E Sky EK2-0407A HH gyro mounting

[Heli Yea!]

Hi everyone,
this is good info if you plan on getting the EK2-0704A HH gyro. It must be mounted on it's side with the purrdy red and blue lights facing the tail, and the wires pointing to ether side of the heli. If you mount it like the EK2-0704 professional gyro (on it's back) it will not work.
Also, before you spin up (after gyro initalizes) you must adjust your rudder trim(left/right yaw) to a point where your tail servo arm does not move with the gyro switch up (off) or down (on). Hope this helps I'm new here and putting in my first 2 cents.:thumbup:

[DierWolf]

Adjust trim?? For what???

If Gyro and servo is adjusted properly trims should be in the middle and not need adjusting at any time.

[Heli Yea!]

It requires a touch to left or right like 1 notch or 2 because the servo arm will move forward or backward very slightly and very slow in one way or the other when you flip the switch on and back when you flip it off. This is only on the 1st setup and the trim is centered but 1 or 2 notches to the right or left to fine tune a stopping point for the servo arm when the the switch is on or off.

[DierWolf]

Servo will always move when the bird is stationary and not spun up... Proper proceedure is the keep the trim in the center and move the tail servo ever so slightly up or down the boom to trim it completely out.

[Heli Yea!]

AH HA,
I was wondering why no matter how I adjusted the servo on the boom the tail would spin. I didn't know the servo would move when not spun up when you flip the switch on. Now I'm waiting for my batts. to charge used all 3 working on the heli yesterday :arggg: while the power was out. Thanks I'll give it a try and and let you know.:thumbup:

[another_finn]

DW, I think you're talking about setting up the tail while Heli Yea! is talking about adjusting out the creep in HH mode.

The proper procedure is indeed to first find the spot the gyro thinks is neutral - and it's not always perfect center trim. If you don't do this, the gyro thinks you're giving slight rudder input and your tail will creep in HH mode. The servo should not move without stick input while the helicopter is stationary.

Once you have your "neutral" trim, then it's time to flip into rate mode and adjust servo position so the tail will not wander.

[Heli Yea!]

yes, Im setting up the gyro. been doin it since my last post above. :arggg:
I'm givin up for now I put the stock gyro back on and it flew like a champ till I crashed into the couch.:roll:
now it's time to fix the 4#3b just got my parts today! As for the belt it'll have to wait until the rest of my cnc head comes cause I broke the stupid plastic fly bar case set again. DOH!

[DierWolf]

you guys are making this much more difficult than it is..

perhaps this is why you all dont have good results with the Esky Gyro's.... when i turn on my heli my tail servo always creeps towards the boom block until it stops (this is in HH mode).

this is now at max pitch ready for when the rotors spin up so it doenst do the wild swing and its ready for whatever the rotors have in store for it in terms of torque spin.

my heli stays dead still during the entire spinup and in flight i dont need to adjust EVER!.

not once have i set up a gyro in HH mode that the servo didnt move what so ever when not spinning up.

In any case whatever works for you guys... all i know is if your tryign to setup an esky gryo and constantly think its not working becuse the servo creeps on its own when not spun up your going to be there a very long time messing with it for no reason.... simply put the thing on the bird, keep your rudder trim centered (switch the HH off on the radio) put your horn 90 degrees out... spin up the bird and move the servo up and down the boom until it holds properly, tighten down the servo and flip on HH mode (the servo will CREEP! dont worry about it) just fly the darn thing :)

PS when i say servo will creep i dont mean the Tail will creep... tail should hold solid as a rock and when you do a piro and let go the rudder the tail should stop immediately and hold its position as well.

[another_finn]

Not difficult at all - like you said, just center the trim and never touch it again. Then flip to rate mode and find the correct servo position for a rock solid tail.

The only difference is, we're talking about center trim as the gyro sees it. My 401 won't even initialize unless I click about two points of sub-trim, which it sees as "no rudder input". It's almost impossible to get zero creep on the Esky Tx, which probably contributes to the 0704A gyro's poor reputation. My DX7 has enough resolution to do it, and the tail will be more solid if you take the extra three seconds to find the neutral spot ;)

[DierWolf]

Well my bro and i still using stock tx on our belts and on my Exi and tail does not go anywhere, fwd, backward, and side to side, stays right where it was put and all using the old Esky HH gyro..

