Blade 400 spinning and un flyable.

[The Dude.]

I'm very new to helicopters and inherited a Blade 400 from a friend.

I've replaced two servo's, the speed control and the gyro. Everything works fine on the ground but when I try to take off the tail spins in one direction or the other. When I try to straighten it out with the rudder it just takes off in the other direction uncontrollably. When I advance the throttle the gyro light is solid, when I start using rudder input the light starts flashing. My friend installed and set up the Gyro but I don't know much about them so I don't want to just go and start adjusting the thing without knowing what's going on.

[Lowe]

I'm having the same problem with mine. Just installed new Hitec servos but I have the stock gyro. The tail holds briefly during spool up bot as soon as I give any rudder input it spins like a top. I had to do some reversing when I installed the servos, any chance that's effecting it?

[Woody_99]

Probably need to check the direction on the gyro switch.

More details in some of the early post and setup information, but I've had that happen when swapping servos, etc.

[The Dude.]

I had my gyro switch wrong. Reversed it and everything was fine.

[Lowe]

My problem actually ended up being improperly installed tail grips, but glad you got things working.