[f-AA] Breather Tube Elbow Pipe Extention

[Roger Anderson]

A while back, a drawing of the copper pipe extension to the breather tube elbow was posted.  I believe it was a drawing by Bill Pancake.  I though I saved it.  Guess not.  Does anyone have it?  I need the length of the extension.  Thanks.  roger

[Dan Vandermeer]

Roger

Not Bill Pancake's drawing but is this what you are thinking of?

http://www.cessna120-140.org/forum/files/crankcase_breather_improvementpdf.pdf
Dan v 

On Jul 27, 2013, at 5:09 PM, Roger Anderson <11...@comcast.net> wrote:

A while back, a drawing of the copper pipe extension to the breather tube elbow was posted.  I believe it was a drawing by Bill Pancake.  I though I saved it.  Guess not.  Does anyone have it?  I need the length of the extension.  Thanks.  roger

_______________________________________________
Aeronca mailing list
Aer...@westmont.edu
http://mail.westmont.edu/mailman/listinfo/aeronca

[Roger Anderson]

Hey Dan.  That's the idea.  However, someone (I thought Bill) had done a drawing showing the exact dimension of the extension they had made and used.  I think it extended 3 1/4 inches beyond the threads, but not sure.  Has anyone tried this as a fix for drippy breather tube?   In theory, the oil being slung about in the case no longer can be tossed into the breather opening as easily, resulting in a breather tube dripping less oil.  I have seen the breather routed over the top of the case also resulting in an up hill travel for the breather tube oil.   roger

---

From: "Dan Vandermeer" <vand...@aol.com>
To: aer...@westmont.edu
Sent: Saturday, July 27, 2013 5:21:13 PM
Subject: Re: [f-AA] Breather Tube Elbow Pipe Extention

[Dan Vandermeer]

I dunno. I toyed with the idea of putting one on my 0-200. 

Never got around to it.  If Bill P endorses it, maybe I will. 

Dan

Sent from my iPhone

[Tom Holmes]

From: Roger Anderson <11...@comcast.net>
To: "Aeronca List, aeronca" <aer...@westmont.edu>
Sent: Saturday, July 27, 2013 6:09 PM
Subject: [f-AA] Breather Tube Elbow Pipe Extention

A while back, a drawing of the copper pipe extension to the breather tube elbow was posted.  I believe it was a drawing by Bill Pancake.  I though I saved it.  Guess not.  Does anyone have it?  I need the length of the extension.  Thanks.  roger

[Tom Holmes]

I do both and have clean bellies.

Tom

From: Roger Anderson <11...@comcast.net>
To: aer...@westmont.edu
Sent: Saturday, July 27, 2013 6:30 PM
Subject: Re: [f-AA] Breather Tube Elbow Pipe Extention

Hey Dan.  That's the idea.  However, someone (I thought Bill) had done a drawing showing the exact dimension of the extension they had made and used.  I think it extended 3 1/4 inches beyond the threads, but not sure.  Has anyone tried this as a fix for drippy breather tube?   In theory, the oil being slung about in the case no longer can be tossed into the breather opening as easily, resulting in a breather tube dripping less oil.  I have seen the breather routed over the top of the case also resulting in an up hill travel for the breather tube oil.   roger

From: "Dan Vandermeer" <vand...@aol.com>
To: aer...@westmont.edu
Sent: Saturday, July 27, 2013 5:21:13 PM
Subject: Re: [f-AA] Breather Tube Elbow Pipe Extention

Roger

Not Bill Pancake's drawing but is this what you are thinking of?

http://www.cessna120-140.org/forum/files/crankcase_breather_improvementpdf.pdf
Dan v 

On Jul 27, 2013, at 5:09 PM, Roger Anderson <11...@comcast.net> wrote:

A while back, a drawing of the copper pipe extension to the breather tube elbow was posted.  I believe it was a drawing by Bill Pancake.  I though I saved it.  Guess not.  Does anyone have it?  I need the length of the extension.  Thanks.  roger

_______________________________________________
Aeronca mailing list
Aer...@westmont.edu
http://mail.westmont.edu/mailman/listinfo/aeronca

_______________________________________________
Aeronca mailing list
Aer...@westmont.edu
http://mail.westmont.edu/mailman/listinfo/aeronca

[Roger Anderson]

That's it Tom.  Thanks. Did you make yours?  If so, brazed with solder or used silver solder?  