The new one i have on the OPtic 6 for my Esmart found no difference in setting up the gyro, i didnt even touch the gyro gain on the radio its still set to INH (whatever that is)

[Heli Yea!]

I have tried to set it up w/servo creep w/o servo creep but all it does is spin wildly in one direction or the other. If you use the rudder stick on the Tx to correct the spin it will spin the other way add keep spinning that way even with hands off and vice versa with the switch on or off. I just cant find a neutral point to mount the servo with this gyro. As I have said above I put the stock gyro back on and it flew like a champ. I know how to find the point on the tail for the servo the stock gryo took me all of about 1 minute to remount and get to hold. I'm starting to think I got a bad HH gyro but, I'll give it a try again:arggg: when the rest of my head arrives.(Tues./Wed.) I Know how easy this should be and that is why I'm starting to get very frustrated :mad: with this:bs.

[Heli Yea!]

Is it too vulgar if you flip off the gyro?:)
LOL

[Real_Sparky]

Do you have it mounted this way up.
So that if you read the writing on it, it reads up like this
http://www.youtube.com/watch?v=earg2CcaTGo&feature=related
Because it sound like the gyro is upside down if it contually spinning.


Darin

[Heli Yea!]

Thanks Sparky.
No, I Had It mounted wires on the bottom not on top great info!:thumbup: I'll try it this way correct side up, that'll probably do it, but also mounting it on the side of the bird BRILLIANT! I was also thinkin' the problems could be coming from the balancing act of being mounted on foam tape where the stock gyro sits. The sides of the HH gyro are not exactly flat and can move front to back I'm sure and no good place to anchor it down with the carbon frame ether. So guess there's no need to figure out a better place to mount it! That was going to be my next project done before even starting. Still gotta wait to try it though. Waiting for parts is like a kid waiting for Christmas and I'm gettin' all antsy in my pantsy!

[DierWolf]

LOL again us assuming he mounted it right was the cause....

[DierWolf]

Totally disagree on what he says in the video about mounting it on the left or right side requires flipping of the reverse switch on the TX.

The reverse switch on the TX does absolutely nothing to the gyro itself, it only switches which way the tail servo will move with rudder input, it does not effect the direction the gyro is operating.

it makes no difference if you mount it on the right side or left side of the heli, the gyro works in the same direct.. with writing reading upwards it doesnt make a single difference cockwise on the right side of the heli is the same as clockwise on the left side of the heli.

So just forget about that part he mentions in the video about flipping the reverse switch on the stock TX.

also really dont know what he is getting on about with the gain not working when the channel 5 wire is plugged in.... The switch on the transmitter does work from switching it from HH to Standard, i do it all the time and turn off HH when doing foward flight and have tested it myself on a battery that was full and flew it in rate until battery was going dead and you would loose tail control, at that point you switch on HH and its rock solid again, which proves it was in Rate mode.

So again, dont fully agree on things he is saying in that video.... especially when he is moving the gain pot and looking for servo movement, thats not what gain is all about in the first place.

[Real_Sparky]

DW
I agree with your last post.
I found that part of the video a bit strange myself. Mines on the other side and my switch is the same was as his. The only way to reverse this gyro is to mount it upside down.
But it made my point about which way the writing should go so i figured what the hell.

Darin

[Heli Yea!]

Geez guys,
Don't I feel smart giving myself all that frustration for no reason as DW said earlier.
I had those "purdy lights facing the tail" just upside down DOH! :DOH This time it will be a breeze to set up as it should be!:thumbup:It never crossed my mind to flip over the HH gyro just turned it on, saw it worked on its side, and went with it. Also. yes flipping the reverser on the Tx only reverses servo movement not the gyro.

[DierWolf]

It really is a good gyro, dont know why people make such a fuss about it, have tried many and they all lock and stay put prefectly fine for me... really dont see no reason to go out and buy 100+ dollar gyro's if its not needed, not everyone flys backwards and 100 mph doing rolls to ahve to worry about a Super - D - Duper cant make no mistakes Headlock Gyro.

Shouldnt really be flying in HH mode anyways, just makes things more difficult and clumbsy looking in your turns.

