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12-02-2005 09:52 PM  12 years agoPost 1
slider46

rrProfessor

Ocala Florida

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I have a hummer v3 fp and sometimes when I spool up the main rotor to lift off the whole bird starts the wobbles. If I set it back down and lift off again it will stop. Last nite it seemed to do it more often than before. I have not crashed it or hit anything YET, Could it be something (like a bearing) is wearing out fast? I have maybe 20- 12 minute flights....
I have checked the blade tracking and it's good, just not sure where to look.......

Tom..... No "D" flying....

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12-02-2005 10:07 PM  12 years agoPost 2
3d type

rrVeteran

Bridgeport,CT USA

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make sure the blades arent too tight and are not able to traighten out all the way.

how'd the ground come up like that ?

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12-02-2005 10:37 PM  12 years agoPost 3
garage_flyer

rrKey Veteran

Elk Grove, CA (Sacramento area) U.S.

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3d Type is right on the money. Also if you are talking about a slow but big wobble, it could be caused by lift off too fast. When you just start to fly you said the bird was swing to the left and I said that was ground effect. The faster you lift from ground the lesser ground effect you will have. I am sure you learned that already. Now you are experiencing the opposite. Because you are "too good" at it you are lifting off too fast. I can't explain why but I had the same experience. I think is caused by skids not lifting at the same moment that the motion of lift off is interrupted by it. Go easy on your left thumb (throttle) you should cure it.

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12-02-2005 10:41 PM  12 years agoPost 4
slider46

rrProfessor

Ocala Florida

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I'll go check the blades, but I haven't tightened them since I put it in the air... GF you might be right because I used to ease it off the floor now that it's all dialed in a do lift off a lot faster because I know what's going to happen MOST of the time.....

Tom..... No "D" flying....

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12-02-2005 11:06 PM  12 years agoPost 5
garage_flyer

rrKey Veteran

Elk Grove, CA (Sacramento area) U.S.

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Hi, Slider, saw you just picked up a Blade CP off RR. You got the DHS for sure now ! Good for you (bad for your wife). Don't forget the warnings I sent you on the tail motors. Don't wait until it completely dies before replacing it. It may take your ESC with it. When you starting to have a tail drift, that's a sign of your tail motor dying. Or you can just replace them every so often.

Once again, Good luck and have fun!

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12-03-2005 12:13 AM  12 years agoPost 6
slider46

rrProfessor

Ocala Florida

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The Blade has the dd motor upgrade for the tail so I hope this will help.. I do have the DHS big time. I wonder if my wife will notice 2 helis in the shop, I'll just tell her they breed when left in the dark.....
I think it is my quick lift offs that got the little birdy wobbling as I just flew it without a problem..... I want to run another pack thru it before I'm satisfied..... I guess it doesn't pay to get better with a heli....

Tom..... No "D" flying....

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12-03-2005 01:00 AM  12 years agoPost 7
FlyrEric

rrApprentice

Gulf Coast FL

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The wobbles are not uncommon for me, I fly a V1 and I usually find that it's one blade being tighter than the other (not that you can ever get them perfect). A nice easy spool up and smooth take off usually "shakes" things out. If you spool up too fast the little beast just doesn't compensate well for the imbalance.

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12-03-2005 02:11 AM  12 years agoPost 8
ckohler

rrNovice

Northford, CT - USA

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I used to have problems with wobble all the time. I upgraded both of my FP Hummingbirds to brushless motors with wooden blades and haven't had a problem since. Of course, now I can't fly them in the living room. They fly great outside though!

"Fly today - work tomorrow."

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12-03-2005 09:53 PM  12 years agoPost 9
slider46

rrProfessor

Ocala Florida

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Well I have flown several times today and this is what I have come up with . If I spool up fast and lift off, I get the wobbles.... If I bring up the head speed slowly, no wobble... once the head speed is high enough to make it light on the skids I can jump it off the ground with no problems.... I'm up to a 4'-5' hover now and it is getting smoother as I get away from the ground effects... but I'm getting closer to the ceiling in the basement, I wish I had a little more room to practice in.... 10x10 is kind of tight to hover in......

Tom..... No "D" flying....

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