Sent from my iPhone

<CONT_BREATHER_WEB.jpg>

<engine_oil_breather_tube_extension_p1.JPG>

<engine_oil_breather_tube_extension_p2.JPG>

[ginny wilken]

I did the mod, and also ran the breather tube across the tops of the cylinders and down to the firewall, being careful to cut the slant in the bottom for low pressure. It cleaned up the belly just fine. I also had sealing issues with the oil filler cap, and fooled around with combinations of gaskets to get a good seal.

ginny

On Jul 27, 2013, at 4:17 PM, Tom Holmes <thomasth...@sbcglobal.net> wrote:

<CONT_BREATHER_WEB.jpg><engine_oil_breather_tube_extension_p1.JPG><engine_oil_breather_tube_extension_p2.JPG>_______________________________________________

[Roger Anderson]

ginny.  Tell me more about the slant in the bottom.  Roger

---

From: "ginny wilken" <gwi...@fastmail.fm>
To: aer...@westmont.edu, "Tom Holmes" <thomasth...@sbcglobal.net>
Sent: Saturday, July 27, 2013 7:40:47 PM
Subject: Re: [f-AA] Breather Tube Elbow Pipe Extention

[craig debban]

A few of the guys out here on the left coast have a solution to the problem. They buy a large salt shaker made from aluminum. Punch a hole in the top big enough for the tube and zip tie the shaker inside the cowl someplace. Every so often you dump the mung from the shaker and enjoy your clean belly and hanger floor. FAA/PMA

Craig

---

From: Roger Anderson <11...@comcast.net>

To: "Aeronca List, aeronca" <aer...@westmont.edu>

Sent: Saturday, July 27, 2013 3:09 PM

Subject: [f-AA] Breather Tube Elbow Pipe Extention

A while back, a drawing of the copper pipe extension to the breather tube elbow was posted.  I believe it was a drawing by Bill Pancake.  I though I saved it.  Guess not.  Does anyone have it?  I need the length of the extension.  Thanks.  roger

[ginny wilken]

I just cut it at an angle such that when the plane is in level flight, the front edge is lower than the back so that air is sucked out instead of pushed in. Maybe 20-30 degrees of slant.

ginny

All stunts performed without a net!

[Tom Pederson]

 

FWIW, in discussing this subject a number of years ago,  someone pointed out that extending the end of the tube too far into the lower opening in the cowling (behind the air deflector) exposed it to a partial vacuum caused by the air deflector. This tended to vacuum oil from the tube into the airstream where it coated the belly of the aircraft.  Pulling the tube back away from the opening seemed to lessen the problem considerably. 

On Sat, Jul 27, 2013 at 10:13 PM, ginny wilken <gwi...@fastmail.fm> wrote:

I just cut it at an angle such that when the plane is in level flight, the front edge is lower than the back so that air is sucked out instead of pushed in. Maybe 20-30 degrees of slant.

ginny

​

​ ​

[Roger Anderson]

And....yet another good idea.  I think I'll do the extension and maybe a collector also.  roger

---

From: "craig debban" <justpl...@sbcglobal.net>
To: aer...@westmont.edu
Sent: Saturday, July 27, 2013 11:55:20 PM
Subject: Re: [f-AA] Breather Tube Elbow Pipe Extention

[Roger Anderson]

Thanks ginny.   roger

---

From: "ginny wilken" <gwi...@fastmail.fm>
To: aer...@westmont.edu

Sent: Sunday, July 28, 2013 12:13:46 AM

[Roger Anderson]

