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barrynorman(at)comcast.ne
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 Posted: Tue Feb 05, 2013 6:49 pm Post subject: Oil Cooling |
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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
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pilot623(at)gmail.com
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| Posted: Tue Feb 05, 2013 7:39 pm Post subject: Oil Cooling |
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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
[quote] From: owner-pulsar-list-server(at)matronics.com [mailto:owner-pulsar-list-server(at)matronics.com] On Behalf Of barrynorman(at)comcast.net
Sent: Tuesday, February 05, 2013 8:49 PM
To: pulsar-list
Subject: 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
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