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
To: flyrotary@lancaironline.net
Date: Fri, 8 Jan 2010 06:18:39 -0600
From: msteitle@gmail.com
Subject: [FlyRotary] Re: water temp probe
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.
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
Hotmail: Powerful Free email with security by Microsoft. Get it
now.
This message, and the documents attached hereto,
is intended only for the addressee and may contain privileged or confidential
information. Any unauthorized disclosure is strictly prohibited. If you have
received this message in error, please notify us immediately so that we may
correct our internal records. Please then delete the original message. Thank
you.