There might be something to that theory.  In fact, what got me started on this was the fact that in the last couple of weeks the breather was discharging more oil mess than usual.  And.....just two weeks ago I had replaced the rubber hose coupling along part of the tube which had made the total length slightly longer and does now extend the end of it further down and out towards the airstream.   Hummmm.   roger

---

From: "Tom Pederson" <tpede...@gmail.com>
To: "Aeronca" <aer...@westmont.edu>
Sent: Sunday, July 28, 2013 12:59:42 AM

Subject: Re: [f-AA] Breather Tube Elbow Pipe Extention

[craig debban]

It is accepted practice to have a hole drilled into the breather tube about 12" inside the engine compartment. The hole allows the engine to breath even if the outlet freezes over during cold weather. Additionally it admits air to the breather tube breaking any vacuum action that might be caused by outlet placement.
Craig

---

From: Roger Anderson <11...@comcast.net>
To: aer...@westmont.edu
Sent: Sunday, July 28, 2013 5:14 AM

Subject: Re: [f-AA] Breather Tube Elbow Pipe Extention

[Roger Anderson]

Thanks Craig.  I'm learning all kinds of stuff.  roger

---

From: "craig debban" <justpl...@sbcglobal.net>

To: aer...@westmont.edu
Sent: Sunday, July 28, 2013 10:56:55 AM

[Nearly Normal]

I've heard the little hole keeps the front seal from blowing out. I'm thinking of a specific case where a fellow extended the hose to keep the belly clean and the exposed hose iced up and caused back pressure to build up in the engine. Happened in Idaho on a Citabria, as I recall.

Richard in Creswell, where it is cooler today

[craig debban]

It's happened many more times than once. The front seal doesn't stand a chance against a blocked breather.
Craig

---

From: Nearly Normal <nearlyn...@gmail.com>
To: aer...@westmont.edu
Sent: Sunday, July 28, 2013 12:08 PM

[Roger Anderson]

Well...shucks.  I installed the breather elbow with the extension in it today  and rerouted the breather tube slightly to move it away from the lip of the lower cowling exit point.  I then flew for a while.  I really can't see that either effort made any real difference in breather tube oil discharge.....maybe just a little.  So I guess I'll go with Doug's previously stated thought that a slightly oily plane is a happy plane.  Or if I get too tired of wiping the bottom of the cowl,   maybe I'll install one of the suggested collector containers.   roger

---

From: "Roger Anderson" <11...@comcast.net>

To: "Aeronca List, aeronca" <aer...@westmont.edu>
Sent: Saturday, July 27, 2013 5:09:36 PM
Subject: Breather Tube Elbow Pipe Extention

[Tom Holmes]

And your breather tube is already fully coated wi th  oil.

Tom

From: Roger Anderson <11...@comcast.net>
To: "Aeronca List, aeronca" <aer...@westmont.edu>
Sent: Monday, July 29, 2013 2:13 PM
Subject: [f-AA] Breather Tube Elbow Pipe Extension Update

Well...shucks.  I installed the breather elbow with the extension in it today  and rerouted the breather tube slightly to move it away from the lip of the lower cowling exit point.  I then flew for a while.  I really can't see that either effort made any real difference in breather tube oil discharge.....maybe just a little.  So I guess I'll go with Doug's previously stated thought that a slightly oily plane is a happy plane.  Or if I get too tired of wiping the bottom of the cowl,   maybe I'll install one of the suggested collector containers.   roger

From: "Roger Anderson" <11...@comcast.net>
To: "Aeronca List, aeronca" <aer...@westmont.edu>
Sent: Saturday, July 27, 2013 5:09:36 PM
Subject: Breather Tube Elbow Pipe Extention

A while back, a drawing of the copper pipe extension to the breather tube elbow was posted.  I believe it was a drawing by Bill Pancake.  I though I saved it.  Guess not.  Does anyone have it?  I need the length of the extension.  Thanks.  roger

[craig debban]

Maybe try the hole in the tube trick, if you haven't already done it.
Craig

---

From: Roger Anderson <11...@comcast.net>
To: "Aeronca List, aeronca" <aer...@westmont.edu>

Sent: Monday, July 29, 2013 11:13 AM

Subject: [f-AA] Breather Tube Elbow Pipe Extension Update

[Travis Gregory]

Already has it.

