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HomeAircraftHelicopterThunder TigerOther › R-60 vibrations
07-19-2002 01:09 PM  16 years agoPost 1
Gbouten

rrApprentice

Alamogordo, New Mexico

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This may be a subject that has been beat to death. I have a vibration in my Rap 60 that I can get rid of. it seems to be in the tail. In hover you can see the skids wobbling. When it is spooling down on the ground you can see it shake in the tail. I have replaced tail gears, drive shaft, tail shaft, everything I can think of, and all blades are balanced.

Greg

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07-19-2002 01:23 PM  16 years agoPost 2
Kurt64

rrVeteran

Salladasburg, PA

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Did you check the new tail drive shaft to make sure that it is straight? I have heard that a few have been shipped that are slightly bent already.

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07-19-2002 01:30 PM  16 years agoPost 3
Gbouten

rrApprentice

Alamogordo, New Mexico

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You know, I didnt guess I should. If you spin the main rotor while it sets on the ground you can see the vibration and it is like every few turns of the main blade. Seems like this machine has always had this.

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07-19-2002 01:38 PM  16 years agoPost 4
Kurt64

rrVeteran

Salladasburg, PA

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Mine used to vibrate on spool up....I guess the 60 is known for that from what I have heard. Once it is up to speed, the vibrations always stopped. Is is possible that the gear mesh in the tail drive is too tight?

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07-19-2002 03:43 PM  16 years agoPost 5
Gbouten

rrApprentice

Alamogordo, New Mexico

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Kurt

I never understood how to check the mesh on thoes gears. Seems like I got some shims for it, but all it said was if it's too loose or to tight ya de ya de ya da... I got thoes parts from you the other day, by the way. Very nice thanks..

Greg

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07-20-2002 01:42 AM  16 years agoPost 6
Justin P.

rrNovice

Mobile, AL,USA

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I don't know if this would help, but check the torque tube that goes in the tailboom to see if it is bent....???


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07-20-2002 04:46 AM  16 years agoPost 7
Kurt64

rrVeteran

Salladasburg, PA

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Thanks Greg....tell your friends.
I played with mine a little bit....it seemed to be happiest when it it was meshing always, but just about .001" clearance (if I had to guess). Anything tighter and it want to vibrate. Anything looser, and it made a wierd noise. I would have to vote for a bent tail drive shaft....even the new ones can be bent slightly and it doesnt take much to mess things up a bit.

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