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Home✈️Aircraft🚁Helicoptere-MikadoLogo 550 › pitch slider arm problems
04-28-2014 03:35 AM  6 years ago
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tworst

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Morgantown, WV USA

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pitch slider arm problems
I am having problems with the tail slider pitch arm. All it has is 2 bearings with a sleeve in the middle and a flat washer between it and the silver triangular arm mount. Everything is good until I tighten up the bolt. Then I get major drag on the movement, completely unuseable. Both bearings are just a bit proud of the wells in the arms and I think this is correct positioning. The inside bearing should make contact with the flat washer to keep the arm well top ridge off of the mount and the inner sleeve should just rotate with the bearings. I just can't get it to not bind.
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04-29-2014 06:34 AM  6 years ago
Paul Woodcock

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Dubai - United Arab Emirates

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Hi

I had the same problem on my 550.

I tried all sorts of tricks, but eventually, I tried a different 3mm bolt and it was perfect. Possibly the head on the bolt is slightly skew and causing a bind on one of the bearing.

Let us know how it goes.

Regards
Paul
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04-29-2014 08:51 PM  6 years ago
smittylube

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Santa Cruz, CA

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maybe a washer both endsRPM is your friend..................................until you crash
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04-30-2014 01:55 AM  6 years ago
BobOD

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New York- USA

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See if you can tell if the sleeve between the bearings is snug against the inner bearing races. It'll jiggle around in there if not. If it's not against the bearing races, tightening the bolt will shift the inner races and bind the bearings. Could be excess flashing in the bearing wells. You could try just squeezing them in a bit to make sure they are seated. There shouldn't be any glue used in these bearing wells either.Team POP Secret
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04-30-2014 11:28 PM  6 years ago
tworst

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Morgantown, WV USA

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Well, I just added a second washer and binding is now gone. Not sure why this worked, but I will take it.
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05-01-2014 12:16 AM  6 years ago
BobOD

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New York- USA

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Where did you put the second washer, under the bolt head or between lever and mount?Team POP Secret
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05-02-2014 10:07 PM  6 years ago
tworst

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Morgantown, WV USA

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Between lever arm and mount.
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