 

travis

From: craig debban <justpl...@sbcglobal.net>
To: "aer...@westmont.edu" <aer...@westmont.edu>
Sent: Monday, July 29, 2013 2:40 PM
Subject: Re: [f-AA] Breather Tube Elbow Pipe Extension Update

Maybe try the hole in the tube trick, if you haven't already done it.
Craig

From: Roger Anderson <11...@comcast.net>
To: "Aeronca List, aeronca" <aer...@westmont.edu>
Sent: Monday, July 29, 2013 11:13 AM
Subject: [f-AA] Breather Tube Elbow Pipe Extension Update

Well...shucks.  I installed the breather elbow with the extension in it today  and rerouted the breather tube slightly to move it away from the lip of the lower cowling exit point.  I then flew for a while.  I really can't see that either effort made any real difference in breather tube oil discharge.....maybe just a little.  So I guess I'll go with Doug's previously stated thought that a slightly oily plane is a happy plane.  Or if I get too tired of wiping the bottom of the cowl,   maybe I'll install one of the suggested collector containers.   roger

From: "Roger Anderson" <11...@comcast.net>
To: "Aeronca List, aeronca" <aer...@westmont.edu>
Sent: Saturday, July 27, 2013 5:09:36 PM
Subject: Breather Tube Elbow Pipe Extention

A while back, a drawing of the copper pipe extension to the breather tube elbow was posted.  I believe it was a drawing by Bill Pancake.  I though I saved it.  Guess not.  Does anyone have it?  I need the length of the extension.  Thanks.  roger

_______________________________________________
Aeronca mailing list
Aer...@westmont.edu
http://mail.westmont.edu/mailman/listinfo/aeronca

[Roger Anderson]

No.  Forgot that.  That's an easy one to try next.   roger

---

From: "Travis Gregory" <nc4...@yahoo.com>
To: aer...@westmont.edu, "craig debban" <justpl...@sbcglobal.net>
Sent: Monday, July 29, 2013 3:24:47 PM

[CaptG...@aol.com]

Travis--

 

When I overhauled my engine using the Specialities STC, I used new Continental Cylinders and don't have a problem with the oil dripping.  

 

Doug

[John Propst]

Dan, When Bill rebuilt my C 85 engine, he fabricated and put one on it. I searched around but could not find a dimensioned drawing.

 

John Propst

313 Hickory Grove Ln

Elizabeth, WV 26143

Cell 304 588 3690

Home 304 275 4666

Email:  J.E.P...@ieee.org

[Roger Anderson]

Ok. As previously mentioned,  I put an extension in the breather tube elbow, relocated the breather tube further from the lower cowl lip, drilled a hole into the tube up 12 inches or so...and I still was getting a bit of oily drips on the bottom of the cowl.  However, I will say, I don't think as much as before I started all of this.  Unfortunately, I really don't know which effort may have caused improvement...maybe all of them slightly.   So I went with suggestion number four, the catch bottle.   I cut a hole in the top of a medicine bottle leaving the hole a very tight fit for the breather tube.  I drilled four holes around the top of the bottle so the breather could...well breathe.  I pushed the bottle cap up on the tube. It was so snug that I really don't think it would ever slide off the tube.  However, I then pushed a small piece of heater hose onto the end of the tube and intended to tighten a  plastic tie around it to keep it firmly in place.  The tie wasn't necessary because the hose was pushed on so tight.  I then screwed the bottle in place and went flying.   Perfect.  Came back an hour later and the bottle had about one ounce of "stuff" in it and of course not a drop on the cowling or bottom of the plane.  The "stuff", while looking like oil was mostly a watery/oily mix.   Super simple wins again.   Thanks for all the suggestions.  roger

