I have a centuy electric and can not get it to hover. It wants to tip to the tail rotor side. I went back and check all my settings and as far as I can tell it is ok. I broke a tail rotor, had a spare to replace it. I hope some one can help me. Thamks.

"tail rotor side" ... ? Would that be tilting nose up toward the backside or is the heli rolling to the side (left or right) that the rotor is on.

tilting/rolling left, tilting/rolling right, tilting/nose-up/down is more descriptive ... especially if we have no idea which side of the boom the t/r rotor is on. What does it do when you counter the heli action with stick control?

What version of the Hummingbird is it? or is it the Swift?

Good Luck,
d.tipton

you need to realize a heli will not hover by itself like in the sim. you need to FORCE it to hover. it drifts left - push right to stop it, then left to 'level' the heli; it drifts right, you push left to stop it, then right to '*level'*

during lift off the heli will drift whichever way the tail rotor is blowing if the heli is setup correctly when it is on 2 skids.

if your heli is PERFECTLY setup, it MIGHT hover hands off on 1 skid because the heli needs to be tilted a certain way to hover at that altitude (*neutral position vs ABSOLUTE level)

this will become VERY apparent when you try nose in hover or inverted. level is no longer absolute because of the tail rotor thrust vector.

It is a humming bird. As you are facing the tail the rotor is to the right. It rolls to side. The control unit is in the front of the helicopter, could that be part of the problem.

Hummingbird v4
Hummingbird 3D Pro
Hummingbird v.3
Hummingbird CP & FP

So it's a "hummingbird" is it?

Can the roll you speak of be countered with stick control? I'm trying to get the feel of the severity of roll. If it's just a minor nuisance roll you can just piloting the heli by moving the stick. If it's a little more than that, you can adjust the aileron trim (more left trim) on the TX and take some roll out. If the roll is so severe that full left trim and full left stick is not fully correcting the roll, then you need to make trim adjustments on the heli.

The hummingbird is eCCPM. It requires both the side servos to produce the aileron (roll) function. You need to change the length of these swash linkages so that the swash tilts more to the left (while TX stick and trim is centered). So shorten the left linkage and lengthen the right linkage by the same amount ... go in small steps.

Good Luck,
d.tipton

what tippy said. usually the electronics are mounted up front and that shouldn't cause the problem you describe. in fact mounting is usually a non-issue as long as you're balanced, the gyro is oriented correctly (axis || main shaft), and there are no glitches caused by esc/rx induction.