irishcarbomb

My Feedback: (4)

Hey guys,
Wondering what the problem might be with my hummingbird...it will get off the ground but all it wants to do is spin. tried it with and without the gyro...same thing. i'm stumped. thanks!

rob o'

irishcarbomb

My Feedback: (4)

well atleast i thought i fixed it...

justin_92_92

My Feedback: (2)

whats your tail situatin? is is stock or dd.

Detcord

flip the gyro... i had the same problem, and by flipping the gyro it now works, my heli still spins(bad tail motor i guess) but the gyro works...

camm

Sounds like a problem I had, turned out to be one of the screws that hold the tail motor had come adrift alowing the motor to come away from the blade drive gear. relpaced the scraw, problem went away,

worth a check :-)

irishcarbomb

My Feedback: (4)

well...i replaced the hummingbird mixing board as suggested...didnt fix it...talked to century and they said try a new tail motor...

tweaksalot

buy DD tail motor, and if you have the century gyro, make sure the C on the century label is the closest thing on the ground

irishcarbomb

My Feedback: (4)

where can i get a DD tailmotor? asuuming you mean direct drive?

Jerrykl720

u can find the dd motor from walmart for $5 ( the ele tooth brush from oral-B)


Jerry

marked23

>ele tooth brush from oral-B
Sweet! I've been paying $10 for these from my LHS. I'm gonna go brush my teeth right now.

Rob O',

Basic checks:

Checking Gyro:
[ul][*]Disconnect main motor.[*]Spin-up a bit just to see the tail motor turn. Then...[*]Rotate the heli to the right (clockwise when viewed from above), tail motor should slow, or even stop.[*]Rotate the heli to the left (ccw), tail motor should noticably speed up.
[/ul]
If the gyro checks fail, then you probably need to flip over your gyro.


Checking Rudder:
[ul][*]Disconnect main motor.[*]Spin-up a bit just to see the tail motor turn. Then...[*]Move rudder stick to the right, tail motor should noticably speed up.[*]Move rudder stick to the left, tail motor should slow, or stop.
[/ul]
If the rudder checks fail, then you need to reverse your rudder channel and check both the gyro and the rudder again.

Which way is it spinning?
Left (ccw): You need more speed on the tail motor. Motor may need to be replaced. But first try adding a ton of sub-trim (or regular trim) to compensate it out.
Right (cw): You have too much speed on the tail motor. Good news! Your tail motor is just fine. Just program some sub-trim (or regular trim) to make it compensate less aggressively.

-Mark

irishcarbomb

My Feedback: (4)

mark,
everything checks out, it spins CCW...tried compensating with trim, but doesnt help...will try picking up a toothbrush later today to see what happens...

kartmark

OK if I use a toothbrush motor, what tail rotor do I use? Do I use a stock one? If so how do I attach it?

Thanks

tweaksalot

Just buy a GWS DD tail motor from like Allerc.com or whereever with 3020 or 3030 rotors. Its like 10 bucks and comes with 2 rotors. . .

marked23

...Or if you already have the DD motor, your LHS will have the 3x2 and 3x3 props for about $1 each. The props have an interference fit to the motor's spindle. You can add a dab of CA to keep it locked on, but I don't.

-Mark

irishcarbomb

My Feedback: (4)

well...went to the lhs, picked up a replacement tail motor...still didnt fix it...had the guys up there fly it (i'm new to helis, flown fixed wing for 6yrs) had the answer in a few mins...
3 Cell Lithium pack...this thing is a blast, now its just up to me to learn...can hold a hover for a bit, but i think a broken paddle was a cause of some other problems late on...thanks all for the help!

tweaksalot

what was the problem?

irishcarbomb

My Feedback: (4)

don't know...i guess it was too heavy for the pack that came with it...(i am running a regular Rx without the case)...but it flies great now