---

From: "John Propst" <jpro...@peoplepc.com>
To: aer...@westmont.edu
Sent: Sunday, August 4, 2013 4:33:26 AM

[craig debban]

Don't forget the bottle has to breath... otherwise you pressurize the crankcase. That can cause the the front seal to be pushed out of the case. Not good.
The aluminum salt shaker is ideal.
Craig

---

From: Roger Anderson <11...@comcast.net>
To: aer...@westmont.edu
Sent: Sunday, August 4, 2013 11:18 AM
Subject: [f-AA] Breather Tube Elbow Pipe Extension...Sequel

[Roger Anderson]

It can. I drilled it appropriately and pressure tested. Had no resistance under moderate pressure. Thanks.  

Sent from my iPhone

[Tom Holmes]

The breather hole in the vent line will also relieve some pressure.

Tom

From: Roger Anderson <11...@comcast.net>
To: "aer...@westmont.edu" <aer...@westmont.edu>; craig debban <justpl...@sbcglobal.net>
Sent: Sunday, August 4, 2013 6:35 PM
Subject: Re: [f-AA] Breather Tube Elbow Pipe Extension...Sequel

It can. I drilled it appropriately and pressure tested. Had no resistance under moderate pressure. Thanks.  

Sent from my iPhone

On Aug 4, 2013, at 5:22 PM, craig debban <justpl...@sbcglobal.net> wrote:

Don't forget the bottle has to breath... otherwise you pressurize the crankcase. That can cause the the front seal to be pushed out of the case. Not good.
The aluminum salt shaker is ideal.
Craig

From: Roger Anderson <11...@comcast.net>
To: aer...@westmont.edu
Sent: Sunday, August 4, 2013 11:18 AM
Subject: [f-AA] Breather Tube Elbow Pipe Extension...Sequel

Ok. As previously mentioned,  I put an extension in the breather tube elbow, relocated the breather tube further from the lower cowl lip, drilled a hole into the tube up 12 inches or so...and I still was getting a bit of oily drips on the bottom of the cowl.  However, I will say, I don't think as much as before I started all of this.  Unfortunately, I really don't know which effort may have caused improvement...maybe all of them slightly.   So I went with suggestion number four, the catch bottle.   I cut a hole in the top of a medicine bottle leaving the hole a very tight fit for the breather tube.  I drilled four holes around the top of the bottle so the breather could...well breathe.  I pushed the bottle cap up on the tube. It was so snug that I really don't think it would ever slide off the tube.  However, I then pushed a small piece of heater hose onto the end of the tube and intended to tighten a  plastic tie around it to keep it firmly in place.  The tie wasn't necessary because the hose was pushed on so tight.  I then screwed the bottle in place and went flying.   Perfect.  Came back an hour later and the bottle had about one ounce of "stuff" in it and of course not a drop on the cowling or bottom of the plane.  The "stuff", while looking like oil was mostly a watery/oily mix.   Super simple wins again.   Thanks for all the suggestions.  roger

[Stephen Briggs]

Here's one John.

 

 

 

 

---

From: jpro...@peoplepc.com
To: aer...@westmont.edu
Date: Sun, 4 Aug 2013 05:33:26 -0400

[Ian Harvie]

Still going through the hundreds of mails piled up. May be someone
answered this but here is the drawing.

