---------------------------------------------------------- Pulsar-List Digest Archive --- Total Messages Posted Tue 02/05/13: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:49 PM - Oil Cooling (barrynorman@comcast.net) 2. 07:39 PM - Re: Oil Cooling (pilot623) ________________________________ Message 1 _____________________________________ Time: 06:49:54 PM PST US From: barrynorman@comcast.net Subject: Pulsar-List: Oil Cooling I have flown my Pulsar III with dual coolers and a thermostat on it for years and recently had problems with the thermostat not working right and oil temps only getting up to 145 F in the winter months. In addition to that I noticed the oil pressure would drop after takeoff momentarily when the thermostat would open. This weekend, I took the thermostat off and bypassed one of the coolers and the oil stayed around 220 F in cruise. That's fine for these winter months but not good for warmer temps. My question is this, I have the cooler behind the opening on the pilot side and think that the dynamic pressure is much higher on the other side. Has anyone run a single cooler on the series II or III with success? Have they noticed that the dynamic pressure is higher on the passenger side? I seem to remember Ricky T. saying something along those lines years ago. Barry ________________________________ Message 2 _____________________________________ Time: 07:39:27 PM PST US From: "pilot623" Subject: RE: Pulsar-List: Oil Cooling Barry, My Series 2(.75) has flown with one oil cooler on the pilot side and no thermostat since day one. I suspect there are higher dynamic pressures on the copilot side but have never attempted to measure the difference. My lone CHT measurement comes from a Rotax-type probe screwed into the head on the copilot aft cylinder. Jim N623JF _____ From: owner-pulsar-list-server@matronics.com [mailto:owner-pulsar-list-server@matronics.com] On Behalf Of barrynorman@comcast.net Sent: Tuesday, February 05, 2013 8:49 PM Subject: Pulsar-List: Oil Cooling I have flown my Pulsar III with dual coolers and a thermostat on it for years and recently had problems with the thermostat not working right and oil temps only getting up to 145 F in the winter months. In addition to that I noticed the oil pressure would drop after takeoff momentarily when the thermostat would open. This weekend, I took the thermostat off and bypassed one of the coolers and the oil stayed around 220 F in cruise. That's fine for these winter months but not good for warmer temps. My question is this, I have the cooler behind the opening on the pilot side and think that the dynamic pressure is much higher on the other side. Has anyone run a single cooler on the series II or III with success? Have they noticed that the dynamic pressure is higher on the passenger side? I seem to remember Ricky T. saying something along those lines years ago. Barry ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message pulsar-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Pulsar-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/pulsar-list Browse Digests http://www.matronics.com/digest/pulsar-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.