imora99
Heliman
Location: El Salvador
| I just got my first helis ever, a couple of ECO-16. I figured since I can't find any parts locally, I should have enough spares just in case, so why not the complete heli. . I am learning to hover still and barely get a couple of inches off the ground for a few seconds with training gear. Everything was running right on target, no vibrations, perfect tracking (#67151 FG Blades), barely warm temperatures on the motor(H16) and ESC(CC HV45), hovering would begin at 1250-1300 rpm, at 69% throttle (JR 8103). Then, I decided to use the stock wooden blades that come with the ECO16, since they are longer then the FG I thought maybe they would give me more stability and make it easier to learn to hover. So I stuck the whole weight in the groove, put some tape on top and to get them balanced as well and tried them on. I slowly spooled up, and everything seemed to be fine. Throttled up a bit more, and slowly increased to hovering speed and it lifted off. I had it at around 3" or 4" off the ground and immediately noticed how stable it was, it just stood there like if it was still on the floor!!..., for few seconds (less then 10) it was so stable I couldn't believe it. Then it started to vibrate very subtle, I spooled down since it had never vibrated at all and decided to check what could be the problem. I checked everything, nothing seemed to be wrong. I spooled up again, only this time it started to wobble immediatelly so violently not even at 10% throttle that I had to throttle down. Despite cutting off power it continued to increase the wobble while stopping to the point that the blades hit the boom a couple of times. After that, no matter what I try it will wobble incontrolably as soon as I start to spool up. I have tried everything that I can think off. First I changed back to the FG blades, then replaced the boom, used a 3rd. set of wooden blades that I have, replaced the feather shaft, replaced the main shaft, the main gear, heck even the whole rotor head!...I even put together the other helicopter, replaced the stock swash with the aluminum upgrade at 120° and I have the same problem!!...this are brand new helis, never crashed and by now I know they are put together exactly as the manual indicates, moreover, I know the heli was spinning great before I had the great idea of trying the wooden blades. I am sorry this is such a long post, I just have run out of ideas and I would really appreciate some help. Thanks to all for taking the time.
David |
) and continued increasing throttle all the way to hovering speed and it showed no vibration whatsoever. I throttled back down, stopped the blades and tried once more, and again the wobble started. Proceeded to grab it by the tail this time and started tilting carefully and once more I was able to achieve enough head speed to hover again.
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