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Mikado . Futaba-RC . HeliProz
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Grease

rcheliguymtl

Senior Heliman

Montreal, Quebec - Canada

Can I use lithium grease for where it says thrust bearing grease?

02-08-2013 Over year old.
JKos

rrProfessor

Redondo Beach, CA

That's what I use.

- John

02-08-2013 Over year old.
rcheliguymtl

Senior Heliman

Montreal, Quebec - Canada

I don't have the white one, just lithium grease, its kind of brownish color.

02-08-2013 Over year old.
Stephen Born

Elite Veteran

Vereinigten Staaten

White Lithium grease dries, becomes flaky, rendering its lubricating properties.

Team HeliProz
PerformancePlusRC

02-08-2013 Over year old.
JKos

rrProfessor

Redondo Beach, CA

Maybe I'm remembering wrong. The lithium grease I have is slightly tan in color and has been fine for many years. Ten years to be exact. Got it when I started flying helis.

(For those just reading this, I had orginially said I use white lithium grease in my first post.)

- John

02-08-2013 Over year old.
Stephen Born

Elite Veteran

Vereinigten Staaten

Use the grease on thrust bearings. Do not use grease on the one-way. Tri-Flow oil on all other bearings.

I use "Red Devil" on thrust bearings.

Team HeliProz
PerformancePlusRC

02-08-2013 Over year old.
BladeStrikes

Elite Veteran

Shelby TWP,Mi

Yup,white Lithium grease will get hard/chalky like AerialSkyCam said...
I use synthetic ATF on my one-way bearing and automotive (red) bearing grease on all my bearings...

02-08-2013 Over year old.
rpat

Elite Veteran

Weirton, W. Va.

Ok I am about to open a can of worms here. You shoulden't use grease on your main bearings. It is too viscous and actually adds some heat to the main bearings making your engine work just a little harder to turn the blades. I use tri-flow on my main bearings. Now places like your blade grips where there is not a lot of RPM's you are ok with the grease.

trex 700fbl cal30,minititan,lepton, trx600fbl,mcpx,trex250,logo 500,Velocity N2

02-08-2013 Over year old.
BladeStrikes

Elite Veteran

Shelby TWP,Mi

Its just your opinion on what you think...Been useing grease for 15+ years on all my RC bearings without issues and nothing works harder..

02-08-2013 Over year old.
JKos

rrProfessor

Redondo Beach, CA

BS,
> Its just your opinion on what you think...

How is it just his opinion? It is a simple fact that using thick grease in high speed bearings causes more drag than grease or lubricant with more appropriate properties.

Do you pack your motor bearings with the same grease you use in your blade grip thrust bearings?

- John

02-08-2013 Over year old.
Heli 770

rrProfessor

Lemon Grove, Ca. USA.

Grease slows bearing speed about 40% compared to oil. The worst thing is is filling a bearing over 25-30% with grease.

02-08-2013 Over year old.
JKos

rrProfessor

Redondo Beach, CA

Exactly!

As suggested in another thread, we should seperate the various things we grease and oil.

Motor bearings...
Lower speed bearings (main bearings, for example)...
Blade and tail grip thrust bearings...
Main shaft thrust bearings...
Tail shaft slider...
Swashplate...

Etc.

- John

02-08-2013 Over year old.
BladeStrikes

Elite Veteran

Shelby TWP,Mi

I'll use what ive been useing for years without any issues and you do the same..

For the record,
I don't pack the heck out of the bearings,just enough to coat them.If it slowed the bearing 40%,I would for sure know it...

02-08-2013 Over year old.
Stephen Born

Elite Veteran

Vereinigten Staaten

In any case, whichever substance you decide to utilize, make sure all bearings are lubed.

More importantly, I would like to reiterate that no grease should be used on the "one-way bearing".

Team HeliProz
PerformancePlusRC

02-09-2013 Over year old.
BobOD

Elite Veteran

New York- USA

Either works. I usually use greased bearings to start and replenish with oil.
Here are the ratings for the bearings. Grease lowers the RPM rating of the bearing but as you can see, very few bearings on a heli would exceed them.

For example, a Trex 600 main bearing (10 x 19 x 5) is rated
Greased 37000 RPM
Oiled 43000 RPM

And, as noted, it is important not to over pack the bearing.

Team POP Secret

02-09-2013 Over year old.
GREYEAGLE

Elite Veteran

Flat Land's

I grease - to keep the dirt out - I also run seal's

Heck I even drill hole's, and make circuits to get grease in and the old spooge out Few place's are drilled and tapped for 2mm socket set screw's

Pure Syn, very low viscosity with a high E.P. rating.
NO --Lith - which by the way uses clay for a carrier

I even port my one way's and the carrier hub, In from the top /old out from the bottom and one even has a drip line to keep the tail servo dry.

In a few place's I may use dry moly disulfide or even Dixon 64

Usually the 1st and last thing I do

I'm weird I like Happy Bearing's

greyeagle

02-09-2013 Over year old.
YSRRider

Elite Veteran

Northern, IL

Oil leaks out of the bearings fast and leaves them pretty much dry. It can also get gummy like motor bearings that are not properly oiled for storage. The more it seeps out, the more dirt it attracts.

I use The Greaser http://www.heliproz.com/prodinfo.asp?number=169165 I have used Tri Flow silicone, Bel-Ray waterproof grease (marine grease) but a much higher quality. And high temp red grease often used for car/truck brakes. I pack them with The Greaser, push old black grease out and other dirt and replaces it with fresh. Wipe them well before installing them. On any of the high speed bearings like the main shaft bearings, the excess grease is purged out on its own and once that happens, there is little resistance inside the bearing. Not enough to make any difference. a 5hp motor with a 6' rotor acting as a flywheel on a 1" diameter bearing isnt going to feel any difference from grease to oil.

Some of the theory's that are spit out on certain topics are complete garbage. Some entertaining but its annoying to head/hear it because you know there is some idiot out there that will believe it and then pass it on to someone else.

The main thing that I didnt read in this topic at all was maintenance. Does anyone else pull their bearings out periodically and relube them or am I the only dumbass that wastes the time to do that?

Everyone else just lubes them once and doesnt worry about it because they will either trash the machine or sell it in a year?

02-09-2013 Over year old.
GetToDaChopper

Elite Veteran

Las Vegas , NV

lithium, hey can i just use some of the lithium from one of my old puffed Lipo packs i have laying around all over the place ???

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02-09-2013 Over year old.
HOMEPAGE  
YSRRider

Elite Veteran

Northern, IL

For example, a Trex 600 main bearing (10 x 19 x 5) is rated
Greased 37000 RPM
Oiled 43000 RPM
Is this for the main shaft bearings? The bearings that dont ever exceed 3000RPM? If you run your head speed at 37000RPM+ you have bigger issues than what lube you are using.

02-09-2013 Over year old.
GREYEAGLE

Elite Veteran

Flat Land's

I'm the like in kind - I just found way's around pulling them down - OLD SCHOOL -

greyeagle

02-09-2013 Over year old.
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