Mailing List flyrotary@lancaironline.net Message #63637
From: <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Coolers
Date: Sat, 19 Aug 2017 01:02:41 -0400
To: <flyrotary@lancaironline.net>
I use two K&N filter cans on the racer. 350 pound burst cans. One would be more than enough for an airplane at 6 or 7 thousand RPM. Most cans have a bypass delta. So if the element gets lots of dirt in it or the flow gets too high the element is pushed down away from the cover and oil can still get through the filter head. When this happens, the oil is not only not being filtered, it is now gathering up the debris already removed from the oil and passing it along in the outgoing oil. Or if the problem is element collapse, then pieces of element paper are sent down stream to the bearings. If that filter is just a bug screen, then no problem. If it has a paper filter element, cut it open and be sure it has more than 125 sq. inches of media. If that can has no bypass feature, element collapse just shuts off the oil supply. The stock can is small and light weight, but, it is in a street car with a low duty cycle. You should have cut open the can after the first hour anyway, looking for scrap metal and bits of sealant. Very nice workmanship.
Lynn E. Hanover
 
In a message dated 8/18/2017 7:18:12 P.M. Eastern Daylight Time, flyrotary@lancaironline.net writes:

The only one that I found on eBay!
I was watching for years when I got a notice that one was listed and then I won the auction. I think it came out of England. It still wasn't cheap but had never been used.

https://goo.gl/photos/JDJMBhxzdZBXSFfn8

I don't remember the model number and there isn't one that I can see on it.


On Fri, Aug 18, 2017, 07:33 A R Goldman, <flyrotary@lancaironline.net> wrote:
Todd I too am using the laminova-- not started the engine yet and won't for a while--

Which model did you choose???

Thanx

Rich

Sent from my iPhone

On Aug 17, 2017, at 9:50 PM, Todd Bartrim <flyrotary@lancaironline.net> wrote:

Hi Andrew; 
  I put one of these Laminova exchangers from Mocal in my plane.
Very compact but still a few pounds, but it seems to work well so far.
I used to see better oil cooling in climb than water cooling, but in cruise I had better water cooling than oil cooling.
  This was likely from my old, good looking oil cooler scoop, which I don't think was very efficient. I've cut that off and changed it to more of a P51 style scoop. Still looks ok, but it should work much better, so when I return to flight I'll not be able to say definitively if any improvements are due to the Laminova cooler or the improved airflow. However, so far in static ground tests my H2O/Oil temps are quite close.

Todd   waiting for the smoke to clear

https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail Virus-free. www.avast.com

Todd Bartrim

On Thu, Aug 17, 2017 at 1:06 PM, Lehanover <flyrotary@lancaironline.net> wrote:

Lynn, from your explanation, seems to confirm my gut feel that I need to have that external OCV, to cool all the oil being pumped. but maybe I could use a oil to coolant exchanger to even up the system capacities.

Cheers Andrew

I tried one of those years ago. Big. Very heavy with both water and oil inside. Oil temps were fine. Water temps too high.  I cut off the outer shell and used it as a oil to air, transmission cooler. It is just a standard oil to air cooler in a box full of water.

Mazda had one in the RX-7...........for one year. I mounted under the oil filter.

Lynn E. Hanover

 


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