Tail wagging

[sookainian]

Anyidea why is my T600N having tail wagging during hurricane or funnel ?

Gyro611 with 9246 at 35% gain

[ckoelliker]

Maybe it needs one more clamp for the rudder pushrod?

[erniefritz]

had the same problem on my 600N and 611 setup , try moving the ball on your tail servo , 1 hole closer to the center , the tail is too sensitive , then make your gain 37 again , i am using the futaba star servo horn , not the + horn and i'm in 1 hole from the end , if you use the + horn , you need to have 2 empty holes then your balllink.

the rudder pushrod is just fine with the 2 standoff's that are supplied , just make sure you secure them by sliding a ZipTie underneath so they can't move...

[HeliSat]

Good chance its the thrusted tail bearing. There are other posts on this issue. I found that when you apply a side loading on this setup the blade grips dont turn freely.

To solve this I removed the thrust bearing and replaced with normal radial type (like the inner bearing). Problem solved and tail is rock solid.

[sookainian]

Hmmm but it seems to be smooth when i turn the blade grip by hands.

So could it be still that causing it ?

[Mercuriell]

Absolutely - it's common experience that a tail unit seems perfectly smooth yet when put into use it wags, yet a similar feeling one does not - I guess it's hard to reproduce the loading experienced during a 8-10,000 spin to check whether it does indeed bind in such conditions. Try changing tail units or else check the other threads on HF WRT thrust bearing right way round (bigger ID inner), well lubed and outer thrust bearing LOOSE in the grip, many people have found grinding down the outer rim of this one a touch to have helped.

[benzmaster]

order a RT-11 at quickuk
http://www.youtube.com/watch?v=wUw_7ZwVyrg
http://www.youtube.com/watch?v=2UwYB9bINsw

[Mercuriell]

order a RT-11 at quickuk
http://www.youtube.com/watch?v=wUw_7ZwVyrg
http://www.youtube.com/watch?v=2UwYB9bINsw

Are you satisfied with your RT-11 Ben ?

[benzmaster]

yes :) it works well :glasses2:
you can have a look at this video : http://www.youtube.com/watch?v=EsOHb1CFTU0&mode=user&search=
look at the end, at 08:10 there is a zoom on the tail at about 85% of throttle.
I don't know if it's still wagging a little or if it's normal.
what do you think john ?

[sookainian]

Guys who got that video Trex600NAlan_Danny.wmv video.

http://www.helifreak.com/viewtopic.php?t=36285


If you play that video, you can see Alan and Danny is also having wagging. It is the same kind of wagging i have.

4:39mins can really see it clearly

What cause their wag ? the thrust bearing ?

[Mercuriell]

Tres amusant Benz, love the Gallic intro !! Tail looks pretty good - suspect it's the cameraman wagging more than the tail !!!

[benzmaster]

he he heeee :) and if you hav'nt seen yet, here is the second one : http://www.youtube.com/watch?v=VWpo5Du0r9Q

[sookainian]

Tres amusant Benz, love the Gallic intro !! Tail looks pretty good - suspect it's the cameraman wagging more than the tail !!!

Lets be abit serious about this wagging. There is a wagging problem on the trex600n right ? so to solve it i will need to remove the thrust bearing and use the normal bearing ?

Please assist

[Mercuriell]

Lets be abit serious about this wagging


There has been one hell of a lot of serious talk about the tail wagging issues - suggest you check out:
http://www.helifreak.com/viewtopic.php?t=40939
http://www.helifreak.com/viewtopic.php?t=41309
http://www.helifreak.com/viewtopic.php?t=30207
http://www.helifreak.com/viewtopic.php?t=35157

[benzmaster]

:badair:
http://www.quickuk.co.uk/acatalog/Product_Sections_subRaptor3050_32.html
look at the RT-11 tail rotor assembly. Fast shipping, etc
:badair:
you can also replace the tail by a old one

[HeliSat]

Lets be abit serious about this wagging. There is a wagging problem on the trex600n right ? so to solve it i will need to remove the thrust bearing and use the normal bearing ?


Thats what I have done ... very happy with the results

[Antoinettefelix]

Guys who got that video Trex600NAlan_Danny.wmv video.

http://www.helifreak.com/viewtopic.php?t=36285


If you play that video, you can see Alan and Danny is also having wagging. It is the same kind of wagging i have.

4:39mins can really see it clearly

What cause their wag ? the thrust bearing ?

When I saw the vid, I also thought it was the well known issue, but seems to be the "crackling roll" during the roll he's steering the cyclic stick with his thumb with some small nervous movements......

Don't know exactly but that was the comment on RR.

[Antoinettefelix]

he he heeee :) and if you hav'nt seen yet, here is the second one : http://www.youtube.com/watch?v=VWpo5Du0r9Q

Holy crap! What headspeed are your running?

[benzmaster]

lol about 90% at 0pitch

[sookainian]

Guys who got that video Trex600NAlan_Danny.wmv video.

http://www.helifreak.com/viewtopic.php?t=36285


If you play that video, you can see Alan and Danny is also having wagging. It is the same kind of wagging i have.

4:39mins can really see it clearly

What cause their wag ? the thrust bearing ?

When I saw the vid, I also thought it was the well known issue, but seems to be the "crackling roll" during the roll he's steering the cyclic stick with his thumb with some small nervous movements......

Don't know exactly but that was the comment on RR.

Haha i wont believe it is Alan. Because his flying is those smooth 3D kind and not those jurking. Unless they are trying to hide something from us :mrgreen: