ORIGINAL: T. Defense
Recently purchased a Blade CP and love it. I have suddenly noticed however GREAT vibration whenever I run it up to about 50%. I put new blades on to no avail. I took off the blades and ran it up to full throttle to see if the main shaft was wobbling but it wasn’t. It seems to only happen when the blades are in place. There is no play in the head unit. Any suggestions??? Am I forgetting something? It’s so bad I can't even get it off the ground. Any advice would be greatly appreciated.
1. Check the balance of the blades, even new ones aren't balanced.
2. Check to see if the spindle is bent.
3. If the main rotor shaft doesn't seem bent as you state, look at the heli from the side and watch the main drive gear that is attached to the shaft. If it wobbles up and down as it rotates, the shaft is bent on the bottom side of the heli. I had this happen once and it took a while to find it.
Once all those check out and you replace what is messed up, it should be smooth as silk.
Doug