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Message
Thanks, Mark. I suspected the temps there
would be higher than they would be on the way out of the water pump towards the
radiator, as there will be some cooling air hitting that part of the water pump,
so I will take that into account. I figure if the temp sensor in the water
pump housing says 180 degrees, and the one in the housing says 190 degrees, that
will be close enough. (Just as long as it doesen't produce some rediculout
reading such as +275 F). Thanks again for the info. Paul
Conner
----- Original Message -----
Sent: Wednesday, March 23, 2005 11:08
AM
Subject: [FlyRotary] Re: water temp
sender connections
Paul,
Just a comment on
your sensor placement. If you locate it in the hole in the top of the
end housing you will see higher temps than at the engine outlet. This is
because the coolant flows down the hot (plugs) side first, then across and
back through the cold side. Measurements at the end housing should give
you the highest of the two readings. I don’t know how exactly how much
disparity there will be though.
Mark
S.
From:
Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Paul
Sent: Wednesday, March 23, 2005 10:48
AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: water temp
sender connections
Thanks, Ed....I just ordered a
250F/120C VDO sender with an M10x1 thread from egauges.com (Thanks,
Rusty). It will connect to my AV-10 engine monitor. I will be able
to compare it to the reading I get from the sender mounted in the thermostat
housing. which is connected to my ECU which has a panel display which shows
water temp in Celsius. If there is a large disparity, I will have to come up
with an alternative, but if it is within a few degrees, I will call it
successful. Thanks again. Paul Conner
----- Original Message -----
Sent:
Wednesday, March 23, 2005 9:25 AM
Subject:
[FlyRotary] Re: water temp sender
connections
Paul, just a note of caution, if
you are tempted to use the small Mazda coolant sensor location on the
rear housing near the oil pressure sensor, be aware it is very none
linear (perhaps the Mazda coolant gauge is as well {:>)) - if
you are using another sensor then disregard. I thought I was getting
temps of over 250F by monitoring the Mazda Sensor in that location - until I
calibrated it in a pot of water and found out the temps were closer to
210F.
----- Original Message -----
Sent:
Wednesday, March 23, 2005 12:25 AM
Subject:
[FlyRotary] Re: water temp sender
connections
The engine has a stock water
temp sender next to the oil pressure switch. I will try using that to send
temp information to my engine monitor. If that does not work, I will
install another temp sending unit like the one that came stock in the
water pump housing.
Glad to hear
you're getting real numbers now, give or take that silly metric
system :-) I'm not sure what the specs are on the stock sensor,
but you can get aftermarket sensors that fit the rear housing hole.
The thread is M10 x 1.0, and egauges.com has them in at least the VDO
range of
resistance.
Rusty (hoping it
will rain hamburgers for Tracy)
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