Thursday, February 24, 2011

Little tips about building your own RC helicopter



Flying RC helicopter is really very exhilarating. Their versatility gives a RC pilot a complete access to the three-dimensional space in such a way that no other machines can! I have played RC helicopter for more than one year but still find that I have just learnt a few tricks that it can perform.
There are generally two micro-helicopters ( indoor ) in the RC market. I have already planned to buy one of them as they can fly inside the living room and even take off on ours hand. Unlike those operated by gas, these electric helicopters are very clean and give out no terrible noise at all. In one nightfall, I visited a web site, which is about how to make a hand made RC helicopter. I was totally impressed and started designing my own helicopter. Here is my helicopter:

The plan of the helicopter had finally been completed. It is not very well drew. The current plan available is only for the fixed pitch design. Please click the above photo for the plan.

Here is the progress of my work:

Several weeks after completing the first model as I describe above, I start to turn my view on a flybarless collective pitch rotor head. The reason for this modification is very simple. Just to get more stability especially during descending. The tail rotor parts from a Concept EP can be converted into a collective pitch rotor head for my helicopter. However, The tail rotor hub is a little bit heavy and big in size. Therefore, I decided to made one from fiberglass circuit board. Just click the photo for the flybarless collective pitch modification I.
This first attempt was actually not success due to the lack of tester damper. Worse was to come, the swasplate came apart during a flight test as the rotor disk is too unstable. I overlook its importance to the cyclic respond at the very beginning and it was doom to failure. Here is my second attempt: (click the photo below for details)
       
NewlAdde:
I Bought a Hornet CP upgrade weeks ago for my helicopter but never got the time to build it. Also, I want to control the helicopter by my JR3810 Tx which has no 90-degree 3-servo CCPM. Therefore, the servo arrangement must be changed in order to use the 120-degree 3-servo CCPM available. BTW, just bought a Hacker B20-31s for the hornet CP rotor system. How this combination works....coming soon!

NewlAdde:    
There was a time many people gave out their tries on CD-Rom motor modification. Some with great result while some fail completely. I finally join the groups trying these tiny brushless motor for hobby use. To me, the power of these brushless motor is really amazing when compare with those bulky brushed speed 300 motor. Just click the photo below for more information:
NewlAdde:
Two new pages had just been uploaded. One is about making your own blade while the other one is aboutLithium cells. Also, a circuit diagram had been added to the page "electronic components"
 
Have you ever thought about making an airborne video system. Yes, It is also possible for an indoor helicopter. Please click here for details.
Here is a photo gallery page about my helicopter and some of its technical specifications.
 Just click the helicopter to visit my video page!
If you know nothing about R/C helicopter, here is the first step leading you to understand it more.
Here

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