A couple Mini Vbar v5.3 questions..

Finally some decent weather, to test fly my FBL Mini Titan build (450 size) fitted with the Mini vBar. A couple questions.

1) During tail setup, I was able to achieve a perfect setup as I understand it, 96/96. The tail seems to be holding well in all flight modes. Normal mode (2400 rpm), ST1 (2500) and ST2 (2600). Currently, I have the PC software configured to allow me to adjust tail gain remotely via my gyro sense function. The PC software does reflect a remote change, so it looks to be working. However, I have found that I can raise the tail gain to 100% without seeing a tail wag. Why is this? I have always known to use the method of finding wag, then backing off a few clicks for optimal tail performance.

2) Regarding Main Rotor Gain, what is the suggested method for finding the optimal performance?

Thank You,
Nick

1 - forget the oldschool method, not needed here. As soon as the tail does hold well and isn't noisy on a overspeed etc. all is ok.

2 - just as above - if it feels ok - it will be ok. Too much gain will cause e.g. a whipping heli after a stop.

regards (EN) / Gruss (DE)

Rainer Vetter

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Posting and answering - please use a PC and a standard keyboard. Answer all questions fully, take the needed time, don't forget probably requested attachments.

Für Posts und Antworten bitte einen PC und eine richtige Taststaur benutzen sowie alle Fragen vollständig abarbeiten. Nehmt Euch Zeit, beantwortet Rückfragen in Ruhe und vollständig.
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Für Einzelkommunikation bitte ausschließlich Email verwenden! - PN, Messenger, Chat usw. werden nicht bearbeitet.
For single user communication please send a email only! PM, Messenger, Chat etc. won't be read.

How are you Rainer, appreciate it.

What do you mean by "a whipping heli after a stop"?

Raz

Like a bonucing forth and back - e.g. after a Flip at the Stop.

regards (EN) / Gruss (DE)

Rainer Vetter

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Posting and answering - please use a PC and a standard keyboard. Answer all questions fully, take the needed time, don't forget probably requested attachments.

Für Posts und Antworten bitte einen PC und eine richtige Taststaur benutzen sowie alle Fragen vollständig abarbeiten. Nehmt Euch Zeit, beantwortet Rückfragen in Ruhe und vollständig.
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Für Einzelkommunikation bitte ausschließlich Email verwenden! - PN, Messenger, Chat usw. werden nicht bearbeitet.
For single user communication please send a email only! PM, Messenger, Chat etc. won't be read.

Ahh, I understand now. Appreciate it Rainer!

Raz

After a few test flights, although the heli flies nicely hovering upright and during forward flight circuits (smooth and stable). Once I flip her into inverted hover, she gets erratic. Struggles to find stability when inverted.

As mentioned, she is a 450 size machine, swinging 325mm mains at 2600 rpm governed via Castle Creations SET Mode. Current Mini Vbar Pro settings are as follows..

Main Rotor
Style = 90
Agility = 90
Gain = 45
Expert Parameters
Elevator PreComp = 8
Paddle Sim = 20

As a side note, could it be a governor gain adjustment? Currently, I have the governor gain defaulted to Low @ 15. But upright climb outs seem to hold RPM okay.

Thanks,
Raz

Hello,

might be either a too high gain or Style value - just try 5 points lower.

regards (EN) / Gruss (DE)

Rainer Vetter

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Posting and answering - please use a PC and a standard keyboard. Answer all questions fully, take the needed time, don't forget probably requested attachments.

Für Posts und Antworten bitte einen PC und eine richtige Taststaur benutzen sowie alle Fragen vollständig abarbeiten. Nehmt Euch Zeit, beantwortet Rückfragen in Ruhe und vollständig.
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Für Einzelkommunikation bitte ausschließlich Email verwenden! - PN, Messenger, Chat usw. werden nicht bearbeitet.
For single user communication please send a email only! PM, Messenger, Chat etc. won't be read.

Are you referring to the main rotor gain or governor gain? The Vbar software suggests 60 for a Trex 450 (same size as my Mini Titan). So try going lower than 45?

Hmm, hadn't thought style could pose a problem. So try 5 points lower here too?

Thanks,
Raz

I am talking about main rotor, sorry. The Gain depends on the servos, dampening and head speeds as well - so just try lowering the gain and if no change try the style.

regards (EN) / Gruss (DE)

Rainer Vetter

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Posting and answering - please use a PC and a standard keyboard. Answer all questions fully, take the needed time, don't forget probably requested attachments.

Für Posts und Antworten bitte einen PC und eine richtige Taststaur benutzen sowie alle Fragen vollständig abarbeiten. Nehmt Euch Zeit, beantwortet Rückfragen in Ruhe und vollständig.
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Für Einzelkommunikation bitte ausschließlich Email verwenden! - PN, Messenger, Chat usw. werden nicht bearbeitet.
For single user communication please send a email only! PM, Messenger, Chat etc. won't be read.