Hey Rino, I would agree that 125F is too cold as well.

My situation is different though as the water temp is 175F when the oil is 135F … I plan to make some restrictor grills for my oil cooler inlets – shooting for 160F year-round.  Don’t forget that is oil-inlet temperature; not sure what the pan or oil-out temperature would be.

Jeff

 

 

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

From: James Maher

To: Rotary motors in aircraft

Sent: Monday, October 19, 2009 3:16 PM

Subject: [FlyRotary] Re: Cold Oil ... was Spark Plugs

 

Rino, Do you have coolent and oil thermostats in your system? If you did you should not see such low temps.   Jim --- On Mon, 10/19/09, Rino <lacombr@nbnet.nb.ca> wrote: From: Rino <lacombr@nbnet.nb.ca> Subject: [FlyRotary] Re: Cold Oil ... was Spark Plugs To: "Rotary motors in aircraft" <flyrotary@lancaironline.net> Date: Monday, October 19, 2009, 12:39 PM both oil and water temp were about 125 F on final to landing which I feel is too cold for a landing overshoot.  I normally take off when the oil temp is 140 F or more.  I would like to see above 160 temp all the time for oil and water.   Rino ----- Original Message ----- From: Jeff Whaley To: Rotary motors in aircraft Sent: Monday, October 19, 2009 12:02 PM Subject: [FlyRotary] Re: Cold Oil ... was Spark Plugs   Rino and Group: I’m curious about the comments with regards to the cold engine  … are you more concerned about oil or water temp? Lynn has posted several times that oil temperatures ABOVE 160F rob power from the rotary, so that should mean oil temps below 160F are a good thing. How low is too low? On my last flight the oil temp was about 135F in cruise … with synthetic or multi-viscosity oil (15W50 for example), low oil temps should not be problem. Jeff   Rino posted: How long do the sparkplugs should last on the Renesis engine. My engine is starting to run rough and I suspect the plugs. I have to say that it is also running too cold, it goes down to about 160 F (oil and water) when coming in for a landing which is usually 3500 rpm.  I have the NGK iridium plugs, lead RE7C and trail RE9B.   I am trying to warm up by blocking the radiators at the moment.  OAT  between 30 and 40 F. I will have to build shutters to control the engine temp.   Last month the engine was too hot, now it is too cold.  I did modify the air ducts and change the oil rad for the original RX7 rad.   Rino Lacombe Renesis powered Glass Goose