trex 600 fbl has bad tail vibrations ? - HeliFreak
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Old 05-23-2017, 09:39 AM   #1 (permalink)
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Default trex 600 fbl has bad tail vibrations ?

So I've not been flying much due to work,weather, other hobbies..but I take my trex 600 I converted yr before last to fbl to the field with me when I go to cut the grass ever 2 weeks or so, well it flew fine first couple times out this yr but the 3rd trip out I couldn't go into stunt mode 2 w.o having some horrible tail vibrations I say tail cause you can see the tail fun just moving very fast and I hear vibrations..I have checked for play in all bearings on tail head,main shaft and everything feels good to me. could the belt make it do this?? it's the stock belt as far as I know. I have sprayed tried flow on it in the past to get rid of a sweeping sound. I don't hear that sound now just the bad vibrations

my throttle curves are v curve to 100 max in stunt mode 2 but stunt mode one is only to flat 80% and doesn't vibrate. but it also doesn't have the power I like to have. I know this is a older heli and have bout decided to just buy a new heli, frame and put all my electronics into it.
it's got a castle hv 120 amp esc align servos cyclic futaba tail servo stock 600 motor.i fly it on 4000mah 6s batterys

Thanks

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Old 05-24-2017, 08:36 AM   #2 (permalink)
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Guess this place is dead, everyone flying even bigger helis or quads now...

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Old 05-24-2017, 10:09 AM   #3 (permalink)
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Check the vibration isolation foam mount of the gyro or FBL unit, maybe securing it tighter with a zip tie may help. All that providing the belt and drives/bearings are good.
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Old 05-24-2017, 07:00 PM   #4 (permalink)
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Quote:
Originally Posted by pril250 View Post
Check the vibration isolation foam mount of the gyro or FBL unit, maybe securing it tighter with a zip tie may help. All that providing the belt and drives/bearings are good.
The heli flys fine just that tail vibration isn't any fun.

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Old 05-26-2017, 10:11 PM   #5 (permalink)
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Yank the main blades and rail blades off. Spool to your idle up rpm and feel around for the vibration. It could be the tail blades, torque tube, the tail shaft.

Check around for a bad bearing as well.
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Old 08-01-2017, 03:50 PM   #6 (permalink)
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Quote:
Originally Posted by Boinker View Post
Yank the main blades and rail blades off. Spool to your idle up rpm and feel around for the vibration. It could be the tail blades, torque tube, the tail shaft.

Check around for a bad bearing as well.
Took off both sets of blades and spool up i still feel and see the vibrations..
Im thinking maybe just replacing the tail shaft bearings and seeing if that helps anything. I did buy the heli used last yr and never changed out the bearings only the one way when it locked up on me
trex 600 fbl vibrations (0 min 13 sec)
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Old 08-10-2017, 06:11 PM   #7 (permalink)
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Did you check that the belt was tight enough?
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Old 08-10-2017, 08:07 PM   #8 (permalink)
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Did you check that the belt was tight enough?
Yes, I ment to update. After replacing the tail shaft bearings and spacing the main and auto gear apart it seems the vibration is a lot better now i only hovered int he yard for a minute have to go to field and fly one day if it ever stops raining
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Old 08-14-2017, 06:09 AM   #9 (permalink)
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I was thinking it may be a FBL controller issue.
Ive pulled the blades, spooled it ip and watched and felt the servos and linkages for oscillations.
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Old 09-16-2017, 12:41 AM   #10 (permalink)
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Thanks everyone she is still flying great now after replacing those tail shaft bearings. next will be the main shaft bearings.
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