Rusty,

 

You were looking for a banjo fitting for the oil return line from the cooler.  Here’s another option to avoid the engine mount.

 

Take a metric-to-AN fitting, M18x1.5 to AN-10 male and cut it in half.  Drill out each half slightly and insert a piece of 5/8” 4130 and braze.  Very strong, easy to get on and off, and avoids the engine mount (looks close in this picture, but length of tube determines how much you’ll miss the mount).  3.5” of tubing will work well.  You’d think it might break, but if you have about ½” of the tube brazed inside each end (2.5” of exposed tube), you’ll see this is strong and well supported from within the engine threading.  The 5/8” 4130 I used was 0.62” wall thickness, leaving the interior at ½”, preserving the AN-10 flow rate.  Took about an hour to make.

 

 

Chris Sargent

 

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Russell Duffy
Sent: Sunday, January 23, 2005 9:10 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: oil return banjo fitting?

 

Rusty, I have eliminated all my banjo fittings. You can get the adapters from Summit Racing.
Buly 

 

Hi Buly,

 

Getting a metric to AN adapter is relatively easy, but it won't fit.  The engine mount portion of the CCI mount plate gets in the way of the oil return fitting, so you can only use something very low profile, like a banjo fitting.   Another thought would be to build the oil return into the oil filter adapter block, like I believe is done on the FD.  My current fitting has surprised me by not leaking, but I don't want to push my luck.  

 

Cheers,

Rusty