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HomeAircraftHelicopterMain Discussion › Cyclic Rings - Difference Between Round and Square
03-05-2008 05:44 PM  10 years agoPost 41
KC

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WA

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a round cyclic ring keeps the sum of f/a and l/r cyclic deflections from exceeding 100% of full f/a or l/r cyclic.

a cyclic stick without any ring produces just over 1.4 times as much swashplate deflection in the corner than either a full f/a or l/r cyclic deflection will cause.

in other words, if you have 6 degrees deflection on your indiviual cyclic controls, you will have over 8 degrees in the corners.

generally we all want to max the cyclic rates and therefore set up as much f/a and l/r as you can get, but not many set up for getting as much of both rates at the same time....hence rings.

a square ring was made for guys who ride a cyclic input over hard through maneuvers like travelling back flips and rolling circles. It is better to get used to using less of the 'stationary' stick so you have wiggle room to correct with....and knowing most 3d pilots, they learn this after the mechanics of the maneuver anyways, we all do.

A ring isnt essential, but if you set up for getting as much cyclic deflection as you can get, a ROUND ring is very helpful in keeping yourself out of too much trouble

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03-05-2008 06:02 PM  10 years agoPost 42
GatorUp

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Palm Beach,Fl.

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After flying for a year I put a square ring on . Oddly enough even while doing pyro flips ect. I don't even hit he ring. It seems once you get your timing down it's almost unnecessary. It does prevent from binding if I do go too far.
It's almost like training wheels

Living life on a razors edge,.. Go GATORS!!!

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03-05-2008 06:11 PM  10 years agoPost 43
Simmer

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Massachusetts

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Mr10X Ah I see my mistake and I understand now how you reduce the elevator.

Gatorup Makes sense "training Wheels"

I still am not sure which of the two would be right for me.

I know what the next guy will say... get them both and try it out. I would if I knew I would benifit from either of them.

Thanks for the help guys.

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03-05-2008 06:17 PM  10 years agoPost 44
DS 8717

rrProfessor

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I guess it how you fly as to which one you want.i have both and the round one takes out a lot of cyclic.You also have to be careful because some rings wont let the stick get full travel because it will hit the ring before you move the sick all the way to the ends on cyclic.

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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03-05-2008 06:47 PM  10 years agoPost 45
GimbalFan (RIP)

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Big Coppitt Key, FL

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The problem with the round rings is as soon as you move it to say right aileron,it takes out elevator if your up against the top of the ring. - MR10X
Not a problem at all -- this is precisely why we use them. If the ring weren't there to 'take out' some of the elevator movement as you add aileron, the swash would be able to bind as its combined, overall deflection increases.

This effect with plank control surfaces is undesirable, but on helis it's ideal.

With a round ring (with zero expo), maximum equal swash deflection in all directions is achieved. Short of 'software' rings within high-end tx's or a pilot's (rare) ability to limit his stick travel manually, there's no other way to achieve maximum equal cyclic deflection in all directions w/out also having the risk of rubbing the swashplate's upper and/or lower shoulders against the mainshaft.

op-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-t

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03-06-2008 03:19 AM  10 years agoPost 46
GatorUp

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Palm Beach,Fl.

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Also I pinch my sticks with zero expo , but that's a whole new drawn out thread

Living life on a razors edge,.. Go GATORS!!!

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03-06-2008 05:52 PM  10 years agoPost 47
Simmer

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Massachusetts

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After all is said and done, I think Ill go round then.

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03-06-2008 05:55 PM  10 years agoPost 48
GimbalFan (RIP)

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Big Coppitt Key, FL

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After all is said and done, I think Ill go round then.
In early days learning helis I experimented with expo on cyclic and collective (via the pitch curve) but I always came back to zero. I like that it forces me to develop expo between the ears, plus it makes perceiving subtle differences in flight characteristics between different birds less subtle.

I still use a little (15-20%) on the rudder but that's about it.

op-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-t

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03-06-2008 06:53 PM  10 years agoPost 49
DS 8717

rrProfessor

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Quote
--------------------------------------------------------------------------------

The problem with the round rings is as soon as you move it to say right aileron,it takes out elevator if your up against the top of the ring. - MR10X
--------------------------------------------------------------------------------

[quote]Not a problem at all -- this is precisely why we use them. If the ring weren't there to 'take out' some of the elevator movement as you add aileron, the swash would be able to bind as its combined, overall deflection increased.
You only want to limit the travel in the corner not just off center.
Problem was a bad choice of words,difference is a better word.
I prefer the square one myself.

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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03-06-2008 06:56 PM  10 years agoPost 50
GimbalFan (RIP)

rrProfessor

Big Coppitt Key, FL

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Do you prefer the square one because you also use expo?

op-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-t

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03-06-2008 08:05 PM  10 years agoPost 51
DS 8717

rrProfessor

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I use - expo on my 10X.

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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03-06-2008 08:46 PM  10 years agoPost 52
Simmer

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Massachusetts

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I tried expo in the past with my raptor, but didnt like it. With the Trex600N I purchased very fast servos, (8717s) running them currently at 5.4 volts regulated. Its touchy real touchy so I tried 22% and find its not so touchy. I still find it very very responsive. I think this head/servo setup is so much more responsive than any of my past helis, (Raptors and Xcell Graphite 60) that expo was the answer. Previous to this heli I would never think of using expo.

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HomeAircraftHelicopterMain Discussion › Cyclic Rings - Difference Between Round and Square
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