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From: "Bill Bradburry" <bbradburry@bellsouth.net>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
References: <list-4069618@logan.com>
In-Reply-To: <list-4069618@logan.com>
Subject: RE: [FlyRotary] Re: water temp probe
Date: Fri, 8 Jan 2010 17:40:13 -0500
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No, that is great, Mark.

BUT I didn't ask the question correctly.  There has been a lot of discussion
on the list about temperature red lines.  Searching thru the Mazda stuff I
have, I found that the normal operating temperature of the Renesis tops out
at 240 degrees..much higher than most or all of us use for our personal red
line.

The jpeg from Jeff caused me to try and find the normal operating
temperature spec for the oil on the Renesis.  I couldn't find one and then
after looking at the drawing again, I don't see a temperature sensor in the
oil system for the car.  The  only sensor I could find was the thermostat in
the cooler that will bypass the cooler when it is cold.  Nothing seems to be
indicated if the oil is hot.  Only if the water is hot.

 

Bill B

 

  _____  

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Mark Steitle
Sent: Friday, January 08, 2010 4:32 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: water temp probe

Bill, 

Since you didn't direct your question to any specific person, I'll tell you
how I set up my engine monitoring system up.  I measure temp and pressure of
both the oil and water.  I also measure water level (float switch in the
purge tank) as well as the return water temp back into the engine (after the
radiator).  So, from this I can tell how well my exchangers are working.  As
an example, I normally see a 40* delta-T across the oil cooler.  If this
drops, my temps go up and I need to land and find out what's not right.  I
also measure coolant pressure.  If pressure is low / high, I need to
investigate.  

 

Is this information overload?  Maybe, but I would rather have too much data
than not enough.

 

Mark S.

 

 

On Fri, Jan 8, 2010 at 1:08 PM, Bill Bradburry <bbradburry@bellsouth.net>
wrote:

Am I correct in my assumption that the engine only has an oil pressure
sensor and not an oil temperature sensor?  Is the only engine temperature
monitored by the coolant temperature sensor??? 

 

Bill B

 

  _____  

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Jeff Whaley
Sent: Friday, January 08, 2010 1:04 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: water temp probe

Ben, you're right in that any one probe does not tell the whole story, but
specific to the Rotary if only one probe is provided/available then the
input oil temperature is most important.  The oil flow diagrams show return
oil from cooler is pumped through e-shaft and sprayed inside the rotors for
their cooling.  Previous posts and literature state that the rotor oil seals
will be damaged by sustained oil temperature >210F.

It is also important to use similar instrumentation to other builders for
direct comparison from one installation to the next . 

I only measure return oil temperature myself; I'd be interested to know what
delta T's (oil) other builders are seeing.

Jeff

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of ben haas
Sent: Friday, January 08, 2010 9:17 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: water temp probe

 

I respectivly disagree on the oil temp sender location. One can have a very
efficient oil cooler that removes alot of heat from the oil. Oil  'in' temps
are important but,,,, You could possibly have a motor making alot of oil
heat and slowing cooking the motor over time and not really know it. Just
like with the water temp probe. One needs to know exactly what is happening
in the motor in real time...  YMMV.

Ben Haas
www.haaspowerair.com <http://www.haaspowerair.com/> 



 

  _____  

To: flyrotary@lancaironline.net
Date: Fri, 8 Jan 2010 06:18:39 -0600
From: msteitle@gmail.com
Subject: [FlyRotary] Re: water temp probe

Kevin, 

 

I think you want to measure the temp of the coolant as it exits the engine.
That way you know how close you are to your upper operating limit.  If you
have a second input, you can measure the temps after the radiator.

 

Oil temps are just the opposite... measure temps after oil has been through
the cooler and is entering the engine.

 

Mark S.  

