CX2 Blade shakes when turning left.

[paulg1979]

Hi all,

Had my CX2 a couple of days but now it seems to be flying really bad. Trims are making no difference and I can't get the heli to go backwards when hovering. On lift off it really wants to fly forwards and to the left. I'm not sure if the swahplate needs adjusting but not sure where to begin.

I've taken a pic below and it seems the right hand rod is a fair bit higher than the left and the swashplate seems to off at a funny angle.



Any ideas?

[Made2Fade]

Centre all your TX trims then lengthen the left rod in the picture so the swash is level. That should give you more backwards flight. Then just trim it to hover.
Cheers
Lee

[Made2Fade]

Also what do you mean by shakes? Vibration?
Cheers
Lee

[Mart61]

Hi Paul

I found I had the same problem with mine and, on checking the swashplate, if you look at it from the side-on view, it looked as though the front of the swashplate had been pushed down the outer shaft somewhat. I just eased the front up gently and it was then OK.

Failing this I'd try the swashplate levelling exercise I mentioned in my earlier post on the matter:
http://www.hopuphelihobbies.com/_dox...e_Leveling.pdf

Good luck

[paulg1979]

Thanks all i'll give it a try. When I say shaking I mean the lower blade seems to vibrate when the rotor is spinning slowly. This only happens when turning left.

[Made2Fade]

Are your blades tracking in the same plane? Check that. Could be a bent shaft.
Cheers
Lee

[paulg1979]

The problem seems to be the lower blade. If you look at the image should the blade not be sitting slightly higher. If I push the lower blades up onto that black piece (sorry not sure about names of parts) it runs smooth.

[SparkleBee]

Check that you havent snapped off one of the studs that the lower blades locate onto on the lower rotor hub. Its easy to break one off of the plastic lower hub!

[SparkleBee]

Looking at your picture, it looks to me like you may have broken both studs off the lower rotor hub. This lets both lower blades drop down and hence pushes the swash down to an extreme angle. Although im not really sure it would fly at all in that state..... Take the lower blades off and check those hub studs dude!

[paulg1979]

I think you are right Sparkle. I'll take another pick

[Boggy]

take the blades off it looks as though the locating pin from the center hub has sheared!

the right hand servo rod also needs shortening by the looks of it thats why you cant get backwards flight

[paulg1979]

Ok i'll give that a shorten. Heres a pic.

[Boggy]

to set the heli up correctly try this

to start hover the heli.
looking from the tail of the heli
if it drifts sideways.and the trim is not enough to control it. centre the trim....pop off the ball link on the left servo arm. if the heli is drifting right..shorten the rod(screw the loop on further). half a turn and retry hovering if its drifting left lengthen it.
if the heli is drifting forward centre the trim pop off the right hand ball link and shorten the rod...backwards lengthen it.... remember half a turn at a time. be patient and you will get it hovering steady with no trim needed at all.

now the tail. hover the heli it should now be in a nice steady hover if the tail drifts right with no input.. land the heli turn the proportion pot anti clockwise very slightly.left drift turn clockwise..then disconnect the battery..reconnect and re-hover. small adjustments be patient. once the tail doesn't drift...apply input to the rudder and release if the heli continues to turn slightly then slowly settles add gain. if it is reluctant to turn and wags reduce gain.( you can do this without disconnecting each time)

thats copied and pasted from one of my early posts.

[Boggy]

lol dude they are both sheared off!!! the blades should locate on pins coming off the hub between the two screws!! look in the end of your blades are they there? and no super glue wont work

[SparkleBee]

Ok i'll give that a shorten. Heres a pic.

Ha! Yes mate, both studs have broken off. As no doubt you are aware... Replace the lower rotor hub with the E flite aluminium one, and you will be very unlikely to break the studs off that.