Today's Message Index:
----------------------
1. 07:54 AM - Re: Coolant temperature sensor (Don Walker)
2. 10:56 AM - Re: [Probable Spam] Re: Coolant temperature sensor (Larry McFarland)
3. 11:17 AM - Re: [Probable Spam] Re: Coolant temperature sensor (Don Walker)
4. 04:04 PM - Re: [Probable Spam] Re: Coolant temperature sensor (Larry McFarland)
5. 05:10 PM - Re: [Probable Spam] Re: Coolant temperature sensor (ron hansen)
6. 05:23 PM - Re: [Probable Spam] Re: Coolant temperature sensor (Don Walker)
7. 05:37 PM - Re: [Probable Spam] Re: Coolant temperature sensor (Bryan Martin)
Message 1
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| Subject: | Re: Coolant temperature sensor |
HI guys. I have two things to analyze. I have been flying in 100degrees plu
s and =0Amy block/coolant temp goes up to 208 degrees. (My oil temp NEVER g
oes over 185 =0Abecause I have a heat muff over my muffler for cabin heat).
Now, I followed a =0Asuggestion in this recent discussion...wrapped my pip
es with heat wrap...and my =0AEGT temp went up 120 degrees from 1330 in cru
ise to 1450...but the =0Ahead/watertemp only went down about 4 or 5 degrees
. The EGT goes up even further =0Ain a hard climb with the wrap...1500.=0A
- 1. Is the oil temp being that low a good indication that the rise in
=0Ahead/water temp is not a problem at 1450?=0A- 2. Would you take off th
e wrap to get back to 1330 EGT-and fly with the water =0Aat 208?- Don W
alker-- HDS Stratus, 450 hrs=0A=0AIncidentally, I experimented with air
flow measurements over the radiator back on =0Athe belly. Laminar airflow f
rom belly surface to about six inches-down is very =0Alow. Airflow under
the belly starts flowing better over 6" below the belly. this =0Aindicated
the need for a scoop that extends beyond 6" below the belly in front =0Aof
the radiator. I added a scoop and got improved cooling.=0A=0A=0A=0A________
________________________=0AFrom: Gary Krysztopik <gkrysztopik@satx.rr.com>
=0ATo: stratus-list@matronics.com=0ASent: Sun, July 10, 2011 9:38:38 PM=0AS
ubject: Re: Stratus-List: Coolant temperature sensor=0A=0A--> Stratus-List
message posted by: Gary Krysztopik <gkrysztopik@satx.rr.com>=0A=0AI cut up
some 1/8" NPT "T" fittings and welded them into an aluminum tube that =0Aac
ted as a hose coupler.- I made one for the rad inlet and one for the outl
et to =0Ameasure temp drop.- I used the same gauge and put a switch in.
========================
Message 2
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| Subject: | Re: Coolant temperature sensor |
Neat observation! I may have to unwrap the exhaust pipes to see what
numbers come from that. My coolant temps are never much over 197.
Probably because heat from the raw pipes is contained by the wrap, but I get
1375 to 1425 EGTs. The CHTs/oil temps are always near 210/220
on 85-degree days. On 100-degree days, I'd expect to see coolant temps 205
plus or minus 4 degrees. An oil temp reading from the rear face of the oil
pan at 185 degrees would cause me to suspect the temp is reading the air
around the pan rather than the oil. The oil temp should be within 10
degrees of the CHT. I fly 178/2.78 jets that are as rich as my engine will
run well on. The heat muff did reduce the water/head temps as you say, but
apparently benefits of wrapping the pipes is subject to how much airflow
continues thru from the front of the cowl.
I'd dislike seeing more than 1450 EGT in a climb on a hot day and have
set-point to alert at that temp. Jets seem to be the only thing to affect
EGTs.
