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Logo 550 › One way bearing gone
03-09-2017 03:46 PM  6 months agoPost 1
Richardmid1

rrProfessor

Leeds, England

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I had a little crash with my 550sx and the one way bearing now just slips despite a new main shaft a cleaning it out with penetrating oil (GT85). Is this common? Thought these Logo's were good quality/reliable?!

60% of the time, it works every time!

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03-09-2017 06:14 PM  6 months agoPost 2
EEngineer

rrProfessor

TX

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Did realize that they were expected to be crash-resistant...

Check it's roller bearings and the "cage" they fit in. I've managed to snafu one by just installing the main-shaft.

FWIW

Logo 600SXs, 700XX, 800XX

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03-09-2017 08:49 PM  6 months agoPost 3
linemen120

rrNovice

galloway, nj usa

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theres a new owb coming out for the 600sx from Mikado..it will prob go right in the 550.

synergy E5s logo 600sx 480xx goblin 500/420/380 gaui X5 X4ll X3 trex 550/500 protos p380

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03-09-2017 09:14 PM  6 months agoPost 4
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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They are good quality and reliable...that does not account for pounding them into the ground...kinda like buying a Ferrari and getting into a car crash and asking the same question...

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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03-10-2017 09:55 AM  6 months agoPost 5
Richardmid1

rrProfessor

Leeds, England

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Pounded lots of helis into the ground, this is a first!

I think the problem stems from the fine pitch gears requiring ZERO gear play (already stripped a main gear in flight because I didn't read the small print about this). This means you are never quite sure if you have it too tight. If it's tight it'll wearing out the one way bearing quicker. However the one way was engaging just fine before the crash. Anyway, just one of those things I guess (like the swash bending! ).

60% of the time, it works every time!

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03-10-2017 06:44 PM  6 months agoPost 6
EEngineer

rrProfessor

TX

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zero gear play?

Gear mesh or axial play?

Logo 600SXs, 700XX, 800XX

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03-11-2017 01:10 AM  6 months agoPost 7
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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The instructions are clear, seronlash at the high spot, you won't strip gears or damage one ways. Even if your mesh is too tight, you will melt the main gear well before you damage a one way bearing.
You cannot setup every helicopter the same, especially when the instructions tell you not to donotbthe traditional way..it is not a traditional design...

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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03-11-2017 01:56 AM  6 months agoPost 8
EEngineer

rrProfessor

TX

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"seronlash at the high spot"

The way he explained it confused me...

Zero lash on the high-spot...of course.

I always do that...as it's clearly explained in the manual.

Logo 600SXs, 700XX, 800XX

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Logo 550 › One way bearing gone
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