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HelicopterEngines Plugs Mufflers Fuel › How many gallons do you have through your OS 50​without bearing problems?
10-06-2005 05:55 AM  12 years agoPost 1
Louisiana Helicam

rrKey Veteran

West Monroe, LA

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I just need to know. I'm about to order ceramics to have just in case.

www.louisianahelicam.com

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10-06-2005 06:02 AM  12 years agoPost 2
spritefiend

rrKey Veteran

Camarillo, CA

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i had some going bad after about 10 gallons.

changed them to rc-bearings ceramics and have around 12 gallons through it. had to pull the engine from my sceadu to tighten the fan hub that came loose, figured id pull the backplate as well. looked pretty damn perfect considering what the old ones looked like when they came out with less time on them.

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10-06-2005 01:10 PM  12 years agoPost 3
Louisiana Helicam

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West Monroe, LA

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Did you do the crank mod?

www.louisianahelicam.com

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10-06-2005 02:30 PM  12 years agoPost 4
playfair

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Rochester, NY

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I've had as many as 18 gallons go through fine, then to bake my noodle only got 2 on the next set! No crank mod.


The sky is our canvas

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10-06-2005 02:32 PM  12 years agoPost 5
clearsky

rrApprentice

connecticut

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Rear bearing approx: 5 Gal

Keep'um in sight

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10-06-2005 02:41 PM  12 years agoPost 6
Jafa

rrElite Veteran

Sydney, Australia

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10 litres so far and they are like new
Steel bearings and standard crank

We have on guy here that runs a 2200 rpm head speed on a Raptor 50 and wears out the OS50 Hyper main bearing in about 60 hard 3D flights - about 30 litres of fuel


Protos | Logo 400 & 500 | Sceadu Evo | Freya Evo | Trex600N | Avant FX

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10-06-2005 04:53 PM  12 years agoPost 7
Snapy

rrNovice

Fort Walton Beach​Florida

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Hummmm

well i dont know what the prob is with your Hyper 50.
ive got around 7 gal's of cool power 30%. and 2 hard mistakes with the ground and mine is still in great shap.
did i just get lucky?
will the funn end soon?
should i do the crank mod?

Don

Build / Fly / Crash / Cry / Rebuild

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10-06-2005 06:19 PM  12 years agoPost 8
MicroDOC

rrVeteran

Goleta, CA

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I just received my OS-50 Hyper back from being rebuilt, or should I say replaced. The note attached said that they could find no problem other than a small amount of rust on the main bearing and a scuffed cylnder. This engine has never been run real lean and was on the 5th. gallon of CP 15%. Actually 4 gals of Byron and 1 gal of CP. They recommend using afterrun oil after every day of flying. CP says not to use afterrun oil. What is guy to do? This engine was relative new.
I have heard that this has been an ongoing problem with the OS Hyper engine, but they say they won't repair it again under the warranty. What does a two year warranty mean? Is that their answer to addressing a known bearing problem??

Experience is something you don't get until just after you need it!

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10-06-2005 08:10 PM  12 years agoPost 9
jackheli

rrProfessor

Vancouver - Canada

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I have about 4 gallons on my Hyper. No signs of bearings going bad yet (haven't open it up to see, but the sound of the engine is clean). I use CP 15% on all my engines.

After every flying session I run 1 oz of FAI (no-nitro) fuel with extra 10% castor oil added to it.

The engine runs very rich during the minute or so it takes to go over the fuel, so I simply open the pressure line from the muffler.

I've been doing this since forever, and never had to replace bearings on any of my engines (touch wood). I have a 4-year-old OS 46 that is top-notch! It has more than 200 flights on its back...

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

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10-06-2005 08:21 PM  12 years agoPost 10
Renegade2473

rrApprentice

UK Newcastle Upon​Tyne

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Caster based fuels

JackHeli: I think caster based fuels, leaves the remains of caster in the crankcase and bearings. This and the fact the a tarnish forms on everything probebly accounts for your engines long life. Protection from corrosion.

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10-06-2005 09:04 PM  12 years agoPost 11
spritefiend

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Camarillo, CA

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Did you do the crank mod?
i dont think i mentioned it, i did this though.

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10-06-2005 09:36 PM  12 years agoPost 12
jackheli

rrProfessor

Vancouver - Canada

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Yep. The hardened castor oil leftover goop is what isolates the bearings from the humidity in the methanol and nitromethane...

Also, all nitro is flushed out of the system by burning FAI fuel. Although plain methanol also rusts bearings, the main culprit is removed from the system.

I am not sure if you can use castor oil on pumped engines, though. Not sure if it does not harden the rubber membranes inside the pump...

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

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10-06-2005 09:37 PM  12 years agoPost 13
pcliftonjr

rrKey Veteran

Phoenix, AZ

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About 18 gallons of Cool Power 30%. I replaced both with "www.rc-bearing.com" steel bearing. No crank mod...

Paul

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10-07-2005 02:51 AM  12 years agoPost 14
George Matthews

rrElite Veteran

N.W. Ohio

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I have over 20 gallons through my OS 50 hyper with no bearing problems and no crank mod.
I run Wildcat CY and I don't burn the excess fuel off after flying.
Only time i use any after run oil is during winter storage.

George Matthews

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10-07-2005 03:35 PM  12 years agoPost 15
wouter

rrApprentice

Belgium

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I just need to know. I'm about to order ceramics to have just in case.
just order a set.
the bearings will go! it's just a matter of time.

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10-07-2005 05:30 PM  12 years agoPost 16
shaltac

rrApprentice

Rochester, NY

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3 gallons of WC/CY30% I burn off the extra fuel most of the time, just dropped my backplate and everything is shiny and clean.

I'm wrong no matter what I do, so I might as well have fun doing it!

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10-07-2005 11:15 PM  12 years agoPost 17
MicroDOC

rrVeteran

Goleta, CA

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I was talking to several plank guys last night and they say they use Marvel Mystery Oil for after run and that it's stops the rust problems! Any comments?

Experience is something you don't get until just after you need it!

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10-07-2005 11:28 PM  12 years agoPost 18
shaltac

rrApprentice

Rochester, NY

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I've been using ATF in my car engines for after-run for years. We run them up to about 280deg. and have relatively little oil in the fuel we use. I've yet to have one rust up or sieze...

I'm wrong no matter what I do, so I might as well have fun doing it!

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10-07-2005 11:42 PM  12 years agoPost 19
BigChopper

rrKey Veteran

Cambridge, UK

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- I have been using my OS50SXH for 2years now with not a single problem...
- I never run the tank dry at the end of flying.
- I never use after run oil.
- I use the original carb and have not done the cateye mod, or any mod.

so,
- I dont know what the fuss is all about!

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10-08-2005 12:11 AM  12 years agoPost 20
DS 8717

rrProfessor

Here wishing i was​somewhere else

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I have been using mine for 5 years and i use afterrun oil. It has a ceramic rear bearing in it that has been through 2 engines and is still going.

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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HelicopterEngines Plugs Mufflers Fuel › How many gallons do you have through your OS 50​without bearing problems?
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