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HomeRC & Power✈️Aircraft🚁HelicopterFlybarless Rotor Head SystemsOther › Flybarless system - CYCLOCK or V-STABI???
05-26-2007 01:30 AM  13 years ago
JKos

rrProfessor

Redondo Beach, CA

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Russ,
> At this moment in time, the hover is slightly less stable than a
> well set up flybar model

I do hope that can be improved. While I tweak my setups for fast cyclic rates, I'm not willing to give up hover performance to get there which means I go through a lot of blades, paddles, and head settings before I get to what I like.

BlueGarry1,
With respect to accuracy, there is a very real increase in accuracy out of the radio and also in the eCCPM calculations.

Since you are now using the radio in normal swash mode, the transmitter is able to deliver a more accurate representation of your stick inputs to the heli (the Cyclock to be exact). The Cyclock is then able to use these higher fidelity inputs to perform the eCCPM calculations. Since the Cyclock's output resolution is 4096, you end up with higher fidelity signals to the servos as well then what any transmitter on the market can transmit.

What am I trying to say... Think about how little of the full possible servo throw rotation is used for each input on an eCCPM setup. So out of a total of, say, 1024 steps of maximum radio system resolution you are only actually using, say, 128 steps of that for full aileron input to the two servos which move for an aileron input.

With Cyclock (and the V-Bar system) and the radio in normal swash mode, you can now get much closer to the full 1024 steps of radio system resolution for your aileron inputs. That increased stick-to-transmitter-output resolution is then used by the Cyclock (or V-Bar) for the eCCPM calculations.

- John
RR rules!
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05-26-2007 08:28 AM  13 years ago
BlueGarry1

rrKey Veteran

Romford, Essex, UK

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Russ & John.

Thanks a million for the information. It's really helpful.

I have a JR Airskipper 90 heli with JR8301 ccpm servo's installed
and I find the machine to be very stable, but I'm thinking that anything able to improve stability and accuracy must be worth considering. I prefer F3C / FAI type flying and I use a Futaba FF9/9C
transmitter.

It looks like I'll be giving the Cyclock unit a try this summer.

Thanks again for your help and advice.

Bluegarry1

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05-26-2007 01:01 PM  13 years ago
RussD

rrVeteran

UK

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Hi Jkos,

Not sure 'slighty less stable' was the correct choice of words from me and I am gauging against total all round perfection... but hovering stability does not provide the same total 'wow factor' as when it comes to agility and free-running of the disc through extreme 3-D manouvers. Forward flight accuracy is nailed and very impressive / accurate without the need for air-speed sensors etc.

Hi BlueGarry1,

I would be tottaly shocked if you do not see a dramatic improvement in accuray for F3C with FF9 TX!

RussD.
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06-02-2007 01:32 AM  13 years ago
JKos

rrProfessor

Redondo Beach, CA

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FYI, for those who would be new customers of Advantage Hobby, you can get the CSM setup for $475 shipped after the 5% discount. That's two 720s, Cyclock, and USB interface.

- John
RR rules!
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06-19-2007 06:32 PM  13 years ago
JKos

rrProfessor

Redondo Beach, CA

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As an update to something I posted earler in this thread, it appears the price of V-Bar has gone back up to $1000 from the all time low of $721.

- John
RR rules!
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HomeRC & Power✈️Aircraft🚁HelicopterFlybarless Rotor Head SystemsOther › Flybarless system - CYCLOCK or V-STABI???
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