Ian

[Roger Anderson]

Here's another bunch of info on that extension courtesy of Tom Holmes a few years ago.   roger

---

From: "Tom Holmes" <thomasth...@sbcglobal.net>
To: aer...@westmont.edu
Sent: Saturday, July 27, 2013 6:17:35 PM

Subject: Re: [f-AA] Breather Tube Elbow Pipe Extention

[Shaw Siglin]

I just did this a few weeks ago (see photo).  Open pipe thread diameter to 5/8" to base of threads.  Cut a piece of 1/2" copper pipe to about 3.5".  Deburr, Solder or braze into opened-up fitting.  Resulting protrusion of copper pipe should be about 2.75".

Shaw

[Roger Anderson]

Here you go Philip. Attachments.   However, for mine I can't say I saw much difference.   roger

[Richard Murray]

Roger you should post the picture again of your solution for trapping the blow-by, which appears to solve the issue.

On Wed, Dec 28, 2016 at 7:39 AM, Roger Anderson <11...@comcast.net> wrote:

Here you go Philip. Attachments.   However, for mine I can't say I saw much difference.   roger

---

From: "Tom Holmes" <thomastholmes512@sbcglobal.net>

To: aer...@westmont.edu
Sent: Saturday, July 27, 2013 6:17:35 PM
Subject: Re: [f-AA] Breather Tube Elbow Pipe Extention

From: Roger Anderson <11...@comcast.net>
To: "Aeronca List, aeronca" <aer...@westmont.edu>
Sent: Saturday, July 27, 2013 6:09 PM
Subject: [f-AA] Breather Tube Elbow Pipe Extention

A while back, a drawing of the copper pipe extension to the breather tube elbow was posted.  I believe it was a drawing by Bill Pancake.  I though I saved it.  Guess not.  Does anyone have it?  I need the length of the extension.  Thanks.  roger

_______________________________________________
Aeronca mailing list
Aer...@westmont.edu
http://mail.westmont.edu/mailman/listinfo/aeronca

_______________________________________________
Aeronca mailing list
Aer...@westmont.edu
http://mail.westmont.edu/mailman/listinfo/aeronca

[Cy Galley]

   

 

From: Aeronca [mailto:aeronca...@westmont.edu] On Behalf Of Richard Murray

Sent: Wednesday, December 28, 2016 7:29 AM
To: aer...@westmont.edu

Subject: Re: [f-AA] Fwd: Breather Tube Elbow Pipe Extention

 

Roger you should post the picture again of your solution for trapping the blow-by, which appears to solve the issue.

On Wed, Dec 28, 2016 at 7:39 AM, Roger Anderson <11...@comcast.net> wrote:

[Cy Galley]

Crankcase breather improvement

For those of you tired of oil on the belly and don't want to go to the hassle and expense of installing an oil/air separator (such as the M20 unit), you could install an aerobatic breather elbow that was used in Cessna 150 Aerobats. Its is a standard brass elbow milled out to accept a steel tube which is then silver soldered into the elbow. The Continental part number for the aerobatic elbow is 633182 and the part number for the standard elbow is AN842-10 which is a standard part.

Beware that several years ago someone manufactured a number of bogus aerobatic elbows and you should obtain a known legal part, either removed from an aerobat engine or new from a Continental parts distributor.

Below are three pics, the first is a comparison of the two elbows.

The next pic is of the inside of the Right Hand side of the O-200 engine case showing the opening where the elbow is screwed in from outside. This is a well shielded area that only gets oil spray coming off the front of the main bearing below it. (note the channel just above the LH stud in the photo, where oil coming from the front of the front main bearing is thrown by the oil slinger on the crankshaft out thru this channel and one like it below the bearing).

This pic shows the same view with the aerobatic elbow installed. It would be much more difficult for oil to find its way into the end of this tube suspended in mid-space than the standard elbow, where all the oil has to do is run down the top of the case till it reaches the hole and is drawn out by airflow.

