flyrotary@lancaironline.net Mailing List Archive

That engine mount hole in the center housing is 12mm x 1.5mm thread.

http://www.anplumbing.com/shop/index.php?shop=&dept=Aluminum

part #9919BFG is a 12-1.5 metric to AN4 aluminum adaptor.
How about just drilling through the iron and installing one of these? No tapping required.

Joe Hull wrote:

Message

Paul-

If you’re looking for a new home for your PSRU oil drain; I found it was really easy to drill through one of the engine mount holes on the plugs side for my oil return. The existing stud hole sizes are just shy of the ¼ NPT we need and the holes are above the oil level. I put my return into the bottom-rear hole (see picture).

This of course assumes you aren’t using the engine mount area for something strange…like your engine mount ;-)

Joe Hull

Cozy MkIV #991 (working on Engine & Electrical & Finishing)

http://www.maddyhome.com/canardpages/pages/JoeHull/index.html

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of paul
Sent: Sunday, August 29, 2004 7:23 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: redrive oil return, was Re: New Cooling Setup

Hey, Steve....thanks for the pictures. Since I already have the aluminum plate covering the oil metering pump, it would be easy to drill and tap that. After hearing what Rusty had to say, I'm not sure if I might be better off leaving it as is.....Need to ponder this one. Thanks for taking the time to share your pictures, and I hope your cooling temps get under control so you can just go fly and enjoy the fruits of your labor. Paul Conner, 13b powered SQ2000

----- Original Message -----

From: Steve Brooks

To: Rotary motors in aircraft

Sent: Sunday, August 29, 2004 10:17 AM

Subject: [FlyRotary] Re: redrive oil return, was Re: New Cooling Setup

Here are a couple of photos of mine.

Steve Brooks

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Russell Duffy
Sent: Sunday, August 29, 2004 10:30 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: redrive oil return, was Re: New Cooling Setup

Hi, Rusty....My 13b has an aluminum plate covering the old injection pump location. Do I just drill and tap for an NPT fitting in the plate covering the old pump?

Ooops, I just remembered that I'm actually returning to the turbo oil drain location on the front cover, and not the injector pump location.  When I took the turbo off, I just made an aluminum cover plate with a hole tapped for 1/4" NPT.

You don't by chance have an old picture lying around that shows your plate and/or fitting going into the engine do you?

Amazingly, I don't have a picture that shows it.

My return line presently goes to the oil pan, but to drain the oil, I have to first remove the PSRU drain line. It would be better to run it to the oil oil injection location. Thanks for the info. Paul Conner

I ran my oil drain to the oil pan plug location on the original engine. This violates the rule of returning oil below the level of oil in the pan, but it worked fine. Having to remove the PSRU drain line to drain the oil was the best part of that system. I left the line free, so I could remove it at the redrive, then lower it toward my catch pan to drain the oil. It was totally mess-free. I miss that now, especially when I have to drain a little oil to make up for the pre-mix scavenging.

Rusty



>> Homepage: http://www.flyrotary.com/
>> Archive:   http://lancaironline.net/lists/flyrotary/List.html
      