PDA

View Full Version : Your Best Choice - Coaxial, FP, or CP Electric R/C Helicopter?



lovelyting88
02-05-2010, 04:21 AM
Generally speaking, electric RC helicopters can be divided into two main categories - coaxial models with two main rotors turning on a common axis, and single-rotor models, which have one lifting rotor and a smaller rotor in the tail. And single-rotor RC helicopters further could be classified to Fixed Pitch (FP) electric R/C helicopters and more advanced Collective Pitch (CP) ones, due to the adjustability of the pitch.

1. Coaxial Electric RC Helicopters

The electric R/C helicopters that have two sets of main rotors, one above the other, are called coaxial, dual rotor or contra-rotating helicopters that are becoming more and more popular in the word of electric R/C helicopters hobby because they are small to carry, easy to fly and inexpensive to purchase. This type of helicopter is very stable in the air and can be flown around. They have the big advantage of being a lot easier to master with little or no setting up involved.

2. Single-rotor Electric R/C Helicopters

Single rotor models are faster, more maneuverable and exciting to fly than the coaxial ones. But for most beginners of electric RC helicopter, single rotor helicopters are harder to control. However, as your skills and confidence grows, single-rotor flight will offer you great fun far from the coaxial models. As the following, letís see the differences between the two groups of single-rotor electric R/C helicopters.

FP Electric Collective Pitch
Slightly easy to fly Hard to fly than FP
Easier to build and set up (Less moving parts) Harder to set up (More moving parts)
Less expensive Expensive
Cheap to repair More time and more money to repair
Few movements! Only hover indoors and outdoors and fly forward 3D acrobatics! Fast forward flights, loops, rolls, stall turns, inverted flying, in place flips
No auto-rotation! It will be a dead weight if engine quits at an altitude Auto-rotation! Even if the engine quits at an altitude, it is still possible to down safely.

In order to understand the difference between Collective Pitch and Fixed Pitch - we first must get to know what PITCH is. The pitch in R/C helicopters refers to the angle of the blade with respect to the horizontal plane.

① FP Electric R/C Helicopters

Fixed pitch R/C helicopters mean that their main rotor blades remain in a fixed position. They are well suited for beginners because there are fewer things to control, making them that much easier to fly. With fixed pitch helicopters the amount of lift is dependent only on rotor speed and not on the pitch of the blades. Increased rotor speeds mean there will be more lift, and the FP helicopters will rise. Lower motor speeds mean less lift and the helicopter comes down. FP models react more slowly to the controls, which gives new pilots time to figure out how to fly.

② CP Electric RC Helicopters (More Advanced)

The newer, more advanced models of electric R/C helicopters incorporate a collective pitch. The main rotor blades can rotate to different angles to change the lift being applied to the chopper. Collective pitch is controlled by the throttle through automatic mixing. The pitch of each blade changes collectively to create the desired movement of the helicopter. CP ones are more stable because their blades rotate much more quickly. But they react a lot faster to the controls.

3. Conclusion:

All in all, coaxial electric R/C helicopter is your best choice for a first machine, because it is very easy to control and available to the masses at very affordable prices. The stability of coaxial models will boost your confidence to control electric R/C helicopter. Yet, RC pilots who can fly a coaxial helicopter well are often surprised to discover how different a single rotor helicopter is. Therefore, once you master the coaxial helicopters, you can upgrade to fixed pitch and really start to know how the R/C electric helicopters flies! Well, if you are satisfied with the movements of coaxial or FP R/C electric helicopters and are eager to make advanced 3D aerobatics, the extremely funny CP R/C electric helicopters are the must ones you should not miss of course.

Whatever electric R/C helicopter you choose, you should make sure that the spare parts is widely available and is not at high price. As is known to the electric R/C helicopter pilots, the base price of a model is not the total amount you will spend, if you want to be an experienced-pilot and get endless fun from it. The purchase of some spare parts is quite necessary, such as spare blades and extra flight batteries. Or else, in some occasions when you control is less than perfect and a crash occur, then your flying experience will end up for the high price or unavailability of spare accessories.

Finally, learning to fly one electric RC helicopter takes a lot of time and practice, and the purchase of an RC flight simulator is highly recommended as a serious training aid. It's an extra cost of course, but well worth it if you're even half-serious about the hobby. Hope that you will have great fun playing electric RC helicopter and a more enjoyable life.

Now online buy high quality electric RC helicopter at wholesale price at sourcinggate and you will certainly be surprised by what you see!

judithangels
02-28-2013, 05:06 AM
Co-Axial helicopter characterised with two blades that rotate in different directions. This makes it more stable in flight than single propeller rc helicopter, and therefore much easier to learn. If you have never flown a remote-controlled helicopter, better remote with a Co-Axial is to begin helicopter, before trying individually on a propeller.

rchelikopter
04-16-2013, 02:23 PM
I started with Co-axial rc helicopter (http://www.xhobbystore.com/) because they are very easy to control and learn how to fly. Right now i like the single blades because they are moving alot more faster and they fly good for outdoor. Im just 4CH level. I wish i can fly some 6CH rc helicopters some day ^^

MY FAVE ONE: WL-V911 RC Helicopter (http://www.xhobbystore.com/4-channel-v911-rc-mini-single-blade-helicopter.html)

judithangels
05-06-2013, 05:11 AM
4-channel rc helicopter is best for a beginner. With the 4-channel, you can control its vertical position, as well as spin it left/right, slide left/right, and move forwards/backwards. But the 6-channel choppers are a bit more complex, and thus more difficult to fly, especially for a beginner.But if you had experience about flying then you easily fly 6 channel rc helicopter (http://www.nitrotek-modellbau.de/rc-hubschrauber/6-kanal-rc-helikopter.html)