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Engines Plugs Mufflers Fuel > Running Temperature of OS 50 Hyper
 
 
Allen Key
Heliman
Location: U.K. England

My Posts This: Topic  Forum		Any idea of the running temp of the OS 50. Im thnking of packing the rear bearing with high temperature grease.

Regards

Dave
07-04-2009 11:02 AM
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Blademan
Senior Heliman
Location: Morehead, KY. Home of the CRAM club

My Posts This: Topic  Forum		About 195 t0 210 F

Cave Run AeroModelers AMA # 838863
07-04-2009 12:34 PM
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T-Rex-Flyer
Key Veteran
Location: Panama City, Fl

My Posts This: Topic  Forum		I'm no expert, but that sounds like a quick way to destroy a good motor. The grease will be thrown out of the bearing in short order, and it has to go somewhere.

If the wings are traveling faster than the fuselage, it's probably a helicopter.
07-04-2009 12:36 PM
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Blademan
Senior Heliman
Location: Morehead, KY. Home of the CRAM club

My Posts This: Topic  Forum		I agree

Cave Run AeroModelers AMA # 838863
07-04-2009 12:37 PM
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TDriver
Veteran
Location: Portage IN

My Posts This: Topic  Forum
Quote 
About 195 t0 210 F

Is that on the Head side of the case the back plate or what ?
07-04-2009 01:42 PM
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Helinutnz
Elite Veteran
Location: below 42 South

My Posts This: Topic  Forum		head.
Take the air coming out of the bottom of the head and not from the fins on the top of the head or down the glow plug hole.

The air coming out the bottom at about 200F close to the fins will be close to perfect. Land after a fang and get in there quick and stop the head and take the reading immediately.
07-04-2009 01:50 PM
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f penfold
Key Veteran
Location: uk

My Posts This: Topic  Forum		the grease with be flushed out by the fuel and could lead to other damage the amount of oil in fuel is more than enough to lube the hole engine.

I know I used lock tight why did my head explode
07-04-2009 07:29 PM
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Git
Veteran
Location: Brunei

My Posts This: Topic  Forum		they say never go beyond 250 deg f becos that's the limit for the plastic on the bearings..

+1 grease are useless though, they will be washed away.

Born to fly, forced to work
07-04-2009 08:09 PM
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helidoc2
Senior Heliman
Location: so.cal

My Posts This: Topic  Forum		I installed a VXB Bearing and it had High temp grease already packed in the bearing when i took the dust cover off to install in my hyper 50, I didnt have a problem at all...
Whats funny it lasted longer than any other bearing...lol
07-04-2009 08:14 PM
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Allen Key
Heliman
Location: U.K. England

My Posts This: Topic  Forum		Rear Bearing

If the bearing is packed with high temp grease and the cover is fitted surely the grease would stay in the bearing.
The grease is good for 180 degrees C

Regards

Dave
07-05-2009 12:56 AM
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Yug
rrMaster
Location: UK. Herts

My Posts This: Topic  Forum		Any packed grease will be expelled within seconds except for sealed bearings but they are inapropriate for use.
The hyper is happiest at 94'C or 200F

Vegetable rights and Peace
07-05-2009 01:54 AM
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Allen Key
Heliman
Location: U.K. England

My Posts This: Topic  Forum		Sealed Bearing

Why are sealed bearings no good

Regards

Dave
07-05-2009 02:28 AM
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Yug
rrMaster
Location: UK. Herts

My Posts This: Topic  Forum		I think resistance to motion and the inability for the natural fuel flow to provide a replenshible lubrication source

Vegetable rights and Peace
07-05-2009 02:33 AM
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Busher
Key Veteran
Location: Manchester, England

My Posts This: Topic  Forum		As said above the grease would be washed away in a few seconds of usage. Even a sealed bearing would probably lose its grease in a matter of minutes in that environment.
The bearings in the motor are designed to be open and the fuel has sufficient oil in it to lubricate the bearing.

Good luck
Busher
07-05-2009 09:27 AM
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Allen Key
Heliman
Location: U.K. England

My Posts This: Topic  Forum		Thanks for all the info

Regards

Dave
07-05-2009 01:41 PM
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Sparky2
New Heliman
Location: Herts, UK

My Posts This: Topic  Forum		Would this change with the amount of Nitro or just the % of oil in the fuel.
Cheers Chris
07-05-2009 04:18 PM
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Busher
Key Veteran
Location: Manchester, England

My Posts This: Topic  Forum
Quote 
Would this change with the amount of Nitro or just the % of oil in the fuel.
Cheers Chris

The amount of nitro in fuel hasn't got much of a bearing on the amount of lube in the fuel.

Good luck
Busher
07-05-2009 06:47 PM
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Markerbeacon
Key Veteran
Location: N.E. Iowa

My Posts This: Topic  Forum
Quote 
The amount of nitro in fuel hasn't got much of a bearing on the amount of lube in the fuel.

Perhaps not in every case, but in some cases there is a noticable difference. I run Coolpower 30% (non-LS). It's oil content is 22%. Coolpower 15% (Standard Heli) on the other hand has a 17% oil content. The 15% Coolpower has approximatley 23% less oil than the 30% Coolpower. (If my math is correct)
07-05-2009 07:14 PM
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Tolla
Senior Heliman
Location: Cape Town, South Africa

My Posts This: Topic  Forum		I'm still running my datalogger an logging cylinder head temperarture during flight. With an ambient temperature of 18 Deg centigrade my head fluctuates between 90-115 deg centigrade during flight, depending on how hard the motor is working. If I could figure out how, I'd post the acual graph of some flights.
07-06-2009 07:26 PM
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f penfold
Key Veteran
Location: uk

My Posts This: Topic  Forum		up lod it as an image

I know I used lock tight why did my head explode
07-06-2009 08:17 PM
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Engines Plugs Mufflers Fuel > Running Temperature of OS 50 Hyper
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