Question on vent tube oil filter or separator

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Hog Guts
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Question on vent tube oil filter or separator

Post by Hog Guts » Thu Sep 18, 2014 10:36 pm

I read before where someone had an oil filter or separator on their vent tube and they said it prevented the oil from blowing out the vent tube. I know nothing about this but it seems logical that would work but I also would think if it did everyone would have one to prevent oil loss. Not sure how air can flow through a device that was blocking oil though because it seems the oil would prevent the air from passing freely. Any way I was wondering if anyone could educate me on if this is real and works. Thanks


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twister69z
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Re: Question on vent tube oil filter or separator

Post by twister69z » Thu Sep 18, 2014 11:30 pm

http://auto.howstuffworks.com/positive- ... ystem1.htm
The pressurized oil /air vent into a larger chamber where the oil "drops out" of the air, gravity flows the oil into the bottom of the separator and is recycled into the crankcase , the air is vented overboard or into the air cleaner and burned during combustion. Also the recycled oil can be drained into a receptacle ( a plastic bottle works ) .
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gyrocopter582
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Re: Question on vent tube oil filter or separator

Post by gyrocopter582 » Fri Sep 19, 2014 7:08 am

Air-oil separator. The oil is routed back into the engine by an oil line connected to a convenient fitting.
Aircraft Spruce has them. I installed one recently, and the return line tapped into the oil dipstick tube.
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dshaw94
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Re: Question on vent tube oil filter or separator

Post by dshaw94 » Fri Sep 19, 2014 7:40 am

I made one out of a generic plastic radiator overflow tank. Works great! I bet I recovery between 1 and 2 quarts per ride with it. May look less than idea, but it saves money and the environment one quart at a time.
Good stuff :salute:
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happy harold
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Re: Question on vent tube oil filter or separator

Post by happy harold » Fri Sep 19, 2014 8:33 am

not a complete cure, but helped a bunch for me.

FLA BOY
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Re: Question on vent tube oil filter or separator

Post by FLA BOY » Fri Sep 19, 2014 11:43 am

Schmidt Aviation has them. I bought one for my GPU and it def helps.
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Chickenrig
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Re: Question on vent tube oil filter or separator

Post by Chickenrig » Fri Sep 19, 2014 3:22 pm

I got one from Antisplataero.com and it works awesome .it cut my oil use in thirds
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jopete
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Re: Question on vent tube oil filter or separator

Post by jopete » Fri Sep 19, 2014 3:26 pm

i just run my vents out the top of the cage and let her rip!!!!

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goldhunter_2
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Re: Question on vent tube oil filter or separator

Post by goldhunter_2 » Fri Sep 19, 2014 4:04 pm

I made one before out of a old aluminum ac dyer then run a return/recovery line back down to the engine sump

they work on the same theory as a still different liquids condense at temp then cool and the more surface area they have to sit on the oil would cool and drain down while the air and most water woudl continue out the tube
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Hog Guts
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Re: Question on vent tube oil filter or separator

Post by Hog Guts » Fri Sep 19, 2014 6:01 pm

Those of you who saw a reduction in lost oil did you have your vent tube going to too of cage or bottom?


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terrible ted
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Re: Question on vent tube oil filter or separator

Post by terrible ted » Fri Sep 19, 2014 7:03 pm

Got rid of mine. My motor had a bade problem turned out it was the position of the vent tube (vo540). what motor do you have and how much oil.

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lbdb1a
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Re: Question on vent tube oil filter or separator

Post by lbdb1a » Fri Sep 19, 2014 10:14 pm

I installed a Moroso breather can as shown in the picture. It has an internal baffle...stainless steel wool...exit air filter...drain valve...AL can...mount brkt.

The moisture in the breather air condenses in the can along with the oil that is seperated so you just drain it to check the amount etc.

The clean air exits thru the air filter .

Larry


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PICT0613 (640x480).jpg

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lbdb1a
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Re: Question on vent tube oil filter or separator

Post by lbdb1a » Fri Sep 19, 2014 10:19 pm

Photo of oil can.
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PICT0613 (640x480).jpg

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John Fenner
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Re: Question on vent tube oil filter or separator

Post by John Fenner » Sun Sep 21, 2014 11:36 am

If you step up the hose size it won't have the velocity to let oil push up the line.
I never finish anyth,,,.

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mojoe
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Re: Question on vent tube oil filter or separator

Post by mojoe » Sun Sep 21, 2014 2:39 pm

You may want to put a "catch bottle" on your vent tube first. Just to see how much oil you are really talking about. Zip tie a Gatorade bottle or something to the end. Leave a gap so vapor can get out but liquid will accumulate in the bottle. That would tell you how much oil you are blowing out on a typical ride and subsequently, wether or not it would be worth setting up a nice one.
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