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Welcome back, Dale. Sometimes, a break is needed to revive the juices.
I have a aluminum tube penetrating my "dry sump" plate over the bottom of the engine. It goes from about 1/4" inside the oil sump hole in the block, througgh a 3/16" aluminum plate and then the aluminum tube curves over into my sump (below level of engine block). While I do have a screen on it - it has a surface area/volume large than the stock. I use an "O" ring to seal the tube through the out side of the plate but use only a stock gasket (capture by the two bolts which held on the old sump). It's worked fine for over 8 years. Yes, as shown in the photo the engine is rotated 90 deg (Plugs Up) and the bottom of the engine shows the plate and sump - the curved blue tube exiting from the plate into the sump is my oil tube.
However, you are correct, you DO NOT want any air leak - the pump would prefer to "suck" air rather than oil.
Ed
Edward L. Anderson
Anderson Electronic Enterprises LLC
305 Reefton Road
Weddington, NC 28104
http://www.andersonee.com
http://www.eicommander.com
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From: <dale.r@cox.net>
Sent: Tuesday, April 26, 2011 2:10 PM
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] Oil pickup
Hi All,
Well the last 21 months have been way too interesting. However, I'm back building again, and my machine shop is functional.
I most humbly apologize if I missed in communicating with anyone during that time. I will admit, I was very discouraged, and just didn't check my personal mail accounts for weeks (months?) at a time.
I am currently making a spacer for the oil pickup to compensate for the thickness of the bed mount. What I'd like to obtain from the wisdom of those who have gone before is whether it is worth machining into it step(s) for an O-ring. The current pickup seems to be using a gasket to seal it (I haven't tried scraping it off, yet. I know I don't need the o-ring to hold pressure the way they have to on the filter housing, but it can't leak the least bit of air either, right? Two gaskets is pretty simple, but then again, two o-ring recesses is just a few minutes with a 20mm mill cutter.
Your thoughts?
Dale Rogers
COZY MkIV #0497
Ch. 13 in-progress
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