From: "Jeff Whaley jwhaley@datacast.com" <flyrotary@lancaironline.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: flyrotary Sump Breather
Thread-Topic: flyrotary Sump Breather
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Date: Sun, 1 Nov 2020 13:25:12 +0000
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Hi Steve, the 13B sump breather is almost irrelevant. It is connected to th=
e oil pan which is totally sealed from the engine block - other than the ai=
r expansion from hot oil Vs cold oil there is no excessive pressure build u=
p going on ... For my original setup, I drilled a 5/16 hole in the oil fill=
er cap and left the 1/4 inch return line connection open. Never saw any sig=
n of oil spray coming out of either - -.  Now I have increased the 1/4 inch=
 return to 3/8 and connected it to my redrive as a breather/secondary oil r=
eturn ... So whatever that "breather" was doing it is now very restricted w=
ith no ill effects ....  Jeff =20
Sent from my BlackBerry=AE phone powered by Koodo Mobile=AE.

-----Original Message-----
From: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sender: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Date: Sun, 01 Nov 2020 06:00:50=20
To: Rotary motors in aircraft<flyrotary@lancaironline.net>
Subject: flyrotary Digest #5031

        Rotary motors in aircraft Digest #5031

 1) Sump Breather?
    by "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net=
>

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