On Fri, Jan 8, 2010 at 12:52 AM, kevin lane <n3773@comcast.net> wrote:

in looking for a place to mount a water temp probe I realized my radiator
has a drain plug fitting on the bottom of one of the end tanks that could
work.  that portion of the tank has cooled water about to return to the
pump.   does it matter if I monitor the before or after radiator temps?  the
engine sees both, right?    

same question as to the oil temp probe.  the stock oil cooler has a large
fitting [plug?] underneath of one end tank, not sure of its usage.  also
have an extra plug in the oil pan [out the side] which might work [?]  told
that originally had a oil level sender unit in there.   kevin  

 

  _____  

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<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>No, that is great, Mark.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>BUT I didn&#8217;t ask the question correctly.&nbsp; There has =
been a
lot of discussion on the list about temperature red lines.&nbsp; =
Searching thru
the Mazda stuff I have, I found that the normal operating temperature of =
the
Renesis tops out at 240 degrees&#8230;.much higher than most or all of =
us use
for our personal red line.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>The jpeg from Jeff caused me to try and find the normal =
operating
temperature spec for the oil on the Renesis.&nbsp; I couldn&#8217;t find =
one
and then after looking at the drawing again, I don&#8217;t see a =
temperature
sensor in the oil system for the car.&nbsp; The &nbsp;only sensor I =
could find
was the thermostat in the cooler that will bypass the cooler when it is
cold.&nbsp; Nothing seems to be indicated if the oil is hot.&nbsp; Only =
if the
water is hot.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>Bill B<o:p></o:p></span></font></p>

</div>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p>&nbsp;</o:p></span></font></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D3
face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>

<hr size=3D2 width=3D"100%" align=3Dcenter tabIndex=3D-1>

</span></font></div>

<p class=3DMsoNormal style=3D'margin-bottom:12.0pt'><b><font size=3D2 =
face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</spa=
n></font></b><font
size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;font-family:Tahoma'> <st1:PersonName
w:st=3D"on">Rotary motors in aircraft</st1:PersonName>
[mailto:flyrotary@lancaironline.net] <b><span =
style=3D'font-weight:bold'>On
Behalf Of </span></b>Mark Steitle<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Friday, January 08, =
2010
4:32 PM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> <st1:PersonName =
w:st=3D"on">Rotary
 motors in aircraft</st1:PersonName><br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [FlyRotary] Re: =
water
temp probe</span></font><o:p></o:p></p>

<div>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>Bill, <o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>Since you didn't direct your question to any specific person, =
I'll tell
you how I set up my engine monitoring system up.&nbsp; I measure temp =
and
pressure of both the oil and water.&nbsp; I also measure water level =
(float
switch in the purge tank) as well as the&nbsp;return water&nbsp;temp =
back into
the engine (after the radiator).&nbsp; So, from this I can tell how well =
my
exchangers are working.&nbsp; As an example, I normally see a =
40*&nbsp;delta-T
across the oil cooler.&nbsp; If this drops, my temps go up and I need to =
land
and find out what's not right.&nbsp; I also measure&nbsp;coolant
pressure.&nbsp; If pressure&nbsp;is&nbsp;low / high, I need
to&nbsp;investigate.&nbsp; <o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>&nbsp;<o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>Is this information overload?&nbsp; Maybe, but I would rather =
have too
much&nbsp;data than not enough.<o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>&nbsp;<o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>Mark S.<o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>&nbsp;<o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal style=3D'margin-bottom:12.0pt'><font size=3D3
face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt'><o:p>&nbsp;</o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>On Fri, Jan 8, 2010 at 1:08 PM, Bill Bradburry &lt;<a
href=3D"mailto:bbradburry@bellsouth.net">bbradburry@bellsouth.net</a>&gt;=
 wrote:<o:p></o:p></span></font></p>

<div vlink=3Dpurple link=3Dblue>

<div>

<div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D3 face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>Am I =
correct in my
assumption that the engine only has an oil pressure sensor and not an =
oil
temperature sensor?&nbsp; Is the only engine temperature monitored by =
the
coolant temperature sensor???&nbsp;<o:p></o:p></span></font></p>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt'>&nbsp;<o:p></o:p></span></font></p>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D3 face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>Bill =
B<o:p></o:p></span></font></p>