TAKE THE TAIL OUT OF BONDAGE! i say :)

[sutty]

There is a lot more to disagree with than just the left side, right side, nonsense. Like you said DW, clockwise is clockwise and anticlockwise is anticlockwise, the gyro doesn't know which way round it is, just which way it is turning! If you rotate it over the body, to pass it to the other side, so the connector still faces the rear, it will now sense the motion in reverse, thereby incorrectly providing positive feedback, but reversing the rudder won't fix this. That's why most posts with regard to this gyro explain clearly not just that the writing must be vertical, but that it must read upwards. So in other words you must rotate the gyro around the main mast to the other side to keep the writing reading up if you want to put it on the left hand side.

In my opinion, but I would be interested if anyone can explain otherwise, it shouldn't really matter where the gyro is mounted either. It is unable to sense lateral movement so it could not tell, even if it were on the end of the tail. If the heli rotates 5 degrees at the shaft, the tail rotates 5 degrees also, and therefore so would the gyro. If it takes 5 seconds to rotate at the shaft it takes 5 seconds at the tail, therefore the rate of rotation of the gyro, in the plane in which it can sense motion, is the same anywhere on the helicopter, so I cannot see the benefit of being near the shaft. As I say though, I would be interested if anyone thinks otherwise and can correctly demonstrate this, I am always pleased to learn something new.

Then there was the over-sensitivity issue, when the heli isn't free to move? Of course there is huge servo movement, the gyro is saying, "hey I just got stick input and I didn't move, it must be windy holding my tail still, I know I'll add a little more until I do move, just like the pilot wanted, what still no movement, I'll add a little more. Good heavens, I have gone full travel and I still haven't moved, I wonder why that is, the pilot must be a beginner, still I tried my hardest to help him." I know instead let's take the transmitter to pieces and start doing a mod! Oops hang on, the heli can't move, I wonder if that could be it! He could always try flying it.

Sorry, being a bit sarcastic there, but there are many much better videos out there about the 704A, which in my opinion works perfectly well and is not over-sensitive and requires no modifications at all.

I reckon just make the writing read up and stick it wherever you want to, it will work perfectly well. (Well maybe some thought could be given to minimising vibration but I have no idea which part of my helicopter vibrates the most anyway.)

[Heli Yea!]

How do the A and B versions compare I know the new features but was wondering about performance and if B version would be worth getting as upgrade over the A version?

[DierWolf]

Dissagree sutty.

just because you rotate the gyro to the other side doesnt make it sense anything different so long the writing reads upwards.... picture it in your mind clockwise is clockwise no matter how you turn it so long the writing stays the same...

thats like saying because your nose in the gyro will work backwards at that point, it does not... or better example saying if you rotate the stock rate gyro 180 degrees on its base it will work backwards, no it doesnt.

point is nothing has to be done to the gyro or switches if you place it on the right side or the left side.

As for location itself, he says in his video at the shaft would be ideal.... i dont believe so what so ever, at the shaft is where it will sence the movement even less, it is common knowledge that the Distance travelled at the center of an object is much much less than at its outter reaches... so actually the IDEAL! spot for a gyro would be at the end of the tail, this is where it would sense the movement First not last so at the tail boom support is perfectly fine and a hell of a lot better than it would be at the shaft location.

everyone has to remember that these "Non Pro" video's should be watches yes but also you need to pick the bull out of it .....

[DierWolf]

How do the A and B versions compare I know the new features but was wondering about performance and if B version would be worth getting as upgrade over the A version?

hmmmm, i cant say for sure, i have the B version on my Esmart which is a 600 size bird and its holding it rock solid, i had the A version on the Esmart as well and worked just as well maybe a little bit bit too sensative since its so small on a large heli.

The B version i like more for the following reasons

1. it can mount like you mount the stock rate gyro
2. has servo limit pot
3. has reverse switch

Other than that i cant really say, all i know is it holds and holds good.

you definately dont want the B version if your usign the stock TX as it doesnt work with it.

[Heli Yea!]

Thanks DW,
I am running the stock Tx, so I'll stick w/ the A version till I get a new Tx.:thumbup: If it ain't broke, break it, that'll fix it!

[DierWolf]

should be able to find A versions still, they stopped production on the A.