Here is a testimonial of sorts about the aerobat crankcase breather fitting. In the early summer of 2001 several folks got together and ordered the aerobat crankcase breather fittings from Continental. They were able to get a slight discount by ordering in quantity and what follows is a posting from the 150-152 club discussion group on Yahoo about one person's initial experience with the new breather fitting. It is from Sam Rosenfeld. (July 15, 2001, post #7943)

"Installed the Aerobat breather about 2 weeks ago. Some results (not at all scientific): 1. Drip test - upon shutdown - I swear I now get only about half as many drops of oil than before. 2. Belly test - not sure but it seems that I get much less blowing out the breather and onto the belly than before. The real test I guess will be how much oil I'm adding over time - can't tell after just 6 or 7 hours . . . So far though - it seems to be quite an improvement!! Sam 150K - 6001G"

 

Another testimonial of the aerobat crankcase breather fitting, this one from Mike Bratton, about his 1965 150E, from the Cessna 150-152 Club Discussion Group on Yahoo, (April 3, 2002, post #18198)

"Installation of the aerobat breather tube resulted in going from a average oil consumption of 3 hours per quart to 7 hours per quart of oil. This plane also has the wet vacuum pump which accounts for some oil blown overboard also....  All in all very happy with both changes I made last year. Of course your mileage and results may differ.... Mike Bratton N3577J C150E"

 

 

From: Aeronca [mailto:aeronca...@westmont.edu] On Behalf Of Richard Murray
Sent: Wednesday, December 28, 2016 7:29 AM
To: aer...@westmont.edu
Subject: Re: [f-AA] Fwd: Breather Tube Elbow Pipe Extention

 

Roger you should post the picture again of your solution for trapping the blow-by, which appears to solve the issue.

On Wed, Dec 28, 2016 at 7:39 AM, Roger Anderson <11...@comcast.net> wrote:

[Thomas Holmes]

And install it with the L at a slight angle upwards, run the vent tube across the top of the engine to give the vented oil a slight hill to climb.  

Tampa Tom

On Wed, Dec 28, 2016 at 6:17 PM, Cy Galley <cga...@mchsi.com> wrote:

Crankcase breather improvement

For those of you tired of oil on the belly and don't want to go to the hassle and expense of installing an oil/air separator (such as the M20 unit), you could install an aerobatic breather elbow that was used in Cessna 150 Aerobats. Its is a standard brass elbow milled out to accept a steel tube which is then silver soldered into the elbow. The Continental part number for the aerobatic elbow is 633182 and the part number for the standard elbow is AN842-10 which is a standard part.

Beware that several years ago someone manufactured a number of bogus aerobatic elbows and you should obtain a known legal part, either removed from an aerobat engine or new from a Continental parts distributor.

Below are three pics, the first is a comparison of the two elbows.

The next pic is of the inside of the Right Hand side of the O-200 engine case showing the opening where the elbow is screwed in from outside. This is a well shielded area that only gets oil spray coming off the front of the main bearing below it. (note the channel just above the LH stud in the photo, where oil coming from the front of the front main bearing is thrown by the oil slinger on the crankshaft out thru this channel and one like it below the bearing).

This pic shows the same view with the aerobatic elbow installed. It would be much more difficult for oil to find its way into the end of this tube suspended in mid-space than the standard elbow, where all the oil has to do is run down the top of the case till it reaches the hole and is drawn out by airflow.

Here is a testimonial of sorts about the aerobat crankcase breather fitting. In the early summer of 2001 several folks got together and ordered the aerobat crankcase breather fittings from Continental. They were able to get a slight discount by ordering in quantity and what follows is a posting from the 150-152 club discussion group on Yahoo about one person's initial experience with the new breather fitting. It is from Sam Rosenfeld. (July 15, 2001, post #7943)

"Installed the Aerobat breather about 2 weeks ago. Some results (not at all scientific): 1. Drip test - upon shutdown - I swear I now get only about half as many drops of oil than before. 2. Belly test - not sure but it seems that I get much less blowing out the breather and onto the belly than before. The real test I guess will be how much oil I'm adding over time - can't tell after just 6 or 7 hours . . . So far though - it seems to be quite an improvement!! Sam 150K - 6001G"