</div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt'>&nbsp;<o:p></o:p></span></font></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D3
face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>

<hr size=3D2 width=3D"100%" align=3Dcenter>

</span></font></div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;margin-bottom:12.0pt'><b><font
size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;font-family:Tahoma;font-weight:
bold'>From:</span></font></b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:
10.0pt;font-family:Tahoma'> <st1:PersonName w:st=3D"on">Rotary motors in =
aircraft</st1:PersonName>
[mailto:<a href=3D"mailto:flyrotary@lancaironline.net" =
target=3D"_blank">flyrotary@lancaironline.net</a>]
<b><span style=3D'font-weight:bold'>On Behalf Of </span></b>Jeff =
Whaley<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Friday, January 08, =
2010
1:04 PM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> <st1:PersonName =
w:st=3D"on">Rotary
 motors in aircraft</st1:PersonName><br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [FlyRotary] Re: =
water
temp probe</span></font><o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D2 color=3D"#1f497d" face=3DCalibri><span =
style=3D'font-size:11.0pt;font-family:
Calibri;color:#1F497D'>Ben, you&#8217;re right in that any one probe =
does not
tell the whole story, but specific to the Rotary if only one probe is
provided/available then the input oil temperature is most =
important.&nbsp; The
oil flow diagrams show return oil from cooler is pumped through e-shaft =
and
sprayed inside the rotors for their cooling.&nbsp; Previous posts and
literature state that the rotor oil seals will be damaged by sustained =
oil
temperature &gt;210F.</span></font><o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D2 color=3D"#1f497d" face=3DCalibri><span =
style=3D'font-size:11.0pt;font-family:
Calibri;color:#1F497D'>It is also important to use similar =
instrumentation to
other builders for direct comparison from one installation to the next =
&#8230; </span></font><o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D2 color=3D"#1f497d" face=3DCalibri><span =
style=3D'font-size:11.0pt;font-family:
Calibri;color:#1F497D'>I only measure return oil temperature myself; =
I&#8217;d
be interested to know what delta T&#8217;s (oil) other builders are =
seeing.</span></font><o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D2 color=3D"#1f497d" face=3DCalibri><span =
style=3D'font-size:11.0pt;font-family:
Calibri;color:#1F497D'>Jeff</span></font><o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt'>&nbsp;<o:p></o:p></span></font></p>

<div>

<div style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt =
0in 0in 0in'>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><font
size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;font-family:Tahoma;font-weight:
bold'>From:</span></font></b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:
10.0pt;font-family:Tahoma'> <st1:PersonName w:st=3D"on">Rotary motors in =
aircraft</st1:PersonName>
[mailto:<a href=3D"mailto:flyrotary@lancaironline.net" =
target=3D"_blank">flyrotary@lancaironline.net</a>]
<b><span style=3D'font-weight:bold'>On Behalf Of </span></b>ben haas<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Friday, January 08, =
2010
9:17 AM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> <st1:PersonName =
w:st=3D"on">Rotary
 motors in aircraft</st1:PersonName><br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [FlyRotary] Re: =
water
temp probe</span></font><o:p></o:p></p>

</div>

</div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt'>&nbsp;<o:p></o:p></span></font></p>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D2 face=3DVerdana><span =
style=3D'font-size:10.0pt;font-family:Verdana'>I
respectivly disagree on the oil temp sender location. One can have a =
very
efficient oil cooler that removes alot of heat from the oil. Oil&nbsp; =
'in'
temps are important but,,,, You could possibly have a motor making alot =
of oil
heat and slowing cooking the motor over time and not really know it. =
Just like
with the water temp probe. One needs to know exactly what is happening =
in the
motor in real time...&nbsp; YMMV.<br>
<br>
</span></font><font size=3D4 face=3DVerdana><span =
style=3D'font-size:13.5pt;
font-family:Verdana'>Ben Haas</span></font><font size=3D2 =
face=3DVerdana><span
style=3D'font-size:10.0pt;font-family:Verdana'><br>
</span></font><font size=3D4 face=3DVerdana><span =
style=3D'font-size:13.5pt;
font-family:Verdana'><a href=3D"http://www.haaspowerair.com/" =
target=3D"_blank">www.haaspowerair.com</a></span></font><font
size=3D2 face=3DVerdana><span =
style=3D'font-size:10.0pt;font-family:Verdana'><br>
<br>
<br>
<br>
&nbsp;</span></font><o:p></o:p></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D2
face=3DVerdana><span style=3D'font-size:10.0pt;font-family:Verdana'>

