v-bar gyro rate/HH mode

[rcmarty]

Wondering how to get the gyro in the vbar to switch between HH and rate.

I like to start on the bench (600n) and carry the heli to the flightline in rate mode , then switch to HH and takeoff.

The gain switch was used to do that before the vbar.

How do i go about that in the vbar

(bank switching ?)

Martin :)

[th3tick]

Bank switching is definitely the way you'd do this, but I'm unsure as to why you'd want to. Is it to avoid the tail responding while you're carrying it? If so, there's no harm that I've found to that unless you haven't set your limits properly.

I'd rather use the different banks to tweak behaviors, but since I've gotten it mostly dialed in, I just plug in and fly...

John

[rcmarty]

What do you do when carrying to the flightline ?
if your in a different position the tail will want to goto that heading when it can.

this could make the tail swing unexpected on you.

when i had a 401 in there i used to power up in hh then switch to rate and then back to hh at the flightline.
That way my takeoff position is my current heading.

Does the vbar compensate for this somehow ?

Martin :)

[th3tick]

I'm not really getting what the issue is. The gyro will move the tail around while you carry it, but it's not a big deal, is it? I mean, it's not harming anything, or hitting anything, or particularly fast...

John

[Dynamic]

update your v-bar software to the new version and you will have an option to set your tail in rate mode. Do this for a secondary bank.

Me personally I would just wiggle my rudder stick to straighten it out before taking off.

[rcmarty]

My understanding of the HH is that the heli will maintain a heading untill it's changed.

If you were to power up facing north (for example) and set the heli down on the flightline facing west , when you spool up and the tail starts to get some authority it will swing to the original north heading on it's own. If you weren't expecting this it could cause you problems, being your not fully spooled up , you might not have enough headspeed to deal with the sudden changes.

no problems with binding though.

Maby its more of a nitro thing as my electrics i take to the flightline and power them up. therefore the heading i take off in is the same.

I see you sig has a nice fleet of electrics , maby this hasn't been a factor for you.

I start my nitros on the bench and walk them out , electircs i power on the flgihtline.

Martin :)

[th3tick]

As Dynamic states, if you use your stick to wiggle the rotors back to mostly straight, it's no big deal. I usually deal with a little twist on spool-up anyway, as it's trying to get up to speed and countering the torque of the main rotors.

John

[Dynamic]

My understanding of the HH is that the heli will maintain a heading untill it's changed.

If you were to power up facing north (for example) and set the heli down on the flightline facing west , when you spool up and the tail starts to get some authority it will swing to the original north heading on it's own

Martin :)

You power it up on the bench facing north....set it down on the flight line facing west, your tail is now at an extreme most likely. Give your ruder stick a little wiggle, this is an input and now your heli is re-oriented to the new position.

When looking at your heli before spooling up as long as your blades are properly centered you should be fine.

[OICU812]

There is no reason to have Non heading hold and heading hold etc... carry it to flight line, carry it to Vegas the gyro doesen't care dude, and it will work just fine.

[Azlum]

You dont even need to "wiggle" the rudder... just give it 1 small input in any direction during the spool up, and now your gyro will want to hold the NEW heading.

This applies with ANY HH gyro, not just the Vbar

[rcmarty]

Azlum .. im not following you on this one. How would a small input or either right or left cause the heading to center it's self.

Dynamic .. i've been giving a rudder input to center the slider (visual guess) and it has been working well for me. Im gettting minor movements when the hs comes up. There mellow and i can see then coming so i can correct them during take off.

I used to switch to hh on my 401 on the flightline and it always held tight to the setting for takeoff.

Thanks , martin :)

[Azlum]

It's difficult to explain but I'll attempt it again:

The gyro holds the last heading that the pilot positioned the helicopter to. So if you are spooling up and the gyro is trying to change the heading to the heading it was at when you first plugged the heli in, all you need to do is touch the rudder for a split second... now the gyro "thinks" that you just turned the helicopter to where you wanted it(it doesn't know that you're still on the ground and not at full headspeed), so it now tries to hold the heading that the helicopter is currently in.

I hope that makes more sense to you.. I'm not sure I can explain it any better than that.