Larry McFarland 601HDS at www.macsmachine.com
From: owner-stratus-list-server@matronics.com
[mailto:owner-stratus-list-server@matronics.com] On Behalf Of Don Walker
Sent: Monday, July 11, 2011 9:52 AM
Subject: [Probable Spam] Re: Stratus-List: Coolant temperature sensor
HI guys. I have two things to analyze. I have been flying in 100degrees plus
and my block/coolant temp goes up to 208 degrees. (My oil temp NEVER goes
over 185 because I have a heat muff over my muffler for cabin heat). Now, I
followed a suggestion in this recent discussion...wrapped my pipes with heat
wrap...and my EGT temp went up 120 degrees from 1330 in cruise to 1450...but
the head/watertemp only went down about 4 or 5 degrees. The EGT goes up even
further in a hard climb with the wrap...1500.
1. Is the oil temp being that low a good indication that the rise in
head/water temp is not a problem at 1450?
2. Would you take off the wrap to get back to 1330 EGT and fly with the
water at 208? Don Walker HDS Stratus, 450 hrs
Incidentally, I experimented with airflow measurements over the radiator
back on the belly. Laminar airflow from belly surface to about six inches
down is very low. Airflow under the belly starts flowing better over 6"
below the belly. this indicated the need for a scoop that extends beyond 6"
below the belly in front of the radiator. I added a scoop and got improved
cooling.
_____
From: Gary Krysztopik <gkrysztopik@satx.rr.com>
Sent: Sun, July 10, 2011 9:38:38 PM
Subject: Re: Stratus-List: Coolant temperature sensor
<gkrysztopik@satx.rr.com>
I cut up some 1/8" NPT "T" fittings and welded them into an aluminum tube
that acted as a hose coupler. I made one for the rad inlet and one for the
outlet to measure temp drop. I used the same gauge and put a switch in.
Message 3
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| Subject: | Re: Coolant temperature sensor |
Larry, Are you referring to the stock Stratus CHT plugged into the back of
the =0Aright cylinder head? Tht for me is what is running at 208 and it is
the only =0Aindication of CHT/water that I have. It is the one Rhiner said
to redline at 230 =0Adegrees. I don't have a direct water temp indicator.
=0AAs for oil temp, I am using the stock Stratus setup. Unlike most, I have
an =0Aadjustable door directly in front of the oil pan as well as the muff
for cooling =0Athe oil. My oil ran considerably higher before I added thes
e.=0A=0AMy EGT is set at 1450, too, but I don't know how to interpret this
with the wrap =0Aincreasing the heat by 120 while the other temps are virtu
ally unchanged. I =0Aswitched to smaller jets for summer due to plugs looki
ng a little too sooted up =0Afor my taste. Won't that rich mixture foul you
valves too?=0A=0A=C2-=0A=0A=0A=0A________________________________=0AFrom
: Larry McFarland <larry@macsmachine.com>=0ATo: stratus-list@matronics.com
=0ASent: Mon, July 11, 2011 12:53:28 PM=0ASubject: RE: [Probable Spam] Re:
Stratus-List: Coolant temperature sensor=0A=0A=0ANeat observation!=C2- I
may have to unwrap the exhaust pipes to see what numbers =0Acome from that.
=C2- My coolant temps are never much over 197.=0AProbably because heat fr
om the raw pipes is contained by the wrap, but I get =0A1375 to 1425 EGTs.
=C2- The CHTs/oil temps are always near 210/220=0Aon 85-degree days.=C2
- =C2-On 100-degree days, I=99d expect to see coolant temps 205
=0Aplus or minus 4 degrees.=C2- =C2-An oil temp reading from the rear f
ace of the oil pan =0Aat 185 degrees would cause me to suspect the temp is
reading the air around the =0Apan rather than the oil.=C2- The oil temp s
hould be within 10 degrees of the CHT. =0A=C2-=C2-I fly 178/2.78 jets t
hat are as rich as my engine will run well on. The heat =0Amuff did reduce
the water/head temps as you say, but apparently benefits of =0Awrapping the
pipes is subject to how much airflow continues thru from the front =0Aof t
he cowl. =0A=0AI=99d dislike seeing more than 1450 EGT in a climb on
a hot day and have set-point =0Ato alert at that temp.=C2- Jets seem to b
e the only thing to affect EGTs.=0A=C2-=0ALarry McFarland=C2- 601HDS at
www.macsmachine.com=0A=C2-=0AFrom:owner-stratus-list-server@matronics.co
m =0A[mailto:owner-stratus-list-server@matronics.com] On Behalf Of Don Walk
er=0ASent: Monday, July 11, 2011 9:52 AM=0ATo: stratus-list@matronics.com
=0ASubject: [Probable Spam] Re: Stratus-List: Coolant temperature sensor=0A
=C2-=0AHI guys. I have two things to analyze. I have been flying in 100de
grees plus and =0Amy block/coolant temp goes up to 208 degrees. (My oil tem
p NEVER goes over 185 =0Abecause I have a heat muff over my muffler for cab
in heat). Now, I followed a =0Asuggestion in this recent discussion...wrapp
ed my pipes with heat wrap...and my =0AEGT temp went up 120 degrees from 13
30 in cruise to 1450...but the =0Ahead/watertemp only went down about 4 or
5 degrees. The EGT goes up even further =0Ain a hard climb with the wrap...
