CSM SL420 Gyro Drift

[HeliCSR]

HI, I have the CSM SL420 gyro.

It's a pretty good gyro, most the time it locks the tail.
Sometimes it drifts, after I fly for 10 mins, then I hover then I have
to trim the rudder at the radio. Then I fly some more and it gets worse, I trim some more.

The only way to get the trim back to zero, is to land and turn off the power to the heli, and then back on.

My question is the JR G770 3D Gyro as it states:

With its auto-trimming and anti-drift features, trim fiddling is a thing of the past.

Would this gyro do what is says above? Who has tested this gyro?

[stevehonn]

The CSM 420 will drift slightly as it warms up during use, I just use a little trim during the flight.

The JR G770 3D I have is very different to setup, you do have to follow the manual and it ends up at a much lower gain than you would expect to work but it does and very well too. I have had drift problems with my 770 gyro fitted on my Trex 600N, this seems to be because I'm using Spektrum gear and the gyro initialises before the receiver locks on, the down side to this is that if the pulse width from the rudder channel on the TX has changed slightly from when the receiver was bound to the TX, you have, in effect, a little trim active causing drift. The cure in this case is to re-bind the receiver if drift is noticed.

The 770 is a good gyro imho, streets ahead of the 420 and Futaba 401 but, again, watch the setup, piro's can be insane speeds and stops violent.

[helicraze]

It doesn't matter if the gyro initializes before the receiver locks on as you are meant to bind when you first set up your model, then once you've finished re-bind so it will save all the neutral positions.