Mailing List flyrotary@lancaironline.net Message #19541
From: Wendell Voto <jwvoto@itlnet.net>
Subject: Re: [FlyRotary] Re: Oil Flow
Date: Tue, 29 Mar 2005 09:49:19 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message

Rusty and all who are trying to help,

Thanks a bunch.

The engine is a rebuild and set for about 2 years. After the discussion about the oil pump drive shaft key, I pulled the front cover off and checked for proper placement of the key and all looked ok. I didn't have much hope on it pulling up oil on first attempt and it didn't. So after priming it with oil, it just pushed out the priming oil and no more. Took off pan, cleaned out Halomar and made new thicker gasket, reassembled and primed again. Got bunch of oil and as previously stated it just didn't seem consistent after a few tries. Would pump as long as I dared to keep starter going when I was getting flow, and was surprised that the starter didn't even get warm to the touch.  Regular Mazda starters must be hefty.

Rusty, I think I'll go ahead and try a full start as soon as I can get a good oil pressure gauge set up.

Thanks guys,

Wendell (still all oily)

 
 Hi Wendell,

I've done the starter thing on a few occasions now, and have always been able to eventually get pressure, but I can't say I ever checked it multiple times, so I don't know if it's normal to come and go like you're describing.  It doesn't seem normal, but cranking speed is pretty slow, and it does take a while to move oil at that speed.  Basically, after I got pressure for a few seconds, I considered it ready to crank. 

Is this a fresh engine that was just rebuilt?  In other words, it's still full of assembly lube??  If so, I think I'd go ahead with the first start, and just watch the oil pressure.  I would expect to see pressure quickly, within 5 seconds or so (which will seem like an eternity).  That's just what I would do, which certainly doesn't make it right :-)

Good luck,

Rusty (Raven on order)

 

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