1500.=0A=C2- 1. Is the oil temp being that low a good indication that the
rise in =0Ahead/water temp is not a problem at 1450?=0A=C2- 2. Would you
take off the wrap to get back to 1330 EGT=C2-and fly with the water =0Aa
t 208?=C2- Don Walker=C2-=C2- HDS Stratus, 450 hrs=0A=C2-=0AInciden
tally, I experimented with airflow measurements over the radiator back on
=0Athe belly. Laminar airflow from belly surface to about six inches=C2-d
own is very =0Alow. Airflow under the belly starts flowing better over 6" b
elow the belly. this =0Aindicated the need for a scoop that extends beyond
6" below the belly in front =0Aof the radiator. I added a scoop and got imp
roved cooling.=0A=C2-=0A=0A________________________________=0A=0AFrom:Gar
y Krysztopik <gkrysztopik@satx.rr.com>=0ATo: stratus-list@matronics.com=0AS
ent: Sun, July 10, 2011 9:38:38 PM=0ASubject: Re: Stratus-List: Coolant tem
krysztopik@satx.rr.com>=0A=0AI cut up some 1/8" NPT "T" fittings and welded
them into an aluminum tube that =0Aacted as a hose coupler.=C2- I made o
ne for the rad inlet and one for the outlet to =0Ameasure temp drop.=C2-
I used the same gauge and put a switch =0Ahref="http://www.matronics.com/
Navigator?Stratus-List">http://www.matrohttp://forums.matronics.com=0Ahref
="http://www.matronics.com/contribution">http://www.matronics.com/contrib
===== =0A
Message 4
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| Subject: | Re: Coolant temperature sensor |
The stock CHT sensor on the engine, rear pilot=99s side, yes. The
sensor is giving you CHT, but coolant temps need to be taken a short
distance from the engine. Sooting up the plugs is usually because of a
rich idle mixture. On takeoff and cruise, the carbon trace disappear and
reappear as taxi is reduced to idle. It=99s logical that EGTs
are going to be higher with heat kept within the pipes, though I would
not have guessed such a difference.
Wrapping pipes to get a 4 to 5 degree better coolant temp with
120-degree higher EGT readings doesn=99t seem an equitable
argument for wrapping does it!
I=99m going to unwrap my pipes and check flying temps, hopefully
at < or =l to 85-degree ambient. It=99s possible I could then
go to smaller jet sizes as well. I=99ll let you know when
it=99s done.
Larry McFarland 601HDS at www.macsmachine.com
rom: owner-stratus-list-server@matronics.com
[mailto:owner-stratus-list-server@matronics.com] On Behalf Of Don Walker
Sent: Monday, July 11, 2011 1:15 PM
Subject: Re: [Probable Spam] Re: Stratus-List: Coolant temperature
sensor
Larry, Are you referring to the stock Stratus CHT plugged into the back
of the right cylinder head? Tht for me is what is running at 208 and it
is the only indication of CHT/water that I have. It is the one Rhiner
said to redline at 230 degrees. I don't have a direct water temp
indicator.
As for oil temp, I am using the stock Stratus setup. Unlike most, I have
an adjustable door directly in front of the oil pan as well as the muff
for cooling the oil. My oil ran considerably higher before I added
these.
