Cyclic Hardover,
As RussWisc mentioned, with CF rods bigger in diameter than what you currently have. However, I don't think you'll get them to be rock solid and not vibrate at all. There's alot of force coming from the main blades, it's not the rods causing the vibrations, it's the size of the ping pong balls or whatever you come up with. The smaller the better. Best thing is to look around the kids toys at a mall somewhere and get some ideas there. Hmmmm, something smaller than a ping pong ball, that is the question?
Hold on, I'm thinking.......................................... ..........................................

Got it!!!!
Just use some metal coat hangers with the ends made into a loop, you'd have to construct a center point for all four to meet and connect to. Probably a small piece of hardwood. Here's a picture of the idea, it's only a mock up, of one hanger. But should work and give no vibrations. Also, forgot to mention, you can make them any length you want them.
Let me know if you consider it and if you do, how it works out,
Dave / Choppersrule
================================================== ================================
ORIGINAL: Cyclic Hardover
I noticed it really doesn't seem to matter what heli these are on, those balls are "justa" bouncing and a swayin in the wind!

I'm going to try and find something that maybe lightweight and "oval." If I could find this and make a gear where as the oval is facing vertical, it could be more resistant to vibration. ya think? Orrr what about and extra wide set of landing skids. That may be even better and more stable.
Maybe some of you guys who have no life can come up with something