Thread: Cyclic Rings What do they do???

As Dave says, it limits the corners only.
Limiting the throw with ATV makes the not only the cornerthrow reduce but also the overall maximum cyclic deflection.

Im using one, and Me likes it

A cyclic ring prevents the pilot binding the swashplate when they still want 100% throws on elevator and aileron. Picture a swashplate tilting on full right aileron. Now if also add in full back elevator the swashplate will bind because 100% right aileron is not reachable. So the cyclic ring mimics the actual swashplate movement. i.e. at the diagnol you've only really got approx. 80% of each available.

Phil.

Ideally it would be a program option so that even if you moved the stick to the corner the transmitter would limit servo travel.

Phil.

From the FAQ:

The term AFR is short for Adjustable Function Rate, and is used in some transmitters to define the operational boundaries of any one control function.

Having set the ATV's to provide the maximum amount of mechanical movement for each function, you may not necessarily want to use it as the model would feel very lively and twitchy. This is all well and good for 3D where you need rapid responses and lots of movement in the control functions, but for hovering and slow graceful flying the movements will be way too much.

The solution to this problem is to setup AFR rates, this means that although you still have the function mechanically setup for as much movement as is possible using the ATV function to set the servo travel limits. Using a AFR you can restrict the stick movements to provide a less extreme and much smoother control feel. Different AFR's can be setup in different flight modes, so you can have one mode for hovering and graceful flying and another for 3D.

Second paragraph. First sentence. ATVs are used to limit travel of the channel and not the function. AFR is limit of the function.

The "cyclic ring software" function I was adding to the wish list was to reduce aileron and elevator when one or more would produce the swashplate to bind.

For example:

100% aileron and 0% elevator. No adjustment required.

0% aileron and 100% elevator. No adjustment required.

100% aileron and 35% elevator. This could require a reduction of the actual outputs to be: 85% aileron and 35% elevator.

100% aileron and 100% elevator. This could require a reduction of the actual outputs to be 75% aileron and 75 % elevator.

Basically the math would exactly match the circle provided by the ring.

Perhaps some clever programming of the mixes could produce a crude version of it.

It should also be noted that a mechanical cyclic ring is just required for a transmitter with aileron and elevator on the same stick. i.e. mode 2.

Phil.

just learn to set up and fly properly then you wont need a "cyclic ring"

Originally Posted by G-DAVE

You have to use AFR if you fly ECCPM - or if you are using any PMIXing.
eg if you want to reduce movement in say elevator then using ATV will only alter channel 2 servo and as we know in eccpm it takes 3 servos to perform an elevator movement - So, you use AFR select elevator and this time the reduction will automatically take place on all 3 servos combined.
Don't think AFR will do what cyclic rings does - but if you mean designers may build something into future sets then I think that's probable.
Dave

Sorry. Perhaps I should've been clearer. I was pointing out the error in the FAQ that was quoted to me.

I am aware that AFR adjusts the function. i.e. eileron, elevator, pitch, etc. rather than channel 1, 2, etc.

Keith. What exactly is a proper setup then? Perhaps you could clarify this. The transmitter manufacturers are producing square stick movements to fly this round tilting disc.

Phil.

wotever phill!

have you got my new tx ?