Today's Message Index:
----------------------
1. 04:15 AM - Re: Re: Cylinder Head Temperature Gages (Anthony Savarese)
2. 04:18 AM - Re: Re: Cylinder Head Temperature Gages (Greg Wrobel)
3. 04:27 AM - Re: Re: Cylinder Head Temperature Gages (Mark Pennington)
4. 04:43 AM - Re: Re: Cylinder Head Temperature Gages (Mark Pennington)
5. 05:14 AM - Re: Re: Cylinder Head Temperature Gages (Stephen van Dijck)
6. 05:58 AM - Re: Re: Cylinder Head Temperature Gages (Greg Wrobel)
7. 05:24 PM - Re: Cylinder Head Temperature Gages (Ttail)
Message 1
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| Subject: | Re: Cylinder Head Temperature Gages |
Hi Mark,
Actually the Yak 52=99s had both CHT probes on the rear plug of #4 cyl
inder from the factory.
I never found out why both were on #4. But I guess they knew what they were d
oing.
I knew #2 would always be hotter because I would test the cylinders with a l
aser temperature instrument. But still I never changed the configuration.
The only way to truly know is with a 9 cylinder CHT instrument. Ask who has a
JPI or similar engine monitor system installed on their engine. They will d
efinitely know which are the hottest cylinders and in what flight configurat
ion. Like takeoff, climb, cruise, slow flight, glide, aerobatics, etc.
Dennis
Sent from my iPhone
> On Jun 20, 2020, at 12:51 AM, Mark Pennington <pennington.construction.inc
.1@gmail.com> wrote:
>
> =EF=BB
> Dennis.
>
> We have this cleared up for the Housai.
>
> Is it the same for M14P. Cylinders 1 and 4. Number 4 for the front coc
kpit ?
>
> Thanks
> Mark
>
>> On Fri, Jun 19, 2020 at 6:16 PM Greg Wrobel <clouddog22@gmail.com> wrote:
>> Ok. At least I got everything connected to to the correct cylinders. 1&4.
Now just following wire or swapping gages (rear to Front) to see if the pro
blem follows. Y'all are great thanks a billion.
>>
>> Greg "Clouddog" Wrobel
>>
>>> On Fri, Jun 19, 2020, 14:25 Mark Pennington <pennington.construction.inc
.1@gmail.com> wrote:
>>> Walt.
>>> <IMG_3892.jpg>
>>>
>>> I am at the hangar with the tech manual for the Housai.
>>>
>>> You are correct as usual. It is cylinders 1 and 4.
>>>
>>> And Cylinder 4 goes to the front cockpit.
>>>
>>> I have attached a photo of the page in the manual.
>>>
>>> Start reading at code 41Y. 42Y talks about front cockpit. #4 cylinder
.
>>>
>>> Thanks Walt
>>>
>>> Mark Pennington
>>>
>>>
>>>
>>>> On Fri, Jun 19, 2020 at 1:47 PM Walter Lannon <wlannon@shaw.ca> wrote:
>>>> I can confirm that #1 and #4 rear spark plugs are the correct location f
or the CHT sensors.
>>>>
>>>> These are the two hottest cylinders. There is manual information that i
dentifies those and to which cockpit but I have no time right now to dig it u
p.
>>>>
>>>> Cheers;
>>>> Walt
>>>>
>>>> From: Mark Pennington
>>>> Sent: Friday, June 19, 2020 6:14 AM
>>>> To: yak-list@matronics.com
>>>> Subject: Re: Yak-List: Re: Cylinder Head Temperature Gages
>>>>
>>>> Good Morning Greg
>>>>
>>>> I fly a CJ with an M14P and my CHT sensors are on 1&2, not sure which i
s front and which is rear. Not sure how the CJ comes from the factory with a
Housai. Or how a Yak with an M14P is wired either.
>>>>
>>>> If you go to Dougs website and go to volume 5 and right click that book
and open it up in a different tab or download it to your computer look at p
age 407, Figure 2-14-2 in the book. It shows the complete wiring from the c
opper ring to the plug that plugs into your gauge. Yes there are two separat
e unrelated wire runs for the front and rear cockpits. Two each of the asse
mbly on page 407.