My EGT is set at 1450, too, but I don't know how to interpret this with
the wrap increasing the heat by 120 while the other temps are virtually
unchanged. I switched to smaller jets for summer due to plugs looking a
little too sooted up for my taste. Won't that rich mixture foul you
valves too?
_____
From: Larry McFarland <larry@macsmachine.com>
Sent: Mon, July 11, 2011 12:53:28 PM
Subject: RE: [Probable Spam] Re: Stratus-List: Coolant temperature
sensor
Neat observation! I may have to unwrap the exhaust pipes to see what
numbers come from that. My coolant temps are never much over 197.
Probably because heat from the raw pipes is contained by the wrap, but I
get 1375 to 1425 EGTs. The CHTs/oil temps are always near 210/220
on 85-degree days. On 100-degree days, I=99d expect to see
coolant temps 205 plus or minus 4 degrees. An oil temp reading from
the rear face of the oil pan at 185 degrees would cause me to suspect
the temp is reading the air around the pan rather than the oil. The oil
temp should be within 10 degrees of the CHT. I fly 178/2.78 jets that
are as rich as my engine will run well on. The heat muff did reduce the
water/head temps as you say, but apparently benefits of wrapping the
pipes is subject to how much airflow continues thru from the front of
the cowl.
I=99d dislike seeing more than 1450 EGT in a climb on a hot day
and have set-point to alert at that temp. Jets seem to be the only
thing to affect EGTs.
Larry McFarland 601HDS at www.macsmachine.com
<http://www.macsmachine.com/>
From: owner-stratus-list-server@matronics.com
[mailto:owner-stratus-list-server@matronics.com] On Behalf Of Don Walker
Sent: Monday, July 11, 2011 9:52 AM
Subject: [Probable Spam] Re: Stratus-List: Coolant temperature sensor
HI guys. I have two things to analyze. I have been flying in 100degrees
plus and my block/coolant temp goes up to 208 degrees. (My oil temp
NEVER goes over 185 because I have a heat muff over my muffler for cabin
heat). Now, I followed a suggestion in this recent discussion...wrapped
my pipes with heat wrap...and my EGT temp went up 120 degrees from 1330
in cruise to 1450...but the head/watertemp only went down about 4 or 5
degrees. The EGT goes up even further in a hard climb with the
wrap...1500.
1. Is the oil temp being that low a good indication that the rise in
head/water temp is not a problem at 1450?
2. Would you take off the wrap to get back to 1330 EGT and fly with
the water at 208? Don Walker HDS Stratus, 450 hrs
Incidentally, I experimented with airflow measurements over the radiator
back on the belly. Laminar airflow from belly surface to about six
inches down is very low. Airflow under the belly starts flowing better
over 6" below the belly. this indicated the need for a scoop that
extends beyond 6" below the belly in front of the radiator. I added a
scoop and got improved cooling.
_____
From: Gary Krysztopik <gkrysztopik@satx.rr.com>
Sent: Sun, July 10, 2011 9:38:38 PM
Subject: Re: Stratus-List: Coolant temperature sensor
<gkrysztopik@satx.rr.com>
I cut up some 1/8" NPT "T" fittings and welded them into an aluminum
tube that acted as a hose coupler. I made one for the rad inlet and one
for the outlet to measure temp drop. I used the same gauge and put a
switch
href="http://www.matronics.com/Navigator?Stratus-List">http://www.matro
http://forums.matronics.com <http://www.matrohttp:/forums.matronics.com>
href="http://www.matronics.com/contribution">http://www.matronics.com/c
ontribution ===========
Message 5
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| Subject: | Re: Coolant temperature sensor |
I must have built my plane a little differently in some way as my Stratus
muffler is very close to the nose strut bracket and there's no room to
install a muffler shroud to funnel heat away from my radiator. If I could
get my water temps down 10 to 15 degrees by doing that I think I'd be a
happy camper. I will look and see if there's room for the muffler to move
forward half an inch or so if I had the headers cut and welded 1/2"
shorter. All these ideas are giving me hope. Thanks.
Ron
On Mon, Jul 11, 2011 at 4:01 PM, Larry McFarland <larry@macsmachine.com>wro
te:
> The stock CHT sensor on the engine, rear pilot=92s side, yes. The sensor
is
> giving you CHT, but coolant temps need to be taken a short distance from
the
> engine. Sooting up the plugs is usually because of a rich idle mixture.
