To low for the drain of return oil, if you still have the pan off we drilled through one of the lower holes in the center iron, plugs side, tapped for the fitting we wanted, sits above oil level yet lower than PSRU has worked great, all plumbed with AN fittings & SS 3/8" line ( carefull bending, that stuff will break your bender ). David R. Cook RV6A Rotary. will look for photos tonight............
From: "William Mason" <flyrotary@lancaironline.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, May 7, 2015 12:28:07 AM
Subject: [FlyRotary] PSRU oil supply and drain
Hello all,
I am plumbing the PSRU for both supply and drain.
My rear iron has been modified by Bruce Turrentine-- so I can't use a spacer between the filter and the pad to create an oil supply for the PSRU but plan to-- with the group's consensus-- use a T in the line that would normally feed the turbo alone from the front iron. The feed and return to the filter pad have been plugged by what seems to be threaded plugs with allen heads. I tried to gingerly remove the feed one and abandoned the idea as it seemed to be very well seated. I did not try heat and I could have. Maybe I should revisit the idea?
I did not buy the engine from Bruce-- instead I sourced it second-hand. I don't personally know Bruce and I'm not sure how he'd like to have me pick his brain on this matter. I figured I'd leave him alone.
I am using a journal bearing turbo and I am running a restrictor at the turbo oil inlet. I would then use a t fitting and branch off for the PSRU feed.
My plans are to use a spacer between the oil pan and the oil level sending unit and tap it for a fitting... the drain then would enter the same space that the oil level sender occupies in the pan... make sense?
Does anybody see a good reason not to do either of those?
I'm down to plumbing and wiring now. Head scratching is becoming more common in my shop routines.
Please advise.
Regards,
Bill Mason
Sent from my iPad
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