>>>>
>>>> The sensor is a thermocouple and does not require any exterior voltage t
o work. That is why it shows a cylinder head temp on the ground in the hang
ar with the master off.
>>>>
>>>> =46rom what I can tell, those of us that have the auto plug conversion k
its on our planes remove the washer on the spark plug and of course install t
he thermocouple copper ring in its place. Hopefully ensuring proper penetra
tion into the cylinder head for good combustion.
>>>>
>>>> You don't have to remove the washer on the plug, but I understand some f
olks do.
>>>>
>>>> If you take a look at page 407 you can see there are two separate areas
that have terminations that may be causing your shaking issues due to possi
ble loose connections or broken wires. On my aircraft I do not have the in
termediate terminals closest to the plug shown on page 407. The thermocoupl
e attaches at the engine and runs straight to the plug on the rear of my CHT
gauge. Not sure all planes are or were wired per the book on page 407.
The thermocouple assembly under the cowl is the first set of screw terminal
s shown on page 407.
>>>>
>>>>
>>>> Hope this helps. Please let us know what you found. It may help other
s.
>>>>
>>>>
>>>> Mark Pennington
>>>> CJ6 Driver.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Virus-free. www.avast.com
>>>>
>>>>> On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22@gmail.com> wro
te:
>>>>> 1&4 is the way it was when I bought it. My bad for assuming they were c
orrect. So what you're saying is 2&7 are the hottest cylinders with 2 going t
o the front gage and 7 to the rear gage? Anyone else have their temp probes
connected to different cylinders?
>>>>>
>>>>> Greg "Clouddog" Wrobel
>>>>>
>>>>>> On Fri, Jun 19, 2020, 06:17 Craig Payne <yakman285@gmail.com> wrote:
>>>>>> So, washers on # 1 and #4 ?? I believe they belong on #2 and #7. Soun
ds like other issues going on with the wiring as well.
>>>>>>
>>>>>> Craig Payne
Message 2
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| Subject: | Re: Cylinder Head Temperature Gages |
Thanks again Walt for the verification on where the temp pickups are
located on which sparkplugs. Swapping gages after a wire check will be
next.
Greg "Clouddog" Wrobel
On Fri, Jun 19, 2020, 13:47 Walter Lannon <wlannon@shaw.ca> wrote:
> I can confirm that #1 and #4 rear spark plugs are the correct location for
> the CHT sensors.
>
> These are the two hottest cylinders. There is manual information that
> identifies those and to which cockpit but I have no time right now to dig
> it up.
>
> Cheers;
> Walt
>
> *From:* Mark Pennington <pennington.construction.inc.1@gmail.com>
> *Sent:* Friday, June 19, 2020 6:14 AM
> *To:* yak-list@matronics.com
> *Subject:* Re: Yak-List: Re: Cylinder Head Temperature Gages
>
> Good Morning Greg
>
> I fly a CJ with an M14P and my CHT sensors are on 1&2, not sure which is
> front and which is rear. Not sure how the CJ comes from the factory with a
> Housai. Or how a Yak with an M14P is wired either.
>
> If you go to Dougs website and go to volume 5 and right click that book
> and open it up in a different tab or download it to your computer look at
> page 407, Figure 2-14-2 in the book. It shows the complete wiring from the
> copper ring to the plug that plugs into your gauge. Yes there are two
> separate unrelated wire runs for the front and rear cockpits. Two each of
> the assembly on page 407.
>
> The sensor is a thermocouple and does not require any exterior voltage to
> work. That is why it shows a cylinder head temp on the ground in the
> hangar with the master off.
>
> From what I can tell, those of us that have the auto plug conversion kits
> on our planes remove the washer on the spark plug and of course install the
> thermocouple copper ring in its place. Hopefully ensuring proper
> penetration into the cylinder head for good combustion.
>
> You don't have to remove the washer on the plug, but I understand some
> folks do.
