I am sorry I mistakenly typed 25 when I should have typed 12 - 20 amp esc will work for the tail setup.

Thanks KC.

Got the heli flying with the G90 HH gyro. It seemed a little sluggish in the tail, so I was trying some piros left and right to see if it was consistent. Suddenly, it starts to rotate on its own and I couldn't keep up. Before I could kill the idle up, it hit the dirt. Frustrated today. Once my 14 tooth pinion comes in I think I'll install the BL motor and use the hh gyro on the Pixie 20 and new tail motor.

Still can't find the vibration that might have caused the gyro to flip out on me.

Oh, and to top it off, I had all the replacement parts ready to go. The flybar I had, in the new packaging, was of smaller diameter. Threaded it on the paddles, and they pulled right off. Measured the flybar and it was thinner. [:@]

Some days those expensive parts pay for themselves through lack of need for psychological therapy.

After spending the majority of last night repairing the helicopter, I finally had a chance today to fly again and reevaluate the performance of the heading hold gyro. The tail more was still performing normally so I decided to try to hover it again. Nearly all of the vibration was gone and the helicopter actually flew great. Hard collective did not cause a noticeable amount of rotation, and the tail held quite well. There was a need to add a little bit more rudder input as the helicopter didn't change directions as quickly. There was a slight amount of a tail wag at the current setting. When rotating nose right the tail wag went away. When rotating nose left the helicopter seemed to accelerate in its rotation. This seemed like a problem that I encountered yesterday as I was pirouetting to the left and the helicopter suddenly began to spin uncontrollably.
I'm just glad the helicopter is back in the air again. The key is to set up your three and one to run normally and then run the heading hold gyro to run through it.

Mine still wags constantly I am scared to try any inverting

me too, i've got lots of wag - GY240 and Castle Creation Pixie 7P ESC :-(

Since the last post, I replaced the 3 in 1 with a Brushless ESC and motor and used a Pixie 20 brushed ESC and am using the stock tail motor. Going through the 3 in 1 worked, but I didn't like the two gyros fighting eachother.

Mdaitc- could you describe your setup in greater detail? Does your gyro have a connection for remote gyro gain and are you using it? If you dial the gain down, the tail wag should go away. My Eflite G90 is set to about 60% and as of the last flight (last week) it had no tail wag.

I'm using the GY240 with a castle creations Pixie 7P ESC. The problem i'm getting is the tail just won't stay still - when hovering the tail motor constantly increases/decreases, and the tail must rotate 15 degrees either side of center.

when i test the gyro without the main rotors spun up, the tail motor soons spins up to max RPM when the tail moves, and as soon as i return it to the original heading stops - the problem lays when i'm actually flying, and the tail is constantly pulsing/oscillating either side of "neutral".

i've tried different gain positions on the GY240 - around 50% seems about the most useful position, and the stock (and zero) position on the middle pot on the 3-in-1

i really dont think it's a bad tail motor, it hasn't had more than 10 flights, and the behavior hasn't changed since i first converted - although that's going to be my next step to change,

Sounds like you're using the stock 3 in 1 together with the 240. Have you tried turning down the middle pot all the way to CCW and then adding just a little bit? My best results were to set up the stock system to fly holding a heading as accurately as possible without tail wag, then adding the HH gyro without changing anything on the 3 in 1. The way the settings ended up were the middle pot was turned to about 6 o'clock and the bottom was pointing to about 2 o'clock.

yup, i've tried different settings on the middle pot.

i'll change the tail motor next, just in case...