RunRyder RC Helicopter Topic - catastrophic failer

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Century Radikal - Hawk - 50NX - Predator > catastrophic failer

CompyMike
Senior Heliman
Location: sacramento, ca

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I know the counter shaft bearings are sealed so do they not need to be lubricated when you install them?

01-28-2009 Over year old.

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SteveH
rrProfessor
Location: Texas

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Quote
I know the counter shaft bearings are sealed so do they not need to be lubricated when you install them?

The bearings are shielded, not sealed.....big difference. They do come lubed, but need relubing, IMHO, at every teardown/inspection.

SteveH
Magnum Fuel
AMA76186

01-28-2009 Over year old.

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CompyMike
Senior Heliman
Location: sacramento, ca

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Thanks steve.
Do I soak them in tri-flow or spray them down with teflon spray?

01-28-2009 Over year old.

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SteveH
rrProfessor
Location: Texas

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Any lubricant will help, but I personally use bearing grease installed with the Greaser. It's a tool for greasing bearings.

I don't recommend Triflow on bearings. The little bits of Teflon will actually make the bearings feel rough.

SteveH
Magnum Fuel
AMA76186

01-28-2009 Over year old.

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Ray Fernandez
Elite Veteran
Location: Guam (U.S.A.)

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I agree with Steve. Use grease instead of the Triflow CLP.

Sorry Mike. Found the upper frames but both sides are damaged.

Ray Fernandez - GUAM

01-28-2009 Over year old.

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FBoss
Elite Veteran
Location: Aurora Indiana USA

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That greaser is the next tool on my list. I have a PILE of bearings that need some love!

The good ole times are now ,Hawk, Raven,NX50, Logo10,Swift

01-29-2009 Over year old.

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CompyMike
Senior Heliman
Location: sacramento, ca

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No worries i picked up some new frames. Thanks for checking. Going to have to reaearch this greaser. If these bearings are shield how would you lube them?

01-29-2009 Over year old.

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chris6414
Senior Heliman
Location: HMH-772 NAS JRB Willow Grove, Pa USA

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I must have the hardened shaft as mine was just polished a bit at the bearings and bearing were GTG. Frame was good and the top pinion wouldn't come off so I didn't mess with it. Measured up and down play when installed and it was less than 1 MM.

Century Hawk Sport, OS .32, 2S 3600 LiPo/BEC, Futaba 7C, G154 gyro, Scale, HK 450 w/Hughes 500 fuse

02-04-2009 Over year old.

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Blade_Master1
Elite Veteran
Location: Canada

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Aren't you glad you checked
Since the shaft was polished where the bearing sits you now know that they weren't locked to the shaft. 1MM I guess is acceptable as long as the piniion isn't rubbing inside the crown gear and the intermediate gear isn't rubbing on the bottom of the frame.

I would bet that the set screw on your pinion has been loctite
easiest to remove the set screw is to remove the intermediate shaft from the heli and heat the set screw up using a propane torch.

I no longer use loctite in set screws for this reason, IMO it is a bit of overkill as they never come loose on my heli's. I just tighten them good and check them during the preflight.

02-04-2009 Over year old.

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FBoss
Elite Veteran
Location: Aurora Indiana USA

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I replace those set screws every time I remove them. The small one just strip too easy.

The good ole times are now ,Hawk, Raven,NX50, Logo10,Swift

02-04-2009 Over year old.

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Century Radikal - Hawk - 50NX - Predator > catastrophic failer

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