I made a oil separator for my Hatz Bi-plane. Almost as described below but fitted a small electric pump to pump the oil back to the sump. Due to the sump pressure and Newtons law that flow takes the path of least resistance the oil will not run back to the sump on its own. The separator works like a cyclone with drop arresters inside. The pipe from your engine casing goes into the side of the container and the oil return is at the bottom. Right at the top is the air outlet. Inside you put Pot Scrapers with steel wool at the top. Old Lycomings always use oil when the blow buy starts to increase. Now I recover the oil in this way.
http://www.greatplainsas.com/sccaseparts > html > > I routed it to this separator that I made. I am sure that you can buy them, > but they are easy enough to make. > > http://krbuilder.org/FirewallForward/index.html About 1/4 of the scroll > down on the thumbnails. > > See N64KR at http://KRBuilder.org - Then click on the pics > See you at the 2007 - KR Gathering > There is a time for building and a time for FLYING and the time for Flying > has begun. > Daniel R. Heath - Lexington, SC > -------Original Message------- > > original VW breather cap with a safety wire internally to keep it on. > [mushroom looking cap] > Is this acceptable or should I replace it with something else? > >