ORIGINAL: PilotLight
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.
The "signal" (not current or amperage) is given to the ESC that is driving the tail. Whether you use the stock 3-1 and reduce the factory gain to zero, or purchase your own esc, makes no difference. The aftermarket gryo is still "telling" something what to do, and that item (servo, esc) has its own power source to make it happen.
PilotLight,
In reference to your statement, and others, when I purchased my GY401, I picked up a ElectriFly mini-ESC as specified in the 'upgrage' PDF from Hobbico/HeliMax. The one thing that I seem to note in the documentation comparing the GY240 and the GY401 is the fact that the 401 supports remote gain management and mode control.
I noticed in another thread that at least one other user has been trying to put a GY401 on an Axe CP, and has had a problem 'kicking' it into HH mode. My biggest concern here is that the stock Axe receiver and radio combo can't handle the more advanced Gyro.
Can anyone verify this? I haven't rec'd mine yet to install, but once I do I'll be sure to yell either way.
TIA!