>
> If you take a look at page 407 you can see there are two separate areas
> that have terminations that may be causing your shaking issues due to
> possible loose connections or broken wires. On my aircraft I do not have
> the intermediate terminals closest to the plug shown on page 407. The
> thermocouple attaches at the engine and runs straight to the plug on the
> rear of my CHT gauge. Not sure all planes are or were wired per the book
> on page 407. The thermocouple assembly under the cowl is the first set
> of screw terminals shown on page 407.
>
>
> Hope this helps. Please let us know what you found. It may help others.
>
>
> Mark Pennington
> CJ6 Driver.
>
>
> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free.
> www.avast.com
> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link>
>
> On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22@gmail.com> wrote:
>
>> 1&4 is the way it was when I bought it. My bad for assuming they were
>> correct. So what you're saying is 2&7 are the hottest cylinders with 2
>> going to the front gage and 7 to the rear gage? Anyone else have their
>> temp probes connected to different cylinders?
>>
>> Greg "Clouddog" Wrobel
>>
>> On Fri, Jun 19, 2020, 06:17 Craig Payne <yakman285@gmail.com> wrote:
>>
>>> So, washers on # 1 and #4 ?? I believe they belong on #2 and #7. Sounds
>>> like other issues going on with the wiring as well.
>>>
>>> Craig Payne
>>>
>>
Message 3
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| Subject: | Re: Cylinder Head Temperature Gages |
Steve.
Website is. CJ6.com
Mark Pennington
On Sat, Jun 20, 2020 at 2:49 AM Stephen van Dijck <s.dijck@planet.nl> wrote:
> Can someone send me Dougs website address.
>
> thanks,
> Steve
>
> On 20 Jun 2020, at 00:23, Mark Pennington <
> pennington.construction.inc.1@gmail.com> wrote:
>
> Dennis.
>
> We have this cleared up for the Housai.
>
> Is it the same for M14P. Cylinders 1 and 4. Number 4 for the front
> cockpit ?
>
> Thanks
> Mark
>
> On Fri, Jun 19, 2020 at 6:16 PM Greg Wrobel <clouddog22@gmail.com> wrote:
>
>> Ok. At least I got everything connected to to the correct cylinders. 1&4.
>> Now just following wire or swapping gages (rear to Front) to see if the
>> problem follows. Y'all are great thanks a billion.
>>
>> Greg "Clouddog" Wrobel
>>
>> On Fri, Jun 19, 2020, 14:25 Mark Pennington <
>> pennington.construction.inc.1@gmail.com> wrote:
>>
>>> Walt.
>>> <IMG_3892.jpg>
>>>
>>> I am at the hangar with the tech manual for the Housai.
>>>
>>> You are correct as usual. It is cylinders 1 and 4.
>>>
>>> And Cylinder 4 goes to the front cockpit.
>>>
>>> I have attached a photo of the page in the manual.
>>>
>>> Start reading at code 41Y. 42Y talks about front cockpit. #4
>>> cylinder.
>>>
>>> Thanks Walt
>>>
>>> Mark Pennington
>>>
>>>
>>>
>>> On Fri, Jun 19, 2020 at 1:47 PM Walter Lannon <wlannon@shaw.ca> wrote:
>>>
>>>> I can confirm that #1 and #4 rear spark plugs are the correct location
>>>> for the CHT sensors.
>>>>
>>>> These are the two hottest cylinders. There is manual information that
>>>> identifies those and to which cockpit but I have no time right now to dig
>>>> it up.
>>>>
>>>> Cheers;
>>>> Walt
>>>>
>>>> *From:* Mark Pennington <pennington.construction.inc.1@gmail.com>
>>>> *Sent:* Friday, June 19, 2020 6:14 AM
>>>> *To:* yak-list@matronics.com
>>>> *Subject:* Re: Yak-List: Re: Cylinder Head Temperature Gages
>>>>
>>>> Good Morning Greg
>>>>
>>>> I fly a CJ with an M14P and my CHT sensors are on 1&2, not sure which
>>>> is front and which is rear. Not sure how the CJ comes from the factory
>>>> with a Housai. Or how a Yak with an M14P is wired either.
