ORIGINAL: werew

Markind,
What a gyro's general setup does is gives a signal (current) to a servo to adjust pitch of blades to correct yaw. The current draw rate on a servo can vary greatly, so when you purchase a HH gyro for the Axe CP, my "Guess" is that a gyro's current that operates a servo can operate the Axe's tail motor. The popular Futaba's tail servo (9650servo/GY401 gyro) for a T-Rex is Digital and takes quite a bit of juice to operate.

For those that are thinking about a T-Rex tail setup that doesnt cost $200 and yields rock solid performance(so far), I went with a HS-81MG. It cost me about $100 for both. For a good HH servo, you want FASSST and somewhat strong.

I think Heli-Max gives instructions on how to set it up somewhere, however i forget which HH gyro they recommend.

It took me 1 day and much frustration to figure out what was causing my HH gyro from working, I kept thinking it was my radio's settings. The culprit was sooo simple and i'm embarrassed to say... the gyro was reversed! 1 flip of the switch and it was like magic. The setup is actually very simple... and I came close to kicking my own ass several times.