E-Flite Power 15 high RPM vibration (Full Version)

All Forums >> [Electric Aircraft Universe] >> E-Flight Power Sources



Message

Striker -> E-Flite Power 15 high RPM vibration (1/30/2013 5:32 PM)

Hi Guys,

I know this is a shot in the dark question but dont know if anyone here has the same problem.

I have put together an Acro Master and got a new E-Flite Power 15 brushless motor for it. I have not flown this thing as yet all because I am getting a violent vibration at high RPMS just around 6500 RPM.

I have a perfectly balanced APC 13X6.5 prop and an E-Flite prop hub. If the battery's peak power drops, it runs OK. I can reduce my throttle by about 10% but that's a band aid patch approach which I hate, it does this 2 clicks below full throttle.

I have read that some people said these motors are not balanced well etc. All I did to it was to use my vice and a socket to push the shaft to the other end since it has to be front mounted. I am an electronic tech and a huge mechanical background so I cant see it being screwed up by that.

Anyone had these issues with this motor? This is annoying me to the core.


Thanks.



whitecrest -> RE: E-Flite Power 15 high RPM vibration (1/31/2013 10:27 AM)

Is there any vibration with the prop off? That ought to rule out any fundamental motor imbalance. I would think a mechanical imbalance in the prop or hub would be evident well before 6500RPM. It might be worth trying a slightly smaller prop or programming higher ESC timing. Timing issues usually crop up when a motor is being pushed.

Another thought is to check the motor mount for any looseness or play.



Striker -> RE: E-Flite Power 15 high RPM vibration (1/31/2013 1:31 PM)

Everything is tight and balanced, I am beginning to think after doing some more testing that its a resonance issue.



chuckk2 -> RE: E-Flite Power 15 high RPM vibration (2/7/2013 11:22 AM)

The ESC may be faltering at higher settings, or the battery cannot supply the current required.



Page: [1]

Valid CSS!




SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.
0.15625