Scale Heli Question: Flybarless Setup?

[JYZoom]

flybarless wiring

OK..then here go. This is how you would configure an CSM flybarless.
If you have mCCPM you don't need the cyclock or if you want to use your radio to do the eCCPM "you should" be able to drop the cyclock also.

Jonathan

[Super-Hornet]

I think both gyro (elevator and aileron) remote gain is better NOT connect to the same channel. The reason is that, u want to have different gain value right? In 2 bladed flybarless, u will notice that Elevator side allow u to have higher gain than the Aileron side.

SH

[Adrianli]

My head is going


I just wana fly a heli n forget abt such technical stuff.

[JYZoom]

My head is going


I just wana fly a heli n forget abt such technical stuff.

Is ok. Take a look at the http://www.skookumrobotics.com/downl...360_Manual.pdf on how easy it can be setup.

Quite promising compare to VSTABI in terms of ease of configure.

Benefits:
- Lower power consumption meaning longer flight time, easier on wallet for battery and motor to get same perfromance.
- Less parts to replace when crash.
- and the COOL factor.

Jonathan

[BloodClod]

Please please go ahead and continue chatting... I am reading and learning.

BTW, what exactly is cyclock? I'm thinking it won't be the same thing as the little ccpm-circuit from Ace that SH is using in his Cobra?

[Super-Hornet]

Cyclock is just a eCCPM mixer but with more features. It is similar to helitronix but are more design for 3D in mind (I think)

[JYZoom]

cyclock

more then that....if you don't have a high end radio like 14MZ that is doing the mxing...this is a good solution. As ammo sold me, and it is really proven itself.

CycLock 1 CCPM manager

The real alternative to expensive in-transmitter mixing.

Eliminates RC system latency errors:

One of the most common problems with in-transmitter mixing of CCPM is that the three servos driving the swash plate receive their position information at different times so, for example when you push the collective stick one servo will receive the command to move first and, if it's a fast coreless servo may well have reached full speed before the other two servos even know they should be moving. This causes transient, unpredictable errors in the elevator and aileron when large sudden collective inputs are made. CycLock allows the RC system to transmit separate unmixed aileron, elevator and collective signals and mixes these simultaneously into all three servo command streams thus eliminating this source of errors. Also, by using two dedicated processors to handle the CCPM mixing CycLock can apply a complex mixing algorithm while keeping delays undetectably short - the mixing calculation takes less than 1ms - less time than it takes to send a single servo pulse. Also, where digital servos are being used on the swash-plate CycLock can drive these servos at digital servo frame rates - a feature that really comes into its own in electronic stabilised flybarless applications.
Exploits full resolution of the RC link:

Because of the geometry errors in CCPM linkages become more apparent when large servo travels are employed it is normal for the total servo travel of the swash plate servos to be less than the standard (100% ATV) throw. Furthermore, each control (aileron, elevator, and collective) is responsible for only a small proportion of the total servo travel. Where the CCPM mixing is done in the transmitter all this adds up to a big loss in resolution with which the commands are transmitted. Lets assume you are using an RC system with a resolution of 2048 points. This 2048 points has to cover the maximum servo travel obtained with say 140% ATV set. So at 100% ATV you are already down to 1463 point resolution. At a typical CCPM servo travel of 70% you are down to 1024 points. If the collective throw only covers 50% of the CCPM servo travel you are down to 512 point resolution and for elevator and aileron the situation is probably worse. So, if you use in-transmitter CCPM mixing you can be reducing the control resolution of the best 21 century radio systems down to that of a 512 point system that went out of fashion the 1980's!

With CycLock you transmit the aileron, elevator and collective signals at maximum ATV (say 140%) and exploit the full resolution potential of the RC system. CycLock then mixes the signals and transmits the resulting servo commands at 4800 point resolution losing none of the control resolution of your radio system.

Corrects for CCPM geometry errors:

All CCPM systems suffer from interactions due to the geometry of the linkages. These errors are most apparent at large collective pitch values and give rise to aileron-to-elevator, aileron-to-collective, and elevator-to-collective interactions. CycLock has six geometry correctors that allow these errors to be offset providing greater accuracy and allowing, where advantageous, larger servo throw angles to be employed.

Electronic cyclic ring:

This has a number of advantages over a physical cyclic ring. Because it acts on the signals and not on the stick you can make adjustments to the stick feel of the transmitter with travel adjustments, rates and exponential without the worry of making a change that could over-travel the linkage. It even works for mode 1 pilots where the aileron and elevator are on separate sticks! Importantly, it works when gyros are introduced into the system for electronic cyclic stabilisation.

http://www.rcmodels.org/csm/cyclock1.htm

JOnathan

[usuckpoo]

guys, can the 4 bladed set up do mild 3D?

[JYZoom]

depend

guys, can the 4 bladed set up do mild 3D?

flip and rolls....acrobatic. Yes....mild 3D...doubt so.

[Super-Hornet]

If u want to do 3D on 4 bladed, it might be possible by not connect any stability gyro assist at all (or turn all the cyclic gyros gain to as low as possible).

SH