I received a lot of questions on the benefit and differences of these gyros.

I have been trying Futaba GY350-GY351-GY352 and some of the early ACT "Wingo" gyros, plus one recent ACT Fuzzy Logic Pro V3.
It will be something of preference, but I've always been finding the ACT somehow more user friendly (don't ask me in which respect...).
I have no idea what is precisely the difference between the V2 and V3, but the early "Wingo" did not even have AVCS mode and/or a pot meter for setting the hard/dynamic mode. I did this myself by programming a mixer which dialed away the gyro sensitivity completely as soon as I touched my aileron stick. As long as I was steering, I got full unlimited control, when I released the stick, the gyro took over the stabilizing corrective actions.
This blending-away was already built in in the original gyro software, but could not be adjusted. Hence the own programmable mixer.
Again, without knowing the differences between V2 and V3 : the gyro which ACT made 8 years ago was totally meeting with all my needs for displaying the SpiderJets F-16 in the highest AoA at slowest speed ever seen without tip stalling, so I can only assume everything "better" than that is fine with me but won't make a difference.

I would NOT recommend AVCS mode, as it adds more complexity to your preparation and attention before and during each flight, and as for me, I have always been 100% satisfied with the "Normal Mode" for jets.
I guess Heading Lock (= AVCS) was invented for helis and definitely has its obvious benefits there, but with jets I don't see it. The normal mode dampens the influence of crosswinds, or eliminates for example corrections of ailerons in knife-edge, or corrects minimimally at such high speed you don't even see it. The best description litterally is : flying like on rails. That's the difference, and it makes any plane a very relaxing and docile one, without nasty habits and unexpected movements. I have never tried it on elevators (I don't see how it can stabilize a lot there...) although I had installed it in my JetLegend L-39 (but never opened the gyro sensitivity on that axis).

In the future, and for avoiding human mistakes, I am considering to put the ATV of the sensitivity on the AVCS side completely to 0%, so it can never enter this mode.
An example, suppose you trimmed during your flight your ailerons, and you open your AVCS mode in flight, will result in a slow roll as the gyro refers its "natural" zero point as the point when you booted up your RX.

I would like to once again stress the importance of proportional control of your gyro sensitivity on your TX (I use one of the side sliders), as our jets have a very wide speed envelope. A jet whichs starts to wag at full speed (and this is with such fast amplitude it is similar to flutter !) is definitely NOT something you want when you make a full throttle vertical dive. Clicking it back with a few clicks will be sufficient ; a switch is too much "ON/OFF" and you will not develop a feel on HOW MUCH you should correct the sensitivity.

Hope this information helps some more.

For any detailed information : better to ask the dealers or the manufacturer : [email protected]


Nicolas.