FIRST TIME CUSTOM BUILD. NEED HELP!
#1
Thread Starter
Senior Member
Joined: May 2007
Posts: 494
Likes: 0
Received 0 Likes
on
0 Posts
From: glens falls,
NY
hey whats going on fellas? ok so i recently bought a estees rc plane from wal-mart. its the blue angels model. its pretty nice for a 50 dollar plane. i also have a blade cx/2 that i dont really use anymore. so the concept i have in mind is to take all the stock components out of the blue angels plane and replace them with the components from the blade cx/2. the idea im having is to use the twin engines from the cx/2 for forward flight and also to use them for steering the plane seeing how the plane already uses thrust vectoring to steer. that part is easy. i have that all fiqured out. but what i want to do is use the 2 servos that it has to have it control the elevator which im sure i can do myself, and then the other servo to control the ailerons. stock the plane climbs using more engine speed to climb. the elevator would rule that out. but i also want to have it setup so that the plane can do barrel rolls and banks and such. so im tring ti fiqure out how to use a single servo to control the ailerons. cause one side to go up and the other to go down to allow it to do barrel rolls. if anyone has diagrams as to how i could do this i would really appreciate it! thanks fellas! chris
#2
Sell your CX/2 instead.
You'll get more money for it than you would spend purchasing a set of cheap 9.00/ea micro servos and equivalent motors.
Check out BPHobbies or other component vendors for inexpensive parts that you can use on the F-14.
Also peruse the ARF's that are available.
You'll get more money for it than you would spend purchasing a set of cheap 9.00/ea micro servos and equivalent motors.
Check out BPHobbies or other component vendors for inexpensive parts that you can use on the F-14.
Also peruse the ARF's that are available.
#5
Thread Starter
Senior Member
Joined: May 2007
Posts: 494
Likes: 0
Received 0 Likes
on
0 Posts
From: glens falls,
NY
well i appreciate that comment but im more intrested in doing a custom build to challenge myself. i have plenty of extra cash if i wanted to go out and buy a plane but the idea here is to make it myself to see how well i can do. so again any diagrams as to how i can use a single servo to control the ailerons would be great! thanks, chris.
#6
Here's how it's done:

I apologize for the poor quality, but I threw this together fast.
A wire with an "L" bend comes out of the aileron and gets another "L" bend, this time going up. The servo rod gets connected and when one side pulls the other pushes.
Just one suggestion. I would use two servos for the ailerons and one for the elevator instead of the other way around. You'll get a crisper response.
May I also suggest you put together a small kit before going completely "solo" on a build job? You may be sure you have the aerodynamics all figured out, but it is trickier then gluing an engine to a piece of foam to get a good flying model.

I apologize for the poor quality, but I threw this together fast.
A wire with an "L" bend comes out of the aileron and gets another "L" bend, this time going up. The servo rod gets connected and when one side pulls the other pushes.
Just one suggestion. I would use two servos for the ailerons and one for the elevator instead of the other way around. You'll get a crisper response.
May I also suggest you put together a small kit before going completely "solo" on a build job? You may be sure you have the aerodynamics all figured out, but it is trickier then gluing an engine to a piece of foam to get a good flying model.
#7
Thread Starter
Senior Member
Joined: May 2007
Posts: 494
Likes: 0
Received 0 Likes
on
0 Posts
From: glens falls,
NY
thanks king that quicky build of yours looks like the perfect thing for what im doing. seems funny that i couldnt think of that on my own but im sure it will work great. as far as using 2 servos for the ailerons goes i only have 2 servos to work with on the rx for the heli. ive also decided to go with a from scratch design instead of using the stock blue angels plane. ive built several other planes from scratch so i dont feel that i need to build a small kit for the experience. this is however going to be the first larger scale that ive built, somewhere around 40 or 50 inch wing span. thanks for the help though. oh and i found out that the controller and receiver from my heli has an optional 5th channel that is controlled by a dial type knob. so im going to be looking for a way to add flaps as well for smoother landings. thanks again though i found this to be helpful in my quest.
#9
Senior Member
Joined: May 2006
Posts: 191
Likes: 0
Received 0 Likes
on
0 Posts
From: Sammamish,
WA
The question I have is will the engine of the CX/2 have enough thrust to move the airplane with a 40 - 50 inch wingspan? plus the additional modifications are going to add more weight.
#11
Thread Starter
Senior Member
Joined: May 2007
Posts: 494
Likes: 0
Received 0 Likes
on
0 Posts
From: glens falls,
NY
ive recently bought a set of props for the plane and i did a thrust test on it to see if was going to work or not. the results were amazing. i had the 2 motors tape to a make shift cardboard stand with all the electronics attached and it had enough thrust to lift all of it off the table. so im confident that there will be plenty of trust for this build. fuselage is going to be constructed of 2/16" balsa, and im using the wings (front and rear) from a firebird phantom which has a 30" wingspan i beleive it is. with all theconstruction materials combined i cant see it weighing more than 8 or 9 ounces. im going to try and post some pics of my progress for you
#13
You have to remember though that those motors were designed to be used with a step down gearing arrangement.
They do not have the windings to handle the load imposed by directly driving a prop.
They may seem more than powerful enough, but you'll quickly burn them out on a plane, whereas on the heli they would be idling along.
They do not have the windings to handle the load imposed by directly driving a prop.
They may seem more than powerful enough, but you'll quickly burn them out on a plane, whereas on the heli they would be idling along.




