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e-BEAM Beam E4 > Your experience with vibration
 
 
MtnMac
Heliman
Location: Roseville, CA, USA

My Posts This: Topic  Forum		The Beam is my first "big" heli. I'm finishing up a new build. Love the kit. But how much vibration is normal? Without main rotors, I'm getting a persistent growl from the main gear. The mesh is good. I feel vibration throughout the throttle range, some points heavier than others. At no point does it seem to hit a sweet spot. What's your experience?

Skids
11-20-2008 Over year old.
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CoasterFuelPhil
Senior Heliman
Location: Rochester, NY

My Posts This: Topic  Forum		There should be little vibration. check your flybar/paddles to see if they are centered and set up correctly... thats the only thing I can think of that might cause vibration. Also anything thats off on the tail will cause vibration since it is rotating at a super high speed.
11-20-2008 Over year old.
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MtnMac
Heliman
Location: Roseville, CA, USA

My Posts This: Topic  Forum		Thanks. The tail is awesome. Super smooth, silent, perfect tracking, very powerful. I was getting vibration before attaching the flybar paddles; just spun a naked flybar. The paddles made it no worse. The main gear can move up and down maybe 1mm and isn't perfectly flat.

Skids
11-20-2008 Over year old.
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petmotel
Key Veteran
Location: DeKalb, IL.

My Posts This: Topic  Forum
Quote 
Without main rotors, I'm getting a persistent growl from the main gear.

Try spooling her up with the main blades on, you can set up a 0 degree blade pitch curve to test it out. The blades act as a flywheel and might well smooth things out.

I think maybe the drive system operating without a load might be causing the growl/vibration. Never run one up without mains before though so I can't say for sure.

Jay
11-20-2008 Over year old.
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e-BEAM Beam E4 > Your experience with vibration
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