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Home✈️Aircraft🚁Helicoptere-MikadoOther › Thrust bearing failure
09-17-2009 10:20 PM  11 years ago
helicraze

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Victoria - Australia

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I like the black low profile, stronger and looks nice. I bought a few sets
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05-02-2010 01:15 PM  10 years ago
Flexis

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Westerlo-Belgium

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A bit of a late reply but discovered the exact same thing on my Logo 500 V-bar yesterday. They wheren't as bad as yours yet but I felt the cyclic and pitch where responding weird in the last few flights. I thought it where the dampeners so when I replaced them I discovered the same thing. Headspeed is about 2300rpm, flying pretty hard 3D.RJX X-treme 50EP 12s
Hovering is for planks
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05-02-2010 07:07 PM  10 years ago
Roby

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Slovenija, Europe

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Hi.
Open part of ballcage must face out to the blades not to the center of the head! If open part faces to the center of the head the balls are not suported right in the middle and evetualy will balls destroy cage and will brake smothe run of the balls.
I made thise mestake with my first helicpoter, since I turnd cage right I didn`t have problems again!

Best regards.
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05-02-2010 07:10 PM  10 years ago
eggmcmuffinplz

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Los Angeles, CA

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No, the open part faces the hub to "catch" the grease. Plus its usually the side that exposes the steel balls more than the closed side. So when the grips are being pulled, its the balls that contact the race, not the actual cage.
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05-02-2010 07:58 PM  10 years ago
LaurenceGough

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UK

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Yep, open side of the cage goes towards the hub to keep the grease you packed in well - in.

To be frank, doing it any other way is wrong in my view...
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05-02-2010 10:05 PM  10 years ago
Roby

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Slovenija, Europe

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If the open site of the cage face to the hub, cage is forced to the out site part of the bearig. There is just meter of time whan balls destroy cage.
Grease at that ratio have nomore chance to stay in no mater where is cage facing!
On thise manual is clear where must be facing:


Look bearing in the first post again and ask your self whay that hapend! Than read my post again.
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05-02-2010 10:23 PM  10 years ago
LaurenceGough

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UK

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Yeah that manual is showing the open side towards the hub.

It's the proper way of doing it, many manuals say to do this and grease will get kicked out a lot faster if you don't.
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05-02-2010 10:49 PM  10 years ago
Roby

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Slovenija, Europe

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Small diameter of the cage is open site and it is facing out!
Where did you read that it must be facing to the hub?

Here is one more manual picture:
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05-02-2010 11:46 PM  10 years ago
nyc863

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australia

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I've always wondered what the proper answer is to this.

Finless bob build videos say the ball race cage should face to "trap" the grease due to it being flung outward, but what Roby says some sense: the balls are trapped in the ball race sandwich however the cage acts to keep them equidistant, it does seems better that it is on the inner side of steel balls, pressing down on the top of each, rather than clinging on just with the edge.

Are solid cage thrust races ever used?
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Home✈️Aircraft🚁Helicoptere-MikadoOther › Thrust bearing failure
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