3G 2.1 tail issues Coolice Help!!

[MarkG_R1]

My 3G seemed quite happy but today i had a few tail problems

I can up the gain on the tx to make it hold steady and turn slowly fine but if i make a sharp rudder input
the tail bounces like mad when i centre the stick, lowering the gain on the tx makes it feel loose as hell and won't hold at all

What do i need to turn down on the pc program to make it happy again?

[kylelnsn]

Come on son, ditch the 3G and get a proper setup! Drop me a line on the AR7200BX...........

[MarkG_R1]

I couldn't afford it if it was half the price mate, i'll get this thing working if its the last thing i do

[coolice]

My 3G seemed quite happy but today i had a few tail problems

I can up the gain on the tx to make it hold steady and turn slowly fine but if i make a sharp rudder input
the tail bounces like mad when i centre the stick, lowering the gain on the tx makes it feel loose as hell and won't hold at all

What do i need to turn down on the pc program to make it happy again?

Hey Buddy.

When you say it seemed quite happy, does this mean that the bounce you're seeing has only just started to happen and you've never seen it before? Or has it always been there perhaps, but you've never seen it as you're asking the model to do something you've not done before?

If it is something that's just developed, then I'd look at my tail grip bearings and tail pitch control mechanism for any tightness and if nothing found there then look at the tail servo.

What model is this 3G on and what tail servo is being used?

As you're only seeing the wobbles on hard stops I'd suggest lowering the lock gain slider 5 ~ 10% and trying again, as it's this parameter which will have a bearing on how the tail stops and holds from a piro.

Whatever you do don't go Beastx, not much of an improvement over the 3G performance wise, only easier to setup for some. A proper setup will be a Vbar if you ever want to change :-)
.

[tourerjim]

I agree stick with it, once you've work out the fine tuning of the parameters she'll be perfect, there's a lot of us still out there using 3G

[MarkG_R1]

Hey Buddy.

When you say it seemed quite happy, does this mean that the bounce you're seeing has only just started to happen and you've never seen it before? Or has it always been there perhaps, but you've never seen it as you're asking the model to do something you've not done before?

If it is something that's just developed, then I'd look at my tail grip bearings and tail pitch control mechanism for any tightness and if nothing found there then look at the tail servo.

What model is this 3G on and what tail servo is being used?

As you're only seeing the wobbles on hard stops I'd suggest lowering the lock gain slider 5 ~ 10% and trying again, as it's this parameter which will have a bearing on how the tail stops and holds from a piro.

Whatever you do don't go Beastx, not much of an improvement over the 3G performance wise, only easier to setup for some. A proper setup will be a Vbar if you ever want to change :-)
.

I suppose i wouldn't have noticed before because i was being gentle with tail inputs and turning slowly,
I've just dropped the rudder lock gain down from 70 to 50 and tried a bit of delay on the rudder (36)

It seems to have calmed it down a touch but the tail hold is poo, keeps drifting right then after a few left inputs drifts left

I'm trying to set it in rate mode only, not fussed about HH mode

The mechanical setup is all ok, it held perfect with a gp750 gyro

[MarkG_R1]

Sorry its a 450 SE V2 with ds520 tail servo

[tourerjim]

Sorry its a 450 SE V2 with ds520 tail servo

Where if the gyro mounted

[MarkG_R1]

Where if the gyro mounted

Its on the tail boom mount on one thick gyro pad with a strap, I played around with tension on the strap but too tight and it went mad so put it back loose-ish

[tourerjim]

Can you get it to fit as near to main shaft as poss on bottom tray could be your picking up vibes from the tail.

[MarkG_R1]

didn't really want to move it but i'm running out of options

[coolice]

Hey.

The boom block is a source of vibration on electric models, so if you could move it there should be a real benefit.

I'm curious as to why you're not using heading hold mode, as this will hold the tail much better, I'd consider using it if you can.

The tail servo should be ok, depending on use or if its been crashed it could be getting tired, but its unlikely unless you secretly do a lot of piro stuff :-)

You could go a little lower still with the lock gain and as a byproduct be able to raise the normal gyro gain a few points to get a better hold.
Just a thought but you're not using govenor mode on the ESC are you, more of a problem is you are using an Align ESC? Also what throttle curves are you running? Could the tail be sped up through a main rotor rpm increase to give it more authority I'm thinking.

Can you go into heading hold mode and see if that helps at all?
.

[tourerjim]

When I had the 3G on my 450 my only cure was on the bottom tray so be worth giving that a go but try & fit it so your still able to connect the firmware lead.

[MarkG_R1]

Ok, Just moved the gyro sensor to the bottom plate and tried HH mode with tx gain on 66% then on 70% The tail is holding now but still gets a bounce on if im too quick with the rudder

[tourerjim]

Ok, Just moved the gyro sensor to the bottom plate and tried HH mode with tx gain on 66% then on 70% The tail is holding now but still gets a bounce on if im too quick with the rudder

Have you checked the heading hold is working.?
HH tail slider will relax to one side
Rate mode tail slider will centre.