descends. Now ,combine that with rudder and you have a trainer.

I made three changes. 1) increased the overhang and moved it forward. (this will change the CG). 2) Changed the prop to a 7"APC by 3/8 Wide to give it better control and smoothness for the slow motion. I've mentioned these.

3) This is the one that allows all the "stuff" and it is the rudder. I took this idea from my days exploring my design using a F-22 as well as when I was in pattern competition.
So here is what it looks like.
alpha rudder left view.JPG 

This is a view with left deflection of rudder. Notice that the rudder is hinged(taped) to the rudder frame and then floats free(in the channel) so when you when you have deflection, the airflow from the prop is hitting both sides and then causes imbalance flow. A normal rudder in the flow is taped and therefore no cross flow.

So what this does is allow rudder control (wings wobble otherwise at high angles or no control at hover) at all aspects of flight.
So this is the "udder rudder".
I like to design and fly unique planes.
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That is one of the really fun things about the foam planes that are cut from plans, is that they are so customizable.
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The dimension of the movable rudder. (going around)

1) width is 1 3/4" wide (perpendicular to hinge) for movable rudder.
2) a little over 7" for the tape length.
3) it goes into the channel for 2"
4) moves down the channel about 2 3/4 plus "
5) moves back 3/8"
6) arcs up and to the back surface of the rudder at an angle to clear your max elevator deflection.
7) length back up parallel to hinge is about 8 3/4" for me.

Adjust to fit your setup.

Here is another view from the rear looking straight in.
alpha rudder from rear.JPG 

The other advantage is no elevron material is removed(if regular rudder was in the channel) which would cause airflow pattern change or instability.
I like to design and fly unique planes.
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