Dead duck for now

[mrultralite]

no luck, just goes to hard piro sitting on the pad [hard smooth] even at low revs so i can't even test it in the air. Rudd seems to overreact to any movement of heli. Seems steady when skids are held by carpet or mud
Set up wasn't so bad , no issues of servos moving unaccountably as others have reported [ except tail].

[rexxigpilot]

Seems like you have the sensor direction backward/upsidedown.

Post settings and pics and we can help.

[mrultralite]

I'm inclined to agree, but here is my post from the main board; Maybe i will try something counterintuitve.

Checked servo direction , fwd w/ R stick
servo sensing direction , turn heli L , arm moves slider L, t blade pitch moves heli R
tail geometry, set-up, same as working B400

linear pitch curve, problem seems independent of throttle position.

Thinking the throttle jumps up too. Thinking defect.

[mrultralite]

just did some experiments with the tail , ceramic bearings , new shaft , balanced kdbb blades [down to .001 gms] , microheli grips , still quite a vibe. Switched to stock grips , less vibe , no diff.
Also testing without mains a little calmer [for me] found it jumps on any rudd imput [ in that direction Lor R] even at low speed ,no throttle change.

tried setting Trav adj. to 20 both ways, no diff. hit nitro choice by mistake had to go through setup again. no diff.

Vibe setting on 2 , i'll take the micro grips apart , may be some tiny play.

[mrultralite]

What about servo freq. / pulse ? HG 5084 set 333/15xx , only ref. I could find. It sits there chattering though.

Did some more testing, tail boom was untight, but same deal, just seems really unstable. I tried watching it closely trying to keep it centered but it just jumps hard. What it should do whilst still on the ground , i think is respond to the stick with a bit of movement, which I could correct, as it's not my intention to piro it sitting,.

[360Wings]

Nose goes left, tail slider should go left. Alternatively if your referencing the tail, if the tail goes right, tail slider should go left.

Is it belt drive heli? tail is spinning anticlockwise? i.e. belt turned the wrong way? belt slipping?


make sure you dont have any trim (tx) on the rudder..

[mrultralite]

Things left to try

-main gear wobbles vert. a bit
- ceram. bearing may be in other heli , other set is new
-buy Bx haha.

[NitroAl]

Check to see your tail grips are leading edge control! Never go by the slider movements, Get in the habit of working off the tail blades so if one day you are helping somebody else and they have assembled the tail in trailing edge it will still fly!
It is fool proof method that has saved the heli's of even seasoned veterans who have done an instant rebuild at the field!
The method for working of the blade movements is to get the tail hub and grips vertical and turn the bottom blade 90deg to the back. When you give a left or right stick input the tip of the blade will follow the stick and when you push the tail to the left or right the tip of the blade will move in the same direction as you push the tail!

[mrultralite]

Sorry guys, my bad , had the belt flipped . you were pointing me in the right direction. i had it on right at some point so i stopped thinking about it, but must have changed it messing with the tail.

[mrultralite]

Got this reply from TT, good of them to respond.

Thanks for contacting us. It is a known issue and only happens to the servo of Align and Hitec according to our tests. It is a signal transformation problem of the servo.