Mailing List flyrotary@lancaironline.net Message #36111
From: Russell Duffy <rusty@radrotary.com>
Subject: RE: [FlyRotary] Re: Renesis oil pump picture?
Date: Sun, 11 Mar 2007 11:53:41 -0500
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message
I wonder whether a chain slipping through the oil would really foam it up that badly. The oil in the rotors certainly get churned into a foamy state.  The old connection rod splash rod would really foam the oil as it "beat" the oil several hundred times a minute - but I'll bet if anything the chain will just created a small turbulent area around it but not wide spread as it smoothly slips through the oil.   Just speculation, of course, never seen a chain running through oil. 
 
Hi Ed,
 
Good point...  As usual, I'm probably worrying about nothing.  I know that the RV-3 chain ran in the oil during climbs, because I had a really hard leak to find.  I could run the engine on the ground, and it would never leak, but after a flight, there would be oil.  Eventually, after slopping grey sealer everywhere (sorry Rich), I found the right place to put it. 
 
If you look at a 3rd gen REW front cover, you'll see that they added an extra bolt near the top of the cover.  The spot where they added the bolt used to be a fairly long unsupported area, and it just happens to be right where the oil chain slings oil at a high velocity.  That's where it leaked of course.  
 
Rusty (wondering if I can get away with one oil drain)    
Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster