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Old 05-24-2010, 07:37 PM   #1
pawankt
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Default Difference between 3, 3.5 and 4 channel helicopters

I'm not really a newbie as such but I never quite understood the difference between a 3 and a 3.5 channel helicopter..they say it has a gyro but how exactly does that help?
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Old 05-25-2010, 04:54 AM   #2
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You'll have better luck asking this in the helicopter section.

Brian - AMA 666 72 mhz and glitch free!!!


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Old 05-25-2010, 06:11 AM   #3
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Talking

Hi
3 channel helis can move forward reverse and turn left and right
Left stick on the tx is throttle and right is rudder and elevator
The for and aft movement is accomplished with a rear motor turning a rotor blade horizontely to change the pitch of the heli
The first picture is of a 3 channel heli the falcon jet with gyro
The gyro on these function as a HH holding the heli in a desired direction on my 3 channel helis without them you will have to continuley adjust the trim for the right and left as the battery runs down with the gyro you do not have to
3.5 means different things for different helis, some use the .5 to control the lights on the heli and some use it for a 2 speed control for the forward and reverse flight
4 channels give you full control with rudder , left and right
Throttle, control speed of motors
Elevator forward and reverse
Aileron slide left and right
2nd photo is a 4 channel coaxial Proto cx
3rd is the 4 channel fixed pitch Blade Msr
I have many different types of helis in my hanger from 2 to 6 channel
http://www.rchangout.com/forums/album.php?albumid=1
If you would like to see videos of the helis in action or have any more questions about them just ask
Take care
Hank

"When wild the head-wind beat,Thy sovereign Will commanding, Bring them who dare to fly, To a safe landing."
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Old 05-25-2010, 06:30 PM   #4
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I'm pretty sure you don't really have a "3.5" channel.

Each channel is used to control a range of motion.

2ch controls the fixed rotor speed to change elevation and the yaw, or left to right. This may be with a tail rotor or changing the sync of a coaxial rotor system

3ch will add pitch or roll

4ch will give you rotor speed, pitch, roll, and yaw. How this is accomplished varies by heli mechanical design.

moving to a '6ch' allows you to control the main blade pitch as well as the rotor speed, these two tend to be mixed or linked. the extra channel is usually used for gyro control, although most people don't actually change this during flight so it's somewhat silly to say it's using all 6 channels. Past 6 ch goes into IC engine mixing control and scale effects.

There is ALWAYS room for some levity in your brevity!
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Old 05-25-2010, 07:14 PM   #5
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thanks! this was helpful..the .5 was always something I was confused about..people here in dubai seem to make it a whole new big deal...

I have a question about using a 10C lipo instead of a 15C which I own without much info..i'd appreciate help on that...I have added more details on the general heli talk forum

Pawan
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Old 05-25-2010, 07:29 PM   #6
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Originally Posted by MaxAdventure View Post
I'm pretty sure you don't really have a "3.5" channel.

Each channel is used to control a range of motion.

2ch controls the fixed rotor speed to change elevation and the yaw, or left to right. This may be with a tail rotor or changing the sync of a coaxial rotor system

3ch will add pitch or roll

4ch will give you rotor speed, pitch, roll, and yaw. How this is accomplished varies by heli mechanical design.

moving to a '6ch' allows you to control the main blade pitch as well as the rotor speed, these two tend to be mixed or linked. the extra channel is usually used for gyro control, although most people don't actually change this during flight so it's somewhat silly to say it's using all 6 channels. Past 6 ch goes into IC engine mixing control and scale effects.
Hi
The .5 in a 3.5 channel heli is a marketing term for a switch controling lights or tail rotor speed as in this model
Take care
Hank

"When wild the head-wind beat,Thy sovereign Will commanding, Bring them who dare to fly, To a safe landing."
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Old 05-25-2010, 10:49 PM   #7
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pawankt,

I merged your two threads together and deleted any duplicate posts.

Pat Gagnon

Owner - Nico Hobbies

Your source for micro pusher jets!
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Old 05-25-2010, 11:07 PM   #8
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Originally Posted by kenchiroalpha View Post
Hi
The .5 in a 3.5 channel heli is a marketing term for a switch controling lights or tail rotor speed as in this model
Take care
Hank
and as such, we don't have a .5 channel. You either have an available channel or not. regardless of proportional or on/off.

Trying to talk in market terms will only add confusion, focusing on radio interface function should help long-term understanding.

There is ALWAYS room for some levity in your brevity!
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Old 05-25-2010, 11:24 PM   #9
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Originally Posted by MaxAdventure View Post
and as such, we don't have a .5 channel. You either have an available channel or not. regardless of proportional or on/off.

Trying to talk in market terms will only add confusion, focusing on radio interface function should help long-term understanding.
Hi
It is confusing but you know how advertisers are
They will try anything to make a product sound more desirable to the consumer then it really is
Its nice to have places like watt flyer to help with your rc questions and get a product users answers and not the marketing claims
Take care
Hank

"When wild the head-wind beat,Thy sovereign Will commanding, Bring them who dare to fly, To a safe landing."
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Old 05-26-2010, 01:09 PM   #10
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Originally Posted by crxmanpat View Post
pawankt,

I merged your two threads together and deleted any duplicate posts.
Excellent! Thankyou for that...
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