On
> takeoff and cruise, the carbon trace disappear and reappear as taxi is
> reduced to idle. It=92s logical that EGTs are going to be higher with h
eat
> kept within the pipes, though I would not have guessed such a difference.
> ****
>
> Wrapping pipes to get a 4 to 5 degree better coolant temp with 120-degre
e
> higher EGT readings doesn=92t seem an equitable argument for wrapping doe
s it!
> ****
>
> I=92m going to unwrap my pipes and check flying temps, hopefully at < or
=l
> to 85-degree ambient. It=92s possible I could then go to smaller jet siz
es as
> well. I=92ll let you know when it=92s done.****
>
> ** **
>
> Larry McFarland 601HDS at www.macsmachine.com****
>
> ** **
>
> *rom:* owner-stratus-list-server@matronics.com [mailto:
> owner-stratus-list-server@matronics.com] *On Behalf Of *Don Walker
> *Sent:* Monday, July 11, 2011 1:15 PM
>
> *To:* stratus-list@matronics.com
> *Subject:* Re: [Probable Spam] Re: Stratus-List: Coolant temperature
> sensor****
>
> ** **
>
> Larry, Are you referring to the stock Stratus CHT plugged into the back o
f
> the right cylinder head? Tht for me is what is running at 208 and it is t
he
> only indication of CHT/water that I have. It is the one Rhiner said to
> redline at 230 degrees. I don't have a direct water temp indicator.****
>
> As for oil temp, I am using the stock Stratus setup. Unlike most, I have
an
> adjustable door directly in front of the oil pan as well as the muff for
> cooling the oil. My oil ran considerably higher before I added these.****
>
> ****
>
> My EGT is set at 1450, too, but I don't know how to interpret this with t
he
> wrap increasing the heat by 120 while the other temps are virtually
> unchanged. I switched to smaller jets for summer due to plugs looking a
> little too sooted up for my taste. Won't that rich mixture foul you valve
s
> too?****
>
>
> ****
>
> ** **
> ------------------------------
>
> *From:* Larry McFarland <larry@macsmachine.com>
> *To:* stratus-list@matronics.com
> *Sent:* Mon, July 11, 2011 12:53:28 PM
> *Subject:* RE: [Probable Spam] Re: Stratus-List: Coolant temperature
> sensor****
>
> Neat observation! I may have to unwrap the exhaust pipes to see what
> numbers come from that. My coolant temps are never much over 197.****
>
> Probably because heat from the raw pipes is contained by the wrap, but I
> get 1375 to 1425 EGTs. The CHTs/oil temps are always near 210/220****
>
> on 85-degree days. On 100-degree days, I=92d expect to see coolant temp
s
> 205 plus or minus 4 degrees. An oil temp reading from the rear face of
the
> oil pan at 185 degrees would cause me to suspect the temp is reading the
air
> around the pan rather than the oil. The oil temp should be within 10
> degrees of the CHT. I fly 178/2.78 jets that are as rich as my engine w
ill
> run well on. The heat muff did reduce the water/head temps as you say, bu
t
> apparently benefits of wrapping the pipes is subject to how much airflow
> continues thru from the front of the cowl. ****
>
> I=92d dislike seeing more than 1450 EGT in a climb on a hot day and have
> set-point to alert at that temp. Jets seem to be the only thing to affec
t
> EGTs.****
>
> ****
>
> Larry McFarland 601HDS at www.macsmachine.com****
>
> ****
>
> *From:* owner-stratus-list-server@matronics.com [mailto:
> owner-stratus-list-server@matronics.com] *On Behalf Of *Don Walker
> *Sent:* Monday, July 11, 2011 9:52 AM
> *To:* stratus-list@matronics.com
> *Subject:* [Probable Spam] Re: Stratus-List: Coolant temperature sensor**
*
> *
>
> ****
>
> HI guys. I have two things to analyze. I have been flying in 100degrees
> plus and my block/coolant temp goes up to 208 degrees. (My oil temp NEVER
> goes over 185 because I have a heat muff over my muffler for cabin heat).
> Now, I followed a suggestion in this recent discussion...wrapped my pipes
> with heat wrap...and my EGT temp went up 120 degrees from 1330 in cruise
to
> 1450...but the head/watertemp only went down about 4 or 5 degrees. The EG
T
> goes up even further in a hard climb with the wrap...1500.****
>
> 1. Is the oil temp being that low a good indication that the rise in
> head/water temp is not a problem at 1450?****
>
> 2. Would you take off the wrap to get back to 1330 EGT and fly with the
> water at 208? Don Walker HDS Stratus, 450 hrs****
>
> ****
>
> Incidentally, I experimented with airflow measurements over the radiator
> back on the belly. Laminar airflow from belly surface to about six
> inches down is very low. Airflow under the belly starts flowing better ov
er
> 6" below the belly. this indicated the need for a scoop that extends beyo
nd
> 6" below the belly in front of the radiator. I added a scoop and got
> improved cooling.****
>
> ****
> ------------------------------
>
> *From:* Gary Krysztopik <gkrysztopik@satx.rr.com>
> *To:* stratus-list@matronics.com
> *Sent:* Sun, July 10, 2011 9:38:38 PM
> *Subject:* Re: Stratus-List: Coolant temperature sensor
>
> gkrysztopik@satx.rr.com>
>
> I cut up some 1/8" NPT "T" fittings and welded them into an aluminum tube
> that acted as a hose coupler. I made one for the rad inlet and one for t
he
> outlet to measure temp drop. I used the same gauge and put a switch href
="
> http://www.matronics.com/Navigator?Stratus-List">
> http://www.matrohttp://forums.matronics.com<http://www.matrohttp:/forums.
matronics.com>href="
> http://www.matronics.com/contribution">
> http://www.matronics.com/contribution =========== *
***
>
> * *
>
> * *
>
> **
>
> **
>
> **
>
> **
>
> **
>
> *http://www.matronics.com/Navigator?Stratus-List*
>
> **
>
> **
>
> *http://forums.matronics.com*
>
> **
>
> **
>
> **
>
> **
>
> *http://www.matronics.com/contribution*
>
> **
>
> * *
>
> *
>
===========
===========
===========
===========
> *
>
>
Message 6
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| Subject: | Re: Coolant temperature sensor |
Yes, Larry, I am suspecting you will be able to use smaller jets. The temp
=0Adifference was clear and accurately recorded on mine on a trial Saturday
before =0Awrapping and this morning after the wrap. I will be looking forw
ard to hearing =0Aof your results. Regarding my water, with a CHT of 208 an
d oil temp reading 185, =0Athen I suspect my water should be less than 200.
..if it is in line with yours. =0AAre you using the stock Stratus oil temp
on the back of the oil pan? =0A=0A-- Another thing I use is an adjustab
le flow heater core in the right side of =0Athe nose, close off the drive b
elt. It helps in Texas heat for sure, but I have =0Ato close it off in the
winter.- don=0A=0A=0A=0A=0A________________________________=0AFrom: Larry
McFarland <larry@macsmachine.com>=0ATo: stratus-list@matronics.com=0ASent:
Mon, July 11, 2011 6:01:40 PM=0ASubject: RE: [Probable Spam] Re: Stratus-L
ist: Coolant temperature sensor
Message 7
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| Subject: | Re: Coolant temperature sensor |
I actually hammered an indentation on the rear of my muffler to get a little more
clearance between it and the nose strut. Wrapping the muffler has not had much
effect on my water temps but it has had a big effect on my oil temps, probably
due to the close proximity of the muffler and the oil pan (and the oil temp
sensor).
On Jul 11, 2011, at 8:08 PM, ron hansen wrote:
> I must have built my plane a little differently in some way as my Stratus muffler
is very close to the nose strut bracket and there's no room to install a
muffler shroud to funnel heat away from my radiator. If I could get my water
temps down 10 to 15 degrees by doing that I think I'd be a happy camper. I will
look and see if there's room for the muffler to move forward half an inch or
so if I had the headers cut and welded 1/2" shorter. All these ideas are giving
me hope. Thanks.
>
> Ron
--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
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