 

Another testimonial of the aerobat crankcase breather fitting, this one from Mike Bratton, about his 1965 150E, from the Cessna 150-152 Club Discussion Group on Yahoo, (April 3, 2002, post #18198)

"Installation of the aerobat breather tube resulted in going from a average oil consumption of 3 hours per quart to 7 hours per quart of oil. This plane also has the wet vacuum pump which accounts for some oil blown overboard also....  All in all very happy with both changes I made last year. Of course your mileage and results may differ.... Mike Bratton N3577J C150E"

 

 

From: Aeronca [mailto:aeronca-bounces@westmont.edu] On Behalf Of Richard Murray
Sent: Wednesday, December 28, 2016 7:29 AM
To: aer...@westmont.edu
Subject: Re: [f-AA] Fwd: Breather Tube Elbow Pipe Extention

 

Roger you should post the picture again of your solution for trapping the blow-by, which appears to solve the issue.

On Wed, Dec 28, 2016 at 7:39 AM, Roger Anderson <11...@comcast.net> wrote:

Here you go Philip. Attachments.   However, for mine I can't say I saw much difference.   roger

 

---

[Roger Anderson]

Ian, Dean, here's another look at it as circulated a few years ago.  I believe Bill Pancake may have provided it... maybe.  I made one for my A65 and hoped for miracle cure from breather blow by.  I think it did improve a little, but not a complete cure at all for my engine.  roger

---

Subject: Re: [f-AA] Breather Tube Elbow Pipe Extention

_______________________________________________
Aeronca mailing list
Aer...@westmont.edu
http://mail.westmont.edu/mailman/listinfo/aeronca

[Roger Anderson]

Actually, Tom Holmes posted this one back then for me.   roger

---

From: "Roger Anderson" <11...@comcast.net>
To: "Aeronca List, aeronca" <aer...@westmont.edu>

Sent: Friday, May 26, 2017 7:34:54 AM

[Dean Owen]

Thanks Roger...!

 

I fly because it releases my mind from the tyranny of petty things."  Antoine de Saint- Exupery.

Prof. Dr. Dean Owen
Middle East Technical University
Northern Cyprus Campus
R-130
Ofc Tele: +90 392 661 2912
Hm Tele: +90 0392 661 2373
email: de...@metu.edu.tr

Call

Send SMS

Add to Skype

You'll need Skype CreditFree via Skype

---

From: Roger Anderson <11...@comcast.net>
To: "Aeronca List, aeronca" <aer...@westmont.edu>

Sent: Friday, May 26, 2017 2:35 PM

Subject: Re: [f-AA] Breather Tube Elbow Pipe Extention

[Roger Anderson]

Hey Ian.  I didn't see the request message.  However, here it is.   roger

[Ian Harvie]

Thanks Roger, now I can delete the message to myself!

Ian

Sent from my iPhone

<CONT_BREATHER_WEB.jpg>

<engine_oil_breather_tube_extension_p1.JPG>

<engine_oil_breather_tube_extension_p2.JPG>

[Bob Jacoby]

I just had to post this because I was so proud of the way it came out!

I eliminated the problem from having the oil from the bottom of the breather tube soaking the underbelly of my aircraft by installing this extended tube, and extending the other end of the tube about 2 1/2 inches below the fuselage. 

Contrary to popular wisdom, it did not suck all the oil and out of the engine!  It drips after I land and shut down, but it doesn't seem to drip that way in flight. If it did I would notice significantly higher oil usage.

[Roger Anderson]

Wow.  Looks nice!  roger

---

From: "Bob Jacoby" <robert...@gmail.com>
To: aer...@westmont.edu
Sent: Sunday, July 30, 2017 1:23:03 PM
Subject: Re: [f-AA] For Ian.... Breather Tube Elbow Pipe Extention

[Doug Rounds]

Old Hat Roger..