I have a Jr Venture 50 with gy401/9254.....Should the tail be locked in solid in a hover? Nose rotates to right very slowly. I am fairly new to helis and this is the first HH gyro I've had. From the posts I've read on here and else where, the tail should not move unless I move it. I don't know how it acts in FF because I haven't got the nerve to do that yet. Just hovering now, side-side, etc.

On gyro, limit is maxed, delay is 0, ds is switched on and gyro sens on radio is 100%. Linkage moves freely. I'm not getting any tailwag,hunting. Radio is in HH when I turn on heli and I don't switch out of HH.

Is this normal for the nose to rotate ever so slightly because of torque or could a trim adjustment take care of this?

Lesse... First, YES, it should lock in solid and not move a hair.... Couple of things to check....

First, make sure your trim is centered, revo mix off, etc...

100% gain is actually too much... It won't make it wag with the 9254 cause it's so quick, but it does make it very hard on the servo since it has to correct so much... Drop it down to like 75 or so, should still lock in solid but be easier on the servo...

The big thing I've seen cause this is mounting on an inappropriate surface. Did you use the grey gyro tape that came with the servo? Sometimes if that still gives problems you can try doing gyro tape, thin balsa, gyro tape, then gyro... Bottom line, try mounting it differently.. (Using different tape, more or less tape, etc..)

Also make sure there isn't a lot of vibration in your heli.. If the blades aren't tracked, balanced, etc... Or even if your training gear is causing vibration, that can make it drift....

(you'll never touch the trim on a 401 once it's powered on... It'll read the "center" position when it inits, and after that you don't want the trim to change at all..

Ok,,,,i'll try dropping the sens down a little....gyro is mounted in front per manual and I used one square of the double sided tape that come with gyro. No revo mix, No training gear. Trim is centered and t/r arm is 90 degrees to linkage and it's started up in HH and when I move it after starting I do the l/r rudder input 3 times quickly to reset center. Thanks!!

How far out is the ball on your servo arm? Is the engine running rich?

Try this.

http://www.futaba-rc.com/team/team-tip-002.html

Try it in rate mode. Heli should hover solidly, with only a very little weathervaning if enough Xwind. Weathervaning should be about equal with either side presented to the wind, and should stop when fuse is aligned with the wind. If the heli wants to rotate in one direction regardless of Xwind, and tends to keep going around 360 (even if slowly) you need to adjust the link to achieve the above. A small error is easily masked by the gyro, but makes the servo work overtime, and can limit travel when in HH.

Elmo Te

Ball link is 13-13.5mm from center of servo arm. Engine is still a little on rich side. I have been gradually leaning it out. Engine has 9 tanks through it. Rpm seems to pretty good but I don't have a way to check it yet.

I will try adjusting the ball link on the t/r and see if that helps. And I will also try dropping the gain down in the radio from a 100% to 80% or so........Thanks!!

I'm almost certain its b/c you are running the engine rich. It seems 90% of gyro problems are due to out of tune engine