<hr size=3D2 width=3D"100%" align=3Dcenter>

</span></font></div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;margin-bottom:12.0pt'><font
size=3D2 face=3DVerdana><span =
style=3D'font-size:10.0pt;font-family:Verdana'>To: <a
href=3D"mailto:flyrotary@lancaironline.net" =
target=3D"_blank">flyrotary@lancaironline.net</a><br>
Date: Fri, 8 Jan 2010 06:18:39 -0600<br>
From: <a href=3D"mailto:msteitle@gmail.com" =
target=3D"_blank">msteitle@gmail.com</a><br>
Subject: [FlyRotary] Re: water temp probe</span></font><o:p></o:p></p>

<div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D2 face=3DVerdana><span =
style=3D'font-size:10.0pt;font-family:Verdana'>Kevin, =
</span></font><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt'>&nbsp;<o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D2 face=3DVerdana><span =
style=3D'font-size:10.0pt;font-family:Verdana'>I&nbsp;think
you want to&nbsp;measure the temp of the coolant&nbsp;as it exits the
engine.&nbsp; That way you know how close you are to your upper =
operating
limit.&nbsp; If you have a second input, you can measure the temps after =
the
radiator.</span></font><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt'>&nbsp;<o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D2 face=3DVerdana><span =
style=3D'font-size:10.0pt;font-family:Verdana'>Oil
temps are just the opposite... measure temps after oil has been through =
the
cooler and is entering the engine.</span></font><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt'>&nbsp;<o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;margin-bottom:12.0pt'><font
size=3D2 face=3DVerdana><span =
style=3D'font-size:10.0pt;font-family:Verdana'>Mark
S.&nbsp; </span></font><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D2 face=3DVerdana><span =
style=3D'font-size:10.0pt;font-family:Verdana'>On Fri,
Jan 8, 2010 at 12:52 AM, <st1:PersonName w:st=3D"on">kevin =
lane</st1:PersonName>
&lt;<a href=3D"mailto:n3773@comcast.net" =
target=3D"_blank">n3773@comcast.net</a>&gt;
wrote:</span></font><o:p></o:p></p>

<div>

<div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D2 face=3D"Comic Sans MS"><span =
style=3D'font-size:10.0pt;font-family:"Comic Sans MS"'>in
looking for a place to mount a water temp probe I realized my radiator =
has a
drain plug fitting on the bottom of one of the end tanks that could =
work.&nbsp;
that portion of the tank has cooled water about to return to the
pump.&nbsp;&nbsp; does it matter if I monitor the before or after =
radiator
temps?&nbsp; the engine sees both, right?&nbsp;&nbsp;&nbsp; =
</span></font><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3D2 face=3D"Comic Sans MS"><span =
style=3D'font-size:10.0pt;font-family:"Comic Sans MS"'>same
question as to the oil temp&nbsp;probe.&nbsp;&nbsp;the stock oil cooler =
has a
large fitting [plug?] underneath of one end tank, not sure of its =
usage.&nbsp;
also have an extra plug in the oil pan [out the side] which might work
[?]&nbsp; told that originally had a oil level sender unit in
there.&nbsp;&nbsp; kevin&nbsp; </span></font><o:p></o:p></p>

</div>

</div>

</div>

<p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;margin-bottom:12.0pt'><font
size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt'>&nbsp;<o:p></o:p></span></font></p>

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<hr size=3D2 width=3D"100%" align=3Dcenter>

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