General Trex 250 spools up while using rudder trim lever. Please help newbie

[dcmjtrex250]

While attempting to correct the rudder trim on my futaba t6 to make the tail neutral the heli spools up! Is this crazy or normal? Yes I'm a newbie and willing to learn so I'm all ears!

1. Main blades are not connected to heli
2. Throttle stick on transmitter is at zero

 

[Tony]

Can you get us a video of what it's doing? More on the Tx than the helicopter? It will help explain this a LOT more.

 

[dcmjtrex250]

Can you get us a video of what it's doing? More on the Tx than the helicopter? It will help explain this a LOT more.

My mistake I meant to say I was adjusting the channel 3 throttle trim lever. See video below

 

[callsign4223]

You are changing the wrong channel on your transmitter. On Futaba transmitters channel 3 is designated for throttle. If you are trying to correct a tail issue you need to be changing the trim on channel 4.

 

[Tony]

I agree 100% with what Matt stated above.