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Century Hawk - 50NX - Raven - Predator > after run oil??
 
 
jim 73strat
Heliman
Location: Perth Western Australia

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Whats the go with after run oil, what is the best way to put it in and should you put it in every time you fly even if you fly every day?

WA
09-18-2009 02:17 AM
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

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i personally use ATF (automatic transmission fluid). but only during winter storage. if your out flying on a regular basis then you dont need to bother with it.

Shawn
Team Leisure-Tech
Team HelixRC
09-18-2009 02:44 AM
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imnxtc
Veteran
Location: Dawson

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I agree with FP - the after run oil you get at your LHS is basically the same oil as ATF.

The best way to insure longevity of your motor bearings and fuel lines, if you use muffler pressure, if to scavenge the engine after each day of use to get rid of any nitro residue in the engine.

Feeding it with an FAI fuel (metenol and oil only - no nitro) and cranking it over with your starter for a count of 10 is a very easy method of doing so.

All you need to do is to carry a sealed 2 oz. airplane fuel tank of it, with you, in your field box.
09-18-2009 05:05 PM
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Skybolt
Heliman
Location: Ontario, Canada

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When I know that I will not be flying for two weeks or more I remove the back plate and drop oil on the bearing and inside the sleeve behind the piston and manually turn the engine by hand. Takes two minutes.

Klots oil work very good to, but is very thick (is the same oil they put in some brand of fuel). I want to try to mix it with pure methanol to make it less thick.

Would the Methanol in the mix cause rust?

Is the ATF oil safe in a pump-regulator engine like the YS and pumped OS?
09-18-2009 06:24 PM
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

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i would think the methanol would cause rust since the problem comes when it absorbs water. sofar i have not had any trouble with ATF in my YS engines. i crank the motor to get it everywhere though. taking the backplate off is good, but having some in the fuel lines and cranking the motor gets it everywhere.

this is how i do it.



Shawn
Team Leisure-Tech
Team HelixRC
09-18-2009 06:39 PM
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Skybolt
Heliman
Location: Ontario, Canada

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I do something similar with my 4 Stroke plane engine using the engine vent line.

I notice that it make the silicone vent line swell.
Some airplane guys using ATF in their engines have damage silicone diaphragm in the YS and the Os pump.


That’s why I want to switch to Klots for after run.
09-18-2009 09:50 PM
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

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well, all i can say is the diaphragm on my YS 91 is 3-4 years old, and i store it in the long term with ATF.

Shawn
Team Leisure-Tech
Team HelixRC
09-18-2009 10:53 PM
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Heli 770
rrProfessor
Location: Lemon Grove, Ca. USA.

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On using the ATF. It may make a difference on what make of automobile it's made for.
09-18-2009 11:06 PM
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Blade_Master1
Elite Veteran
Location: Canada

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ATF doesn't eat rubber like oil can

thats why his diaphram last so long

F-27
MSR
Terminator Raven
NX Pro
Raven50
K50
HawkPro(~rip)
Swift 550
09-19-2009 01:20 AM
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Ghostrider
Elite Veteran
Location: San Diego, CA

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Quote 
At the end of the flying day, disconnect the fuel line from the carburetor and run the engine at idle with the glow plug ignitor battery connected until the engine quits. Then make several attempts to start it until it will no longer fire. It will then be dry of fuel. You will not damage your engine running it in tis manner. Remove the glow plug battery connector. Open the throttle to full and inject a teaspoon or two of after-run oil into the carburetor air intake and turn the engine over by hand while you rotate it into a variety of positions. You may need to remove an air cleaner or other intake device to make access easier. A long, flexible tube on your oil can/bottle can help.

O.S. does state that you should not put a petroleum-based oil through the carburetor, but that refers to flowing it through the fuel passages. If you inject it through the carburetor air intake, you will be just fine. If you have a diaphragm pump on the engine, disconnect the pump line so that the oil does not damage the pump diaphragm.

You want to make sure the oil gets to the bearings. A few drops are useless, because there just won't be enough oil to do a good job of coating the internal parts. You cannot add too much after-run oil. If you have difficulty starting the first time at your next flying session, you've done a good job of coating the engine's internals.

This quote was taken from:
Bill Baxter, Manager Hobby Services
3002 N. Apollo Dr. Suite 1
Champaign, IL 61822
USA

Sam Gammo
It's not your altitude, it's your ATTITUDE!
09-19-2009 03:46 AM
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Century Hawk - 50NX - Raven - Predator > after run oil??
 
 
PluckinPheasant
Heliman
Location: Crawley, West Sussex, United Kingdom

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I have always used a 50/50 mix of automatic transmission fluid and petrol/gasoline. Been doing this for 20 years in my OS 4 stroke aero engines. Inject it through the venturi, the petrol helps the viscosity of the ATF.
10-11-2009 11:21 PM
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Century Hawk - 50NX - Raven - Predator > after run oil??
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