Erratic vibration??

[Zoobie]

I have a vibration I cant seem to eliminate. The main symptoms is the horz stab on the left side vibrates up and down. It is enough to upset my gyro though. Sometimes if I play with main blade tightness it goes away, but can be back next time I arrive at the field. I have also noticed that if I pull the main grips apart quite hard there is play, basically the very first bearing pulls very slightly out of the grip. I currently have the plastic grips.

Any suggestions

Thanks.

[vicrc]

Have you tried changing out the dampers? Sometimes they just need replacing. I noticed mine was pretty worn out. I changed them and the new ones come with metal inserts.

[Zoobie]

I have not flown enough yet, but that might be an idea, this was a problem on my Trex.

Thanks

[BL]

Have you tried changing out the dampers? Sometimes they just need replacing. I noticed mine was pretty worn out. I changed them and the new ones come with metal inserts.

vicrc,

Do you mind to post the link for the metal insert?

[istandalone]

could be belt tension too. the hurri likes the belt a bit on the tight side. at least mine does.

[Zoobie]

Did yours vibrate with a loose belt? because I did notice that it occurred after that weird tail thing that the hurri does.

[WuTangcl]

I had it too after a crash and rebuilded my hurri,

Belt tension is very importent, but also the tail blades balancing.

First I had belt to loose, tightened it up a bit and the vibration was almost gone,
not to my satisfaction though... Gyro was still having a hard time..

I had painted my tailblades and forgot to balance them again,
it was minimal but after a small piece of tape it was completly gone...

[vicrc]

I ordered the dampers from ReadyHeli, their picture of it was black indicating the original plastic inserts, but when I got mine they were silver metals. Both my o-rings and plastic inserts were a bit damaged from my abuses.

[Zoobie]

Does anyone know if dampers come with the readyheli "ultimate performance upgrade" and if the spacers are metal or plastic?

[michael88997]

no dampners come with that kit... you have to use the ones from the plastic

[clayboy]

add some grease on the blade root , easier to get a even tightness on the blades and tighten just enough so the blades not fall of its own weight when u tilt the heli

[vicrc]

I believe Gaui has replaced the plastic inserts to the metal ones. It was not an upgrade that I ordered it was just a replacement.

http://www.readyheli.com/204530_Head_Spacer_Damper_Set_Gaui_Hurricane_550_p/204530.htm

[BL]

I believe Gaui has replaced the plastic inserts to the metal ones. It was not an upgrade that I ordered it was just a replacement.

http://www.readyheli.com/204530_Head_Spacer_Damper_Set_Gaui_Hurricane_550_p/204530.htm

I received the dampers from Infinity a week ago but still plastic, not alu.
They are both having the same part no. 204530.
http://www.infinity-hobby.com/main/product_info.php?cPath=32_79&products_id=821

I believe the alu part should work better as I noticed my plastic part has a little bit out of shape. Not sure is due to metal grip + 550mm blade + Z30A, a bit too stress to the plastic part.....

[woz]

BL , If there is a "weak point" for me , it that yoke and dampers.The yoke, because it supports the spindle shaft through the dampers, BUT the yoke is held in place with 2 x3mm
machine screws in the plastic version. I also think the dampers have to "fill" a big space and feel that combined with the softer plastic inserts , will not handle a beating.
Having said all that , I have not had any problems with this set -up and no vibration issues.
so really just an observation AFTER damaging the plastic yoke and screws (twisted a good few degrees) and re assembly with the CNC yoke and standard dampers.

[Zoobie]

Fixed the vibration finally - I hope permanently - I balanced the tail blades, but nothing changed, so I did not check again. Then finally out of frustration I just put a different set on that I had lying around and the vibe was gone - so much for my balancing!!