i have a blade 400. i did some cnc upgrades to made sure all was level and blades balenced. when i throtle up it starts shacking like a wet dog. the vibs settle the more throttle i add but its makes for hard take offs and very hard to learn to hover, any ummm IDEAS?

Poopr,

Now that's a funny screen name for sure. But I'm thinking it has something to do with your work.

Anyway, to help ya somewhat. The best way to track down that type of vibrations is to start removeing things.. Take off the main blades and rotor blades first off. Then spool it up and see if you have any vibrations, if you do, then the flybar is in needs for some fine tuning. Measure to make sure they are the same distance from the head. If it spools up with no vibration, then slap the tail rotors back on. If you have a vibration then, your tail blades need balancing. Doesn't take but a 1/2gram. If your at a point now that there is now vibration. Then you need to recheck your main blades. 1/2 gram can cause vibrations.

Hope this helps ya,
Dave

thanks dave i'll check it out. is amazing how little some things make others huge,lol. my screen name is another hobby. GOLDPROSPECTING= POOOOOOORPROSPECTOR LOL

I check out Pooooorprospector, man, I learn something new everyday. Hope ya hit the big find. Oh, let me know how the vibration problem comes along.
Dave