I'm new to helis but have been doing fairly well. My coco lama v4 has a slight problem in hover. It wants to slowly rotate to the right. The rudder trim is maxxed out to the left. What do I do to get it to hover rock steady? Thanks Matt.

Hi Chewy!

I'm not too familiar with your particular bird, but usually to fix the problem you describe - you need to move the tail servo forward or back on the tail, to get more tail rotor pitch. Figure out which direction will give you more pitch, and then try moving it in very small amounts - until it can hold the helicopter stable when no rudder control is applied.

Good luck!
Dave

OK seeing that this is a coaxial heli it does not have a tail rotor so moving the servo wont work (because there isnt one). I tryed to down load the manual for this heli, but there was some problem with Eskys web site. What you need to do is adjust one of the pots on the 4in1. From the pictures it looks like there are two of them but I cant tell which one is for the gyro. Here's what you do: start with a freashly charged battery and run it for like 10 -15 seconds and start adjusting the gyro pot. Think of the pot as if you were looking stright down on the heli and turn the pot in the direction you want the tail to go. Now every time you move the pot you need to unplug power from the 4in1 and reset it so this can take a little bit of time. If you can put a small hole in the body so you dont have to remove it to make each adjustment it will go faster. Please look at your manual to see which of the pots to adjust as it looks like there are two of them and from the pictures on the Esky web site I can tell which one is for the gyro. You will always have some tail drift with this heli, but if you take your time in the adjustment it will tend to drift at the end of the battery charge. Good luck, Jeff

Well, I put on a few more flights on my lama. What I'm finding is the rudder trim will be maxxed out to the left and sometimes to the right. Does that sound like I might need to open the gain up some on the rudder pot?

Kind of odd that it would be all the way left on one flight and then be to the right on another. I would mark the location of the pot and play with it. I have a Eflite Blade CX and have it adjusted so that at the beginning of a flight it flyes just fine, but by the time the battery is done I need to give it rudder to keep it straight. You might even try just turning the pot lock to lock and putting it back to where it was and see it that helps. Sometimes pots can get dirty and moving them helps clean them up. Jeff

Lama v4 has two pots on the 4 in1 unit. One labeled GAIN and the other labeled PROPORTION. Turn all the way to the right the "gain" pot and then turn it to the left about 20 deggrees. Then find the middleway of the "proportion" pot and leave it there. Set the rudder trim at center position and take off the heli ,using a fully charged battery. If it drifts clockwise, turn the "proportion" pot about 10 degrees to the right, disconnect the battery, connect it back and try again untill you have minimum drifting. If it drifts counterclockwise, make the same thing but turn the "proportion" to the left.
During flight ,the battery is discharged and the proportion of the two rotors r.p.m. is changed. The gyro is not head hold ,so the tail starts to drift and you have to give rudder input in order to keep the tail steady.





Kostas from Athens.