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HelicopterMain Discussion › Do you oil your bearings when assembling?
09-11-2007 10:20 PM  10 years agoPost 1
jackheli

rrProfessor

Vancouver - Canada

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Just wondering if this is a good practice: to oil your bearings with light machine oil while building. I just heard that the oil may actually strip the bearing from its grease, or worse, drive impurities inside the seals.

Knowledgeable answers are welcome!

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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09-11-2007 10:24 PM  10 years agoPost 2
cellexjohn

rrNovice

Lafayette, In - USA

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Greetings,

I packed mine with grease with the "The Greaser". I only have 3 gallons through it so no feedback yet. Seems like a good Idea to keep them packed. If you go to the manufacutre website they have some good info and recomend a specific grease and explaine why.

John

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09-12-2007 01:39 AM  10 years agoPost 3
Rick_H

rrKey Veteran

Boulder City, Nevada

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Oil No, Grease YES.

Like cellexjohn recommended get your self a greaser and your bearing will last a long time.

Rick

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09-12-2007 02:39 AM  10 years agoPost 4
oldboldpilot

rrKey Veteran

Southern California

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During a build, I put a light wipe of light oil on shafts and the inside and outside of bearings, so that the first time they meet each other, it is a pleasant experience for them, but the only bearings I lubricate (with lithium grease) internally are the thrust bearings and the auto-rotation hub.

By the time I fly, the light oil wipe is gone.

For storage, I apply the light oil wipe to all shafts and anything that can rust, and put the heli in a bag.

I re-do the grease every 25 flights.

My experience with oiling things was that this attracted dirt, and wear was accelerated. I have no bad experience not oiling. FWIW..

Helis are Man's Defiance of the Laws of Nature - OCHC

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09-12-2007 03:40 AM  10 years agoPost 5
r2helis

rrApprentice

Western Colorado

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Grease yes, oil no.

Pound for Pound, Heli's are a blast..... Roland

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09-12-2007 06:35 PM  10 years agoPost 6
spog

rrVeteran

Ontario, Canada

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Oil will extend the service life of some bearings. If you don't mind periodically regreasing the high speed bearings, then grease is fine.

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09-12-2007 09:09 PM  10 years agoPost 7
Busher

rrKey Veteran

Manchester, England

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The greaser has my vote, and use it from new to help your bearings last a bit longer

Good luck
Busher

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09-13-2007 02:12 AM  10 years agoPost 8
tlankford01

rrApprentice

Amarillo, TX 79110

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I oil everytime I fly and I completely clean my helicopter with compressed air every few days. I fly my helicopters over 300 days out of the year. If you constantly oil and clean grease is not an issue. If you have to tear down for maintenance or repair then I woud regrease. Otherwise oil is fine as a routine lubricant.

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09-13-2007 02:14 AM  10 years agoPost 9
tlankford01

rrApprentice

Amarillo, TX 79110

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Do NOT use superlubricants like prolong. This has chlorine for a fast lubricant that actually will corrode your parts.

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09-14-2007 03:05 AM  10 years agoPost 10
falcon447

rrApprentice

Overland Park KS​USA!

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Oil No, Grease YES.

Brian

Thanks to all the brave service people who serve our country!

Brian (ViperDraggs) Jones

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09-14-2007 04:26 PM  10 years agoPost 11
jester4

rrKey Veteran

Brampton, Ontario

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I grease my bearings on my nitro birds with my home-made "greaser". I don't do anything to my small electric heli's though.

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09-14-2007 06:34 PM  10 years agoPost 12
Futura57

rrApprentice

UK

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Jester4 - Can you give details of your home made greaser or show a picture please.

Hardware eventually fails - Software eventually works!

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09-15-2007 12:05 PM  10 years agoPost 13
jester4

rrKey Veteran

Brampton, Ontario

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I can take a pic tonight, but when I say "homemade", it's kinda of a stretch as I am a machinist, and I made it to use at home..

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09-15-2007 12:57 PM  10 years agoPost 14
bigdad390

rrVeteran

East. Liverpool,​Ohio

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I grease when assebling, then after a while I start to oil all bearings before each flying session. I will add a drop or two to each mainshaft bearing tilt the swashplate and let the oil run into the bearing, a drop to each blade grip, both main and tail rotor. the tail pitch slider, etc. I use 3 in 1 oil and after 20 years of flying, I have never had to replace a bearing except for one upper mainshaft bearing on a Hawk pro that I purchased used. the previouse user probably did not lube it. Once a year I dissasemble tail rotor gear boxes and tail rotor take off bearings and repack with grease.

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09-15-2007 03:10 PM  10 years agoPost 15
bekylane

rrNovice

FL, USA

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I always oil ball bearings on my helis when assembling.

I used to use tri-flow, now I switched to Liquid Wrench L4 which is more slippery and durable.

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