Hi guys,

I know it's been asked many time.. I'm so sorry I'm asking this again..

I'm using a GY611+9256 on the "E"..

Can some one be so kind to let me know what distance from centre out.. for your tail servo..

have not set up this gyro for a long time.. so a bit lost..

anything that I need to look out for for the tail setup would be greatly appreciated..

cheers
quest

this link could help you
http://www.helifreak.com/attachment...81&d=1181427573

To work here, you shouldn't be crazy, it just helps

For JR tail servos, I put the ball at 16mm out from center.

For your Futaba tail servo, I would start with a similar distance, and then test your endpoints. For maximum resolution, you want the tail servo to be turning approximately +/- 100% without any binding at the tail pitch slider.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

this link could help you
http://www.helifreak.com/attachment...81&d=1181427573

Thanks Engin21,

I've got this doc..In fact I was following this for my Nitro..but the E and N has a different tail servo position.. and the distance for the ball link will be different.. I remember it being 19mm out with the N..

For JR tail servos, I put the ball at 16mm out from center.
For your Futaba tail servo, I would start with a similar distance, and then test your endpoints. For maximum resolution, you want the tail servo to be turning approximately +/- 100% without any binding at the tail pitch slider.

Thanks Justin,
I'm presuming after adjusting the push rod to 90 degree both side..
I also was going thru what finless bob Aurora build.. about the tail bell crank to be 90 degree to the boom.. and that the tail slider will be a bit off-set..

And because I've flip to leading edge.. If I give left rudder.. which way should the slider move.. and I would presume I need to adjust the tail sensing to the same side if I spin the heli anticlock wise..

This is the other part that got me confuse as well..

thanks for everyone's input..

cheers
quest

The direction that the leading edge of the tail blades point is always the direction that the tail will move (unless you have accidentally mounted your tail blades backwards).

Don't worry about what direction the tail servo is moving or the pitch slider is moving. Instead, focus only on the motion of the tail blades.

When you give left rudder stick, you want the leading edge of the tail blades to move so that they point to the right (causing the front of the canopy to move to the left thus initiating a left turn). Similarly, when you give right rudder stick, you want the leading edge of the tail blades point to move so that they point to the left (causing the front of the canopy to move to the right thus initiating a right turn).

When you have the gyro turned on, and when you quickly move the tail of the helicopter to the right (without touching the rudder stick), the leading edge of the tail blades should move left (to counteract the change). When you quickly move the tail of the helicopter to the left, the leading edge of the tail blades should move to the right (to counteract the change).

You want the tail servo control horn to be pointed as close as you can to vertical when the tail pitch slider is located precisely in the middle of it's travel on the tail shaft. You should be able to screw in or out the ball link on the tail pushrod to make this geometry possible.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

many thanks justin..

I remember finless had another vid explaining this.. but just couldn't find again..

this is what I need.. thanks..

time to do some setting..

I'll probably do a short video after setup to let you see if everything is set correctly..

cheers
quest

I'll probably do a short video after setup to let you see if everything is set correctly..

Sure, no problem. I'm happy to help you in whatever way I can.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

Hi,

This is the little video I did.. hope you can see..

and if I got it right

Watch at YouTube

That looks perfect.

But irregardless, when you're spooling up the helicopter, if anything regarding the tail seems odd, be sure to hit throttle hold right away.

However, based upon your video, I think you'll be just fine. Nice work.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

Thanks..

It's all your effort and guidance..

I've got another question..

The slider seems to always wants to creep towards the boom..
why is it so..

thanks
quest

It's just the way your gyro works. Nothing to worry about.

Set the helicopter down flat on the ground. Don't touch it. Now wiggle the rudder stick back and forth real fast a couple of times and let it come to rest in the center.

This should stop the rudder from creeping one direction or the other--at least for a little while.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

I am running a distance of 14mm on a 8900G Tail Servo. Justin is correct, what you are seeing I would consider normal. If you however are seeing a slight drift in flight, double check your trim to see if there is any applied in the radio. If this is not the case, then it may be the pots in the radio.

Avant RC
YS Engines
Spektrum RC
Aerospire
Edge Blades
Insane Canopy
Thunder Power

It's just the way your gyro works. Nothing to worry about.
Set the helicopter down flat on the ground. Don't touch it. Now wiggle the rudder stick back and forth real fast a couple of times and let it come to rest in the center.
This should stop the rudder from creeping one direction or the other--at least for a little while.

Thanks.. that's reassuring..

then it may be the pots in the radio.

Hi Jason.. what do you mean by this.. Sorry I don't understand this lingo..

Thanks
quest

Hi Jason.. what do you mean by this.. Sorry I don't understand this lingo..

Jason is talking about the sensors inside your transmitter which sense the movement of the sticks, and he makes a good point. You've got a JR 9303, right? That radio is a few years old, and assuming your rudder trim is set at neutral, it's possible that the potentiometers or "pots" as Jason said now have a little bit of drift.

But if it was me, I wouldn't worry about it. I think you'll probably be alright.

What do you think, Jason? Nothing really to worry about, right? Don't you agree that he should probably just go for it and try to fly it, but have his finger on the throttle hold at spoolup just in case?

Just curious, Quest, but is this your first helicopter? You have flown before, right? You ask a lot of questions, and there is nothing wrong with that, but in order to give you the "best" advice, it helps to know exactly what your skill level is.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

Hi Justin,

Yes I fly.. no major problem flying.. still land most of the time one piece..

sport flying.. hehehehe..

thanks for the information..

My radio is not exactly old.. It's what we call here.. DSX 9ii..

I got this radio last year.. so I hope it's not the problem..

cheers
quest

Based upon this information, then I personally think the drift you're describing is nothing to worry about.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

Maiden after I got this kit for 1 year

Hi all,

Thanks for everyone's help in helping me sorting things out..

It's been a pleasant build and it flew beautifully..

Some pic to show.. no hard 3D.. hahahahahahaaaaa..

The tail hold solid.. thanks Justin for your patience..

Glad you're enjoying it. But you should probably get yourself a heat sink for the Jive controller to prevent it from overheating. I attach heat sinks to my Jive with something called "Sekisui #5760 Thermal Tape". Others glue them on with epoxy. I prefer the thermal tape because it is removable.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

Yup.. I've got the heat sink.. Haven't got the right stuff to stick it on yet.. Yes I like the removable idea.. They don't sell those stuff here in Singapore.. Or at lease I haven't found them yet..

I need to do some mechanical check.. When I hover it.. It's tilted to the right and back.. I've not done correctly..

Look for the Sekisui tape on Ebay. You can probably get some shipped to you for only a few dollars.

As for the helicopter being tilted to the right in a hover, this is normal for a helicopter whose blades rotate clockwise. The tail blades create a sideways force which causes the helicopter to want to drift to one side. In order to maintain a stationary hover, this force from the tail blades must be counteracted by the rotor disc tilting at a slight angle. You'll notice that almost all RC helicopters hover with the rotor disk tilted slightly to the right. If you land under power, you will always touchdown first on the right skid.

For a helicopter with the main rotor blades rotating counterclockise (i.e. most full scale helicopters), the opposite is true. They hover with the rotor disc tilted slightly to the left. This is why the pilot sits on the right side of the cockpit.

This is simply a result of physics and nothing to worry about.

If your helicopter is hovering slightly tail down, this is a balance issue. Hold the helicopter by the rotor grips and see if it balances horizontally. If not, adjust your battery packs to get the center-of-gravity such that it hangs horizontally.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives