Today's Message Index:
----------------------
1. 12:59 PM - EGT-CHT Imbalance (Larry McFarland)
2. 01:06 PM - Re: EGT-CHT Imbalance (Hinde, Frank George (Corvallis))
3. 01:55 PM - Re: EGT-CHT Imbalance (Weston, Jim)
4. 01:58 PM - Re: EGT-CHT Imbalance (Hinde, Frank George (Corvallis))
5. 04:07 PM - Stratus EA-81 Cooling (Andrew SanClemente)
6. 04:24 PM - Re: Stratus EA-81 Cooling (Hinde, Frank George (Corvallis))
7. 05:15 PM - Re: Stratus EA-81 Cooling (Andrew SanClemente)
8. 05:35 PM - Re: Stratus EA-81 Cooling (Larry McFarland)
9. 05:44 PM - Re: EGT-CHT Imbalance (Larry McFarland)
Message 1
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| Subject: | EGT-CHT Imbalance |
--> Stratus-List message posted by: "Larry McFarland" <larrymc@qconline.com>
Hi guys,
The steady 2 - 3 hour flights every day have brought
my plane up to the 39-hours and I've a question that
someone surely has tripped over and resolved or not.
My right EGT reads 60 to 75-degrees hotter than the left
which is not a concern until take off when the right one
sees 1450 to 1460 for a short time. When all settles down,
to cruise, the left is 1320 and the right is 1380. This has been
re-checked by switching leads. I've probed for leaks in the intakes
and this is not likely either.
Odd too, the right CHT is consistently cooler than the left by 10 degrees.
Perhaps there's no relationship, and the muffler design with the exhaust
outlet pipe being more on the left side has something to do with this.
I'm at the point of changing the right jet from a 170 to a 172 to get
a cooler right EGT that stays in the 1300s. Bing says this shouldn't
cause any difficulty, but still the problem begs the question.
I've had the plane up to 125 at 5100, but the right EGT keeps me from
being there for any protracted length of time, not that it's important for
my kind of flying, but I think the EGT should be kept within limits wherever
the RPS are in the Stratus engine. Hope I'm not wrong about this.
Any recommendations out there?
Larry McFarland
Message 2
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| Subject: | EGT-CHT Imbalance |
--> Stratus-List message posted by: "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com>
My motor is hotter on the righ bank too (EGT). I wonder if there is a
coolant imbalance within the block? I regularly cruise at
1450F....Really have not had enough time on the heads to discover if
this is an issue or not. Ron at Ram Performance did not think so....
Frank
-----Original Message-----
From: owner-stratus-list-server@matronics.com
[mailto:owner-stratus-list-server@matronics.com] On Behalf Of Larry
McFarland
Subject: Stratus-List: EGT-CHT Imbalance
--> Stratus-List message posted by: "Larry McFarland"
--> <larrymc@qconline.com>
Hi guys,
The steady 2 - 3 hour flights every day have brought
my plane up to the 39-hours and I've a question that
someone surely has tripped over and resolved or not.
My right EGT reads 60 to 75-degrees hotter than the left
which is not a concern until take off when the right one
sees 1450 to 1460 for a short time. When all settles down,
to cruise, the left is 1320 and the right is 1380. This has been
re-checked by switching leads. I've probed for leaks in the intakes and
this is not likely either. Odd too, the right CHT is consistently cooler
than the left by 10 degrees.
Perhaps there's no relationship, and the muffler design with the exhaust
outlet pipe being more on the left side has something to do with this.
I'm at the point of changing the right jet from a 170 to a 172 to get a
cooler right EGT that stays in the 1300s. Bing says this shouldn't cause
any difficulty, but still the problem begs the question.
I've had the plane up to 125 at 5100, but the right EGT keeps me from
being there for any protracted length of time, not that it's important
for my kind of flying, but I think the EGT should be kept within limits
wherever the RPS are in the Stratus engine. Hope I'm not wrong about
this.
Any recommendations out there?
Larry McFarland
==
direct advertising on the Matronics Forums.
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Message 3
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| Subject: | EGT-CHT Imbalance |
--> Stratus-List message posted by: "Weston, Jim" <Jim.Weston@delta.com>
If your still feeding the crankcase breather back into the left carb
intake, this could cause the imbalance. I moved my breather to exhaust
separately below the firewall, some time ago. Unfortunately, I don't
have EGT gauges to tell if mine are balanced or not. Just a thought.
Jim Weston
Concord, Ga.
-----Original Message-----
From: owner-stratus-list-server@matronics.com
[mailto:owner-stratus-list-server@matronics.com] On Behalf Of Hinde,
Frank George (Corvallis)
Subject: RE: Stratus-List: EGT-CHT Imbalance
--> Stratus-List message posted by: "Hinde, Frank George (Corvallis)"
--> <frank.hinde@hp.com>
My motor is hotter on the righ bank too (EGT). I wonder if there is a
coolant imbalance within the block? I regularly cruise at
1450F....Really have not had enough time on the heads to discover if
this is an issue or not. Ron at Ram Performance did not think so....
Frank
-----Original Message-----
From: owner-stratus-list-server@matronics.com
[mailto:owner-stratus-list-server@matronics.com] On Behalf Of Larry
McFarland
Subject: Stratus-List: EGT-CHT Imbalance
--> Stratus-List message posted by: "Larry McFarland"
--> <larrymc@qconline.com>
Hi guys,
The steady 2 - 3 hour flights every day have brought my plane up to the
39-hours and I've a question that someone surely has tripped over and
resolved or not.
My right EGT reads 60 to 75-degrees hotter than the left which is not a
concern until take off when the right one sees 1450 to 1460 for a short
time. When all settles down, to cruise, the left is 1320 and the right
is 1380. This has been re-checked by switching leads. I've probed for
leaks in the intakes and this is not likely either. Odd too, the right
CHT is consistently cooler than the left by 10 degrees.
Perhaps there's no relationship, and the muffler design with the exhaust
outlet pipe being more on the left side has something to do with this.
I'm at the point of changing the right jet from a 170 to a 172 to get a
cooler right EGT that stays in the 1300s. Bing says this shouldn't cause
any difficulty, but still the problem begs the question.
I've had the plane up to 125 at 5100, but the right EGT keeps me from
being there for any protracted length of time, not that it's important
for my kind of flying, but I think the EGT should be kept within limits
wherever the RPS are in the Stratus engine. Hope I'm not wrong about
this.
Any recommendations out there?
Larry McFarland
==
direct advertising on the Matronics Forums.
==
==
==
==
direct advertising on the Matronics Forums.
==
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==
Message 4
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| Subject: | EGT-CHT Imbalance |
--> Stratus-List message posted by: "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com>
Good thought....Mine id dumped out the bottom of the cowl and I still
get the imbalance.
Frank
-----Original Message-----
From: owner-stratus-list-server@matronics.com
[mailto:owner-stratus-list-server@matronics.com] On Behalf Of Weston,
Jim
Subject: RE: Stratus-List: EGT-CHT Imbalance
--> Stratus-List message posted by: "Weston, Jim" <Jim.Weston@delta.com>
If your still feeding the crankcase breather back into the left carb
intake, this could cause the imbalance. I moved my breather to exhaust
separately below the firewall, some time ago. Unfortunately, I don't
have EGT gauges to tell if mine are balanced or not. Just a thought.
Jim Weston
Concord, Ga.
-----Original Message-----
From: owner-stratus-list-server@matronics.com
[mailto:owner-stratus-list-server@matronics.com] On Behalf Of Hinde,
Frank George (Corvallis)
Subject: RE: Stratus-List: EGT-CHT Imbalance
--> Stratus-List message posted by: "Hinde, Frank George (Corvallis)"
--> <frank.hinde@hp.com>
My motor is hotter on the righ bank too (EGT). I wonder if there is a
coolant imbalance within the block? I regularly cruise at
1450F....Really have not had enough time on the heads to discover if
this is an issue or not. Ron at Ram Performance did not think so....
Frank
-----Original Message-----
From: owner-stratus-list-server@matronics.com
[mailto:owner-stratus-list-server@matronics.com] On Behalf Of Larry
McFarland
Subject: Stratus-List: EGT-CHT Imbalance
--> Stratus-List message posted by: "Larry McFarland"
--> <larrymc@qconline.com>
Hi guys,
The steady 2 - 3 hour flights every day have brought my plane up to the
39-hours and I've a question that someone surely has tripped over and
resolved or not.
My right EGT reads 60 to 75-degrees hotter than the left which is not a
concern until take off when the right one sees 1450 to 1460 for a short
time. When all settles down, to cruise, the left is 1320 and the right
is 1380. This has been re-checked by switching leads. I've probed for
leaks in the intakes and this is not likely either. Odd too, the right
CHT is consistently cooler than the left by 10 degrees.
Perhaps there's no relationship, and the muffler design with the exhaust
outlet pipe being more on the left side has something to do with this.
I'm at the point of changing the right jet from a 170 to a 172 to get a
cooler right EGT that stays in the 1300s. Bing says this shouldn't cause
any difficulty, but still the problem begs the question.
I've had the plane up to 125 at 5100, but the right EGT keeps me from
being there for any protracted length of time, not that it's important
for my kind of flying, but I think the EGT should be kept within limits
wherever the RPS are in the Stratus engine. Hope I'm not wrong about
this.
Any recommendations out there?
Larry McFarland
==
direct advertising on the Matronics Forums.
==
==
==
==
direct advertising on the Matronics Forums.
==
==
==
==
direct advertising on the Matronics Forums.
==
==
==
Message 5
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| Subject: | Stratus EA-81 Cooling |
--> Stratus-List message posted by: Andrew SanClemente <ansancle@townisp.com>
I am getting ready for my inspection (601 HDS - Stratus EA-81 RAM
Heads) and did some taxi testing today. The outside air temperature
was about 75 and I was taxiing back and forth down an out of the way
taxi-way. My water temps never went over 160 and my CHT never went
over 180-190. I need to test my oil temp sensor as it never left the
peg and the lowest reading on the gauge is 120. I find it hard to
believe my oil temps didn't hit at least that.
I have the standard cowl with the side blisters and the pan on the
bottom. I did wrap the exhaust with the exhaust-wrap material from
ACS and ensured the rear of my radiator is completely sealed to force
the airflow through the radiator.
I was not able to do any static testing with the RPM over 3000 since
the brakes won't hold over about 3500 rpm.
Since these temps are good with minimal airflow, is it safe to assume
that when I have full airflow the temps will stay down even though
the engine is working much harder?
Thanks
Andy
Getting Very Close to flying
I am getting ready for my inspection (601 HDS - Stratus EA-81 RAM Heads) and did
some taxi testing today. The outside air temperature was about 75 and I was
taxiing back and forth down an out of the way taxi-way. My water temps never
went over 160 and my CHT never went over 180-190. I need to test my oil temp sensor
as it never left the peg and the lowest reading on the gauge is 120. I find
it hard to believe my oil temps didn't hit at least that.
I have the standard cowl with the side blisters and the pan on the bottom. I
did wrap the exhaust with the exhaust-wrap material from ACS and ensured the rear
of my radiator is completely sealed to force the airflow through the radiator.
I was not able to do any static testing with the RPM over 3000 since the brakes
won't hold over about 3500 rpm.
Since these temps are good with minimal airflow, is it safe to assume that when
I have full airflow the temps will stay down even though the engine is working
much harder?
Thanks
Andy
Getting Very Close to flying
Message 6
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| Subject: | Stratus EA-81 Cooling |
--> Stratus-List message posted by: "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com>
Your looking good Andrew,
I am not at all surprised your oil temp did not move, mine wouldn't
either. Until you get some sustained load on that motor it will not warm
up oil wise.
Your water temps seem a little low. The thermostat should open right
around 180F so it should be making at least that.
Try warming it up without taxiing and see if it will get there.
Other than that your good to go!
Frank
HDS Stratus, Ram heads 344 hours
Do not archive
-----Original Message-----
From: owner-stratus-list-server@matronics.com
[mailto:owner-stratus-list-server@matronics.com] On Behalf Of Andrew
SanClemente
Subject: Stratus-List: Stratus EA-81 Cooling
--> Stratus-List message posted by: Andrew SanClemente
--> <ansancle@townisp.com>
I am getting ready for my inspection (601 HDS - Stratus EA-81 RAM
Heads) and did some taxi testing today. The outside air temperature
was about 75 and I was taxiing back and forth down an out of the way
taxi-way. My water temps never went over 160 and my CHT never went
over 180-190. I need to test my oil temp sensor as it never left the
peg and the lowest reading on the gauge is 120. I find it hard to
believe my oil temps didn't hit at least that.
I have the standard cowl with the side blisters and the pan on the
bottom. I did wrap the exhaust with the exhaust-wrap material from
ACS and ensured the rear of my radiator is completely sealed to force
the airflow through the radiator.
I was not able to do any static testing with the RPM over 3000 since
the brakes won't hold over about 3500 rpm.
Since these temps are good with minimal airflow, is it safe to assume
that when I have full airflow the temps will stay down even though
the engine is working much harder?
Thanks
Andy
Getting Very Close to flying
Message 7
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| Subject: | Stratus EA-81 Cooling |
--> Stratus-List message posted by: Andrew SanClemente <ansancle@townisp.com>
Frank,
thanks for the info, everything is looking good except for the
paperwork! What a pain in the *#!!
I was going to pull the oil temp sensor, but I guess Ill wait now
until its under load for a while.
The other question I had is with regards to the fuel pressure. With
one fuel pump Im getting about 3.5-4psi and with two (engine and
wing) about 9psi. According to the stratus manual, 4-5.8 is the
allowable range. Should I run with one pump during normal flight and
two during takeoff/landing? The one pump is on the low end of the
range.
- Andy
DO NOT ARCHIVE
On Thu, 30 Sep 2004 16:24:02 -0700, Hinde, Frank George (Corvallis)
wrote:
>--> Stratus-List message posted by: "Hinde, Frank George
>(Corvallis)" <frank.hinde@hp.com>
>
>Your looking good Andrew,
>
>I am not at all surprised your oil temp did not move, mine wouldn't
>either. Until you get some sustained load on that motor it will not
>warm
>up oil wise.
>
>Your water temps seem a little low. The thermostat should open right
>around 180F so it should be making at least that.
>
>Try warming it up without taxiing and see if it will get there.
>
>Other than that your good to go!
>
>Frank
>
>HDS Stratus, Ram heads 344 hours
>
>Do not archive
>
>-----Original Message-----
>From: owner-stratus-list-server@matronics.com
>[mailto:owner-stratus-list-server@matronics.com] On Behalf Of Andrew
>SanClemente
>To: Stratus
>Subject: Stratus-List: Stratus EA-81 Cooling
>
>
>--> Stratus-List message posted by: Andrew SanClemente
>--> <ansancle@townisp.com>
>
>I am getting ready for my inspection (601 HDS - Stratus EA-81 RAM
>Heads) and did some taxi testing today. The outside air temperature
>was about 75 and I was taxiing back and forth down an out of the way
>taxi-way. My water temps never went over 160 and my CHT never went
>over 180-190. I need to test my oil temp sensor as it never left
>the
>peg and the lowest reading on the gauge is 120. I find it hard to
>believe my oil temps didn't hit at least that.
>
>I have the standard cowl with the side blisters and the pan on the
>bottom. I did wrap the exhaust with the exhaust-wrap material from
>ACS and ensured the rear of my radiator is completely sealed to
>force
>the airflow through the radiator.
>I was not able to do any static testing with the RPM over 3000 since
>the brakes won't hold over about 3500 rpm.
>
>Since these temps are good with minimal airflow, is it safe to
>assume
>that when I have full airflow the temps will stay down even though
>the engine is working much harder?
>
>Thanks
>Andy
>
>Getting Very Close to flying
>
>
>_-
>
>
>_-
>
>
>_-
>
>
>_-
>
>
Frank,
thanks for the info, everything is looking good except for the paperwork! What
a pain in the *#!!
I was going to pull the oil temp sensor, but I guess Ill wait now until its under
load for a while.
The other question I had is with regards to the fuel pressure. With one fuel pump
Im getting about 3.5-4psi and with two (engine and wing) about 9psi. According
to the stratus manual, 4-5.8 is the allowable range. Should I run with one
pump during normal flight and two during takeoff/landing? The one pump is on
the low end of the range.
- Andy
DO NOT ARCHIVE
On Thu, 30 Sep 2004 16:24:02 -0700, Hinde, Frank George (Corvallis) wrote:
--=A0Stratus-List message posted by: Hinde, Frank George
(Corvallis) frank.hinde@hp.com
Your looking good Andrew,
I am not at all surprised your oil temp did not move, mine wouldn't
either. Until you get some sustained load on that motor it will not
warm
up oil wise.
Your water temps seem a little low. The thermostat should open right
around 180F so it should be making at least that.
Try warming it up without taxiing and see if it will get there.
Other than that your good to go!
Frank
HDS Stratus, Ram heads 344 hours
Do not archive
-----Original Message-----
From: owner-stratus-list-server@matronics.com
[mailto:owner-stratus-list-server@matronics.com] On Behalf Of Andrew
SanClemente
To: Stratus
Subject: Stratus-List: Stratus EA-81 Cooling
--=A0Stratus-List message posted by: Andrew SanClemente
--=A0ansancle@townisp.com
I am getting ready for my inspection (601 HDS - Stratus EA-81 RAM
Heads) and did some taxi testing today. The outside air temperature
was about 75 and I was taxiing back and forth down an out of the way
taxi-way. My water temps never went over 160 and my CHT never went
over 180-190.I need to test my oil temp sensor as it never left
the
peg and the lowest reading on the gauge is 120. I find it hard to
believe my oil temps didn't hit at least that.
I have the standard cowl with the side blisters and the pan on the
bottom. I did wrap the exhaust with the exhaust-wrap material from
ACS and ensured the rear of my radiator is completely sealed to
force
the airflow through the radiator.
I was not able to do any static testing with the RPM over 3000 since
the brakes won't hold over about 3500 rpm.
Since these temps are good with minimal airflow, is it safe to
assume
that when I have full airflow the temps will stay down even though
the engine is working much harder?
Thanks
Andy
Getting Very Close to flying
_-
_-
_-
_-
Message 8
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| Subject: | Re: Stratus EA-81 Cooling |
--> Stratus-List message posted by: "Larry McFarland" <larrymc@qconline.com>
Andy,
If you want to static test, buy about 40-ft of 3/8" nylon rope from
Farm and Fleet and tie each end off the two rear gear legs with one piece
that can be looped
over a trailer hitch or substantial post. Then tie the tail down to the
rope.
It takes at least 10-minutes running at 1500 or less to get the oil to rise
to the 120 mark on my Stratus.
Larry McFarland
Do not archive
----- Original Message -----
From: "Andrew SanClemente" <ansancle@townisp.com>
Subject: Stratus-List: Stratus EA-81 Cooling
> --> Stratus-List message posted by: Andrew SanClemente
> <ansancle@townisp.com>
>
> I am getting ready for my inspection (601 HDS - Stratus EA-81 RAM
> Heads) and did some taxi testing today. The outside air temperature
> was about 75 and I was taxiing back and forth down an out of the way
> taxi-way. My water temps never went over 160 and my CHT never went
> over 180-190. I need to test my oil temp sensor as it never left the
> peg and the lowest reading on the gauge is 120. I find it hard to
> believe my oil temps didn't hit at least that.
>
> I have the standard cowl with the side blisters and the pan on the
> bottom. I did wrap the exhaust with the exhaust-wrap material from
> ACS and ensured the rear of my radiator is completely sealed to force
> the airflow through the radiator.
> I was not able to do any static testing with the RPM over 3000 since
> the brakes won't hold over about 3500 rpm.
>
> Since these temps are good with minimal airflow, is it safe to assume
> that when I have full airflow the temps will stay down even though
> the engine is working much harder?
>
> Thanks
> Andy
>
> Getting Very Close to flying
>
>
> I am getting ready for my inspection (601 HDS - Stratus EA-81 RAM Heads)
> and did some taxi testing today. The outside air temperature was about 75
> and I was taxiing back and forth down an out of the way taxi-way. My water
> temps never went over 160 and my CHT never went over 180-190. I need to
> test my oil temp sensor as it never left the peg and the lowest reading on
> the gauge is 120. I find it hard to believe my oil temps didn't hit at
> least that.
>
> I have the standard cowl with the side blisters and the pan on the
> bottom. I did wrap the exhaust with the exhaust-wrap material from ACS and
> ensured the rear of my radiator is completely sealed to force the airflow
> through the radiator.
> I was not able to do any static testing with the RPM over 3000 since the
> brakes won't hold over about 3500 rpm.
>
> Since these temps are good with minimal airflow, is it safe to assume
> that when I have full airflow the temps will stay down even though the
> engine is working much harder?
>
> Thanks
> Andy
>
> Getting Very Close to flying
>
>
>
Message 9
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| Subject: | Re: EGT-CHT Imbalance |
--> Stratus-List message posted by: "Larry McFarland" <larrymc@qconline.com>
I think if you had the breather intake downstream of the carbs you'd expect
to have an imbalance, but not upstream. That air should be neutral and
common draw.
Larry
----- Original Message -----
From: "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com>
Subject: RE: Stratus-List: EGT-CHT Imbalance
> --> Stratus-List message posted by: "Hinde, Frank George (Corvallis)"
> <frank.hinde@hp.com>
>
> Good thought....Mine id dumped out the bottom of the cowl and I still
> get the imbalance.
>
> Frank
>
> -----Original Message-----
> From: owner-stratus-list-server@matronics.com
> [mailto:owner-stratus-list-server@matronics.com] On Behalf Of Weston,
> Jim
> To: stratus-list@matronics.com
> Subject: RE: Stratus-List: EGT-CHT Imbalance
>
>
> --> Stratus-List message posted by: "Weston, Jim" <Jim.Weston@delta.com>
>
> If your still feeding the crankcase breather back into the left carb
> intake, this could cause the imbalance. I moved my breather to exhaust
> separately below the firewall, some time ago. Unfortunately, I don't
> have EGT gauges to tell if mine are balanced or not. Just a thought.
>
> Jim Weston
> Concord, Ga.
>
> -----Original Message-----
> From: owner-stratus-list-server@matronics.com
> [mailto:owner-stratus-list-server@matronics.com] On Behalf Of Hinde,
> Frank George (Corvallis)
> To: stratus-list@matronics.com
> Subject: RE: Stratus-List: EGT-CHT Imbalance
>
> --> Stratus-List message posted by: "Hinde, Frank George (Corvallis)"
> --> <frank.hinde@hp.com>
>
> My motor is hotter on the righ bank too (EGT). I wonder if there is a
> coolant imbalance within the block? I regularly cruise at
> 1450F....Really have not had enough time on the heads to discover if
> this is an issue or not. Ron at Ram Performance did not think so....
>
> Frank
>
> -----Original Message-----
> From: owner-stratus-list-server@matronics.com
> [mailto:owner-stratus-list-server@matronics.com] On Behalf Of Larry
> McFarland
> To: stratus-list@matronics.com
> Subject: Stratus-List: EGT-CHT Imbalance
>
>
> --> Stratus-List message posted by: "Larry McFarland"
> --> <larrymc@qconline.com>
>
> Hi guys,
> The steady 2 - 3 hour flights every day have brought my plane up to the
> 39-hours and I've a question that someone surely has tripped over and
> resolved or not.
>
> My right EGT reads 60 to 75-degrees hotter than the left which is not a
> concern until take off when the right one sees 1450 to 1460 for a short
> time. When all settles down, to cruise, the left is 1320 and the right
> is 1380. This has been re-checked by switching leads. I've probed for
> leaks in the intakes and this is not likely either. Odd too, the right
> CHT is consistently cooler than the left by 10 degrees.
> Perhaps there's no relationship, and the muffler design with the exhaust
>
> outlet pipe being more on the left side has something to do with this.
>
> I'm at the point of changing the right jet from a 170 to a 172 to get a
> cooler right EGT that stays in the 1300s. Bing says this shouldn't cause
> any difficulty, but still the problem begs the question.
>
> I've had the plane up to 125 at 5100, but the right EGT keeps me from
> being there for any protracted length of time, not that it's important
> for my kind of flying, but I think the EGT should be kept within limits
> wherever the RPS are in the Stratus engine. Hope I'm not wrong about
> this.
>
> Any recommendations out there?
>
> Larry McFarland
>
>
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