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Oil Temperatures

 
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bernard.wilder2(at)gmail.
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PostPosted: Mon May 02, 2011 10:27 am    Post subject: Oil Temperatures Reply with quote
Dennis,
 
I installed an auto oil thermostate designed to be used with automatic tramissions. It opens at 180 degrees.
 
I start take-ofdf roll when oil gets to 100. It gets to 180 before I get to 600-700 feet and stays there.
 
It is about as big as my fist and installs easily. I got it from Lockwood ten years ago.
 
Bernie Wilder
On Mon, May 2, 2011 at 1:34 PM, Dennis Adams <ghf4986(at)gmail.com (ghf4986(at)gmail.com)> wrote:
[quote]All,

I have posted notes several times concerning oil temps on my XP.  When building I installed an oil thermostat per the Rotax recommendation (from Earls, this is a race car unit and looked better than the Rotax unit).  It was difficult to install on an XP due to the lack of space.

Well it worked great in the winter, but oil temps were way too high in the summer as I could not climb in order to keep them below 284 degrees F.  I did have some grounding problems with the Dynon  and the temperature sensor but I now know that the Dynon is reading correct temps.

I flew this morning with the oil thermostat removed and now my oil temps are way too low (as were the cylinder  head temps for the leading two cylinders)  The outside air temperatures were -8 degrees C.  On climb out the oil was about 132 degrees F max ( and I climbed hard) but then in level flight they dropped down to about 100 degrees F and less on decent.  I need to get around 190 and climb out or at least sometime during the flight.

I am going to experiment with some metalized tape over the oil cooler.  I can probably do this as long as the cylinder head temps are also low.

Are other XP people having similar problems?  What did you do to solve.  By the way this engine has high compression pistons and I expected it to tend to run warmer.

Dennis Adams
N375CM 16 hours on the plane.

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sonja.englert(at)juno.com
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PostPosted: Mon May 02, 2011 11:31 am    Post subject: Oil Temperatures Reply with quote
It is really simple and effective to cover part of the oil radiator with tape to keep the temperatures up and remove it when it gets warmer. That is really all you need.

Sonja

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mosescpa(at)dcdi.net
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PostPosted: Mon May 02, 2011 11:42 am    Post subject: Oil Temperatures Reply with quote
Dennis,

The first winter, I covered about 2/3 of the oil radiator with duct tape. It worked, but no adjustment. Next, I had built a slide affair that could block between 1/3 - 2/3 of the radiator. It worked ok but I removed it in the summer and haven't put it back. I just run with the lower temps when it is cool.

Austin Moses
N460GM
[quote] ---

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ccoulter(at)wavecable.com
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PostPosted: Mon May 02, 2011 3:26 pm    Post subject: Oil Temperatures Reply with quote
On Mon, 2 May 2011 11:34:51 -0600
Dennis Adams <ghf4986(at)gmail.com> wrote:
Quote:
All,

I have posted notes several times concerning oil temps
on my XP. When
building I installed an oil thermostat per the Rotax
recommendation (from
Earls, this is a race car unit and looked better than
the Rotax unit). It
was difficult to install on an XP due to the lack of
space.

Well it worked great in the winter, but oil temps were
way too high in the
summer as I could not climb in order to keep them below
284 degrees F. I
did have some grounding problems with the Dynon and the
temperature sensor
but I now know that the Dynon is reading correct temps.

I flew this morning with the oil thermostat removed and
now my oil temps are
way too low (as were the cylinder head temps for the
leading two
cylinders) The outside air temperatures were -8 degrees
C. On climb out
the oil was about 132 degrees F max ( and I climbed
hard) but then in level
flight they dropped down to about 100 degrees F and less
on decent. I need
to get around 190 and climb out or at least sometime
during the flight.

I am going to experiment with some metalized tape over
the oil cooler. I
can probably do this as long as the cylinder head temps
are also low.

Are other XP people having similar problems? What did
you do to solve. By
the way this engine has high compression pistons and I
expected it to tend
to run warmer.

Dennis Adams
N375CM 16 hours on the plane.

I have the same problem of temps too cold. I built a
sliding baffel to close of the cooler, it helps but I
still run cold.

Clarke

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