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HomeAircraftHelicopterHelicopter Main Discussion › track problem
09-21-2013 07:15 PM  5 years agoPost 1
BENTDABOOM

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west seattle

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ok so we just converted a 30 rappy to a 50, everything looks but have tracked the blades 2 times and 2 times they wont stay in track
any suggestions? BTW their 600s weighed/balanced etc

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09-21-2013 07:17 PM  5 years agoPost 2
VANHELI

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Omaha,Nebraska

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So are you saying you can get them to track but then they come back out?

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09-21-2013 07:21 PM  5 years agoPost 3
BENTDABOOM

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west seattle

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yes sir>>>>> update, just checked both blades and their statically in track, seems like they chance in flight

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09-21-2013 07:28 PM  5 years agoPost 4
jackp332

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Claremont, Nh USA

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I experienced this recently and could not figure it out. It was my spindle that was bent ever so slightly. Take the blade grips off, pull it out and roll it across a flat surface to verify if it is bent or not. Also- be certain your thrust bearings are greased and assembled in the proper order. Also, pull the dampers, clean them, and lube them with dielectric grease.

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09-21-2013 07:31 PM  5 years agoPost 5
BENTDABOOM

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west seattle

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both main and spindle are new and were rolled on a granite surface, I also greased the dampers/holes, guess I could always change damper head

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09-21-2013 07:33 PM  5 years agoPost 6
VANHELI

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Omaha,Nebraska

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First thing I would do is pull the head completely apart and reassemble. Sometimes thrust bearings can trick you in to believing they are seated correctly but then under load they show they are not.

I have also had tracking issues that would come and go and it turned out the ball on the blade grip was a little loose and sometimes the linkage would unscrew it a little. This caused enough play to make the blade go out of track.

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09-21-2013 07:37 PM  5 years agoPost 7
jackp332

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Claremont, Nh USA

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Ok- be sure to verify thrust bearings are assembled in proper order. On the raptor, the ring with Larger inner diameter goes closest to head (you can tell because it slides onto spindle easily) then the ball race, then the ring that has Smaller inner diameter goes towards blade. (This one slides onto spindle with alot of resistance)

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09-21-2013 07:38 PM  5 years agoPost 8
jackp332

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Claremont, Nh USA

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+1 on what VANHELI said.

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09-21-2013 07:41 PM  5 years agoPost 9
BENTDABOOM

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west seattle

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well guess what Ill be doing today...thats what I like about these things its a non ending effort, keeps me off the streets

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09-21-2013 07:43 PM  5 years agoPost 10
jackp332

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Claremont, Nh USA

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Good luck man

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09-21-2013 08:33 PM  5 years agoPost 11
BENTDABOOM

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west seattle

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ok ya got the bigger ring that slides on 1st then the thrust bearing, does it matter what side the trust bearing lays on the big 1st ring? thiers 2 sides

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09-21-2013 08:39 PM  5 years agoPost 12
jackp332

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Claremont, Nh USA

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No the ball race is equal on both sides. (Even though it looks like sides are different) Be sure to grease.

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09-21-2013 08:57 PM  5 years agoPost 13
BENTDABOOM

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west seattle

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got it, also thiers 4 bearing pcs. large hole that goes on 1st then thrust bearing then another that goes on top of the thrust bearing then thiers a washer that goes on top of that, confirming that is correct?

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09-21-2013 09:20 PM  5 years agoPost 14
pH7

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Sterling Heights, MI - USA

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If you place the thrust bearing race so the open side is facing in toward center and closed side out, the grease in the thrust bearing will stay where it belongs for a longer time.

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09-21-2013 09:24 PM  5 years agoPost 15
Heli 770

rrProfessor

USA.

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I always keep the ball cage cup towards the hub to help retain the grease in it. Thrust washer between the thrust bearing and outside radial bearing.

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09-21-2013 09:31 PM  5 years agoPost 16
BENTDABOOM

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west seattle

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ok but need confirmation their are 4 pcs for the bearing install right?

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09-21-2013 09:37 PM  5 years agoPost 17
jackp332

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Claremont, Nh USA

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Yes that's correct- washer last, towards blade grip side.

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09-21-2013 09:57 PM  5 years agoPost 18
BENTDABOOM

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west seattle

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cut/dry perfect

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09-21-2013 09:57 PM  5 years agoPost 19
mr dan

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Stockton Calif

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allot of times its caused by worn dampers.

"R.I.P Roman" Citizen 0094 in the Nation

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09-21-2013 09:57 PM  5 years agoPost 20
turboomni

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East of the Equator

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Have the blade grips been through a crash? They can look fine but actually can be stretched slightly and cause problems with tracking.

Setup is everything, All my heli's can fly far better than I can pilot them

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