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HomeAircraftHelicopterThunder TigerRAPTOR 50 › Old Raptor...New vibration
10-11-2011 11:40 PM  7 years agoPost 1
Jim Cimino

rrKey Veteran

NE Pennsylvania

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I try to fly my Raptor 50 V2 at least once a year, I usually fly one of my other heli's. I took it out the other day and noticed that it now has a vibration while hovering. I decided to pull the main shaft and check it and it seems to be ok. I noticed that the ball in the swashplate is loose, but I don't think that is the problem. I noticed some play in the main shaft bearings and it looks like the upper bearing might be loose in the frams. Is that an issue on older raptors? This one shows about fifty hours off flight time on my current radio and I think I also flew it on another radio years ago. The engine runs smooth, the blades are balanced and the spindle is straight. Ideas?
Thanks.
Jim

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10-12-2011 12:23 PM  7 years agoPost 2
Neon Juripuri

rrVeteran

Peculiar Mo USA

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If you only fly it once a year,and it didn't do it the last time you put it away. I would suspect a warped blade. You say you fly other helis. If possible I would swap blades and see what happens.
Main shaft bearings do go bad. But you mostly feel a rough grinding noise. Some say it causes glitches on 72 mhz radios. If they are loose in the frames, something is wrong. But I doubt it is causing a vibration.
Fred

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10-20-2011 05:10 AM  7 years agoPost 3
Bohnhead

rrApprentice

Watertown,SD. USA

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Heli Vibration
I would try greasing the dampners and regreasing the bearing in the head. Alot of raptors will vibrate if the dampners get dry, which is common if it has been sitting for a year. Hope this helps.

Quick Charge,Fuel, and let's go Flying!!!

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