trex 450 wobbling

[james and]

hi to all just got a used 450 i put some training gear on it to learn on but when i get about two foot off the deck it starts to wobble , do you think its the training gear thats making the heli wobble , the training gear is for a trex 500 but i have only used two rods with 4 large balls on the ends .

[Delarado]

Is it FB or FBL?

Have you checked blade tracking?

If FBL check the training gear isnt causing vibrations and upsetting the FBL controller.

If FBL check everything mechanically, pitch etc - also look for anything out of balance that would cause vibrations.

[james and]

its a fb one blades been set up , i do think its training gear but i feel i can not take it past two foot

[james and]

can not take the training gear off cos i am still learning and do not trust my self

[Delarado]

is it posible to get a video?

Training gear ALWAYS wobbles horribly. However the heli itself shouldnt really.

Theres nothing I Can think of thatd make the heli wobble at a particular height. What throttle curve do you have? Try running a difference curve, could just be the motor/training gear combination generating a freqency the heli doesnt like a certain RPM.

[james and]

just off to pick kids up from school will do a video later and thanks for your help

[David Drew]

The heli is probably OK - it's you wobbling!!! - nerves.

Training balls are a complete pain and do cause all sorts of handling issues.

At two feet you are getting out of ground effect so maybe that's something to think about. Take it higher and see if it stabilises.

Once out of ground-effect there is no reason why it should wobble at any particular height.

Best of luck

[muscleflex]

is it a 450 pro? it could be low head speed?

[pjbrazendale]

As said previously increase head speed and remove training gear I had wobbles until I did this on my 450, she now flies lovely. What pitch and throttle curved you using?

[james and]

Just got back and its raining so will do a video over the weekend and get back to you all thanks for all your help will look into the pitch curve

[pjbrazendale]

Try using something like 0-45-85-85-100 for throttle curve and 36-42-50-75-100 for pitch curve I'm still learning an the high head speed works well for me here.