>>>>
>>>> If you go to Dougs website and go to volume 5 and right click that book
>>>> and open it up in a different tab or download it to your computer look at
>>>> page 407, Figure 2-14-2 in the book. It shows the complete wiring from the
>>>> copper ring to the plug that plugs into your gauge. Yes there are two
>>>> separate unrelated wire runs for the front and rear cockpits. Two each of
>>>> the assembly on page 407.
>>>>
>>>> The sensor is a thermocouple and does not require any exterior voltage
>>>> to work. That is why it shows a cylinder head temp on the ground in the
>>>> hangar with the master off.
>>>>
>>>> From what I can tell, those of us that have the auto plug conversion
>>>> kits on our planes remove the washer on the spark plug and of course
>>>> install the thermocouple copper ring in its place. Hopefully ensuring
>>>> proper penetration into the cylinder head for good combustion.
>>>>
>>>> You don't have to remove the washer on the plug, but I understand some
>>>> folks do.
>>>>
>>>> If you take a look at page 407 you can see there are two separate areas
>>>> that have terminations that may be causing your shaking issues due to
>>>> possible loose connections or broken wires. On my aircraft I do not have
>>>> the intermediate terminals closest to the plug shown on page 407. The
>>>> thermocouple attaches at the engine and runs straight to the plug on the
>>>> rear of my CHT gauge. Not sure all planes are or were wired per the book
>>>> on page 407. The thermocouple assembly under the cowl is the first set
>>>> of screw terminals shown on page 407.
>>>>
>>>>
>>>> Hope this helps. Please let us know what you found. It may help
>>>> others.
>>>>
>>>>
>>>> Mark Pennington
>>>> CJ6 Driver.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free.
>>>> www.avast.com
>>>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link>
>>>>
>>>> On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22@gmail.com>
>>>> wrote:
>>>>
>>>>> 1&4 is the way it was when I bought it. My bad for assuming they were
>>>>> correct. So what you're saying is 2&7 are the hottest cylinders with 2
>>>>> going to the front gage and 7 to the rear gage? Anyone else have their
>>>>> temp probes connected to different cylinders?
>>>>>
>>>>> Greg "Clouddog" Wrobel
>>>>>
>>>>> On Fri, Jun 19, 2020, 06:17 Craig Payne <yakman285@gmail.com> wrote:
>>>>>
>>>>>> So, washers on # 1 and #4 ?? I believe they belong on #2 and #7.
>>>>>> Sounds like other issues going on with the wiring as well.
>>>>>>
>>>>>> Craig Payne
>>>>>>
>>>>>
>
Message 4
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| Subject: | Re: Cylinder Head Temperature Gages |
Thank you dennis...
<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_c
ampaign=sig-email&utm_content=webmail&utm_term=icon>
Virus-free.
www.avast.com
<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_c
ampaign=sig-email&utm_content=webmail&utm_term=link>
<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
On Sat, Jun 20, 2020 at 7:18 AM Anthony Savarese <
dsavarese0812@bellsouth.net> wrote:
> Hi Mark,
> Actually the Yak 52=99s had both CHT probes on the rear plug of #4
cylinder
> from the factory.
>
> I never found out why both were on #4. But I guess they knew what they
> were doing.
>
> I knew #2 would always be hotter because I would test the cylinders with
a
> laser temperature instrument. But still I never changed the configuration
.
>
> The only way to truly know is with a 9 cylinder CHT instrument. Ask who
> has a JPI or similar engine monitor system installed on their engine. The
y
> will definitely know which are the hottest cylinders and in what flight
> configuration. Like takeoff, climb, cruise, slow flight, glide, aerobatic
s,
> etc.
>
> Dennis
>
> Sent from my iPhone
>
> On Jun 20, 2020, at 12:51 AM, Mark Pennington <
> pennington.construction.inc.1@gmail.com> wrote:
>
> =EF=BB
> Dennis.
>
> We have this cleared up for the Housai.
>
> Is it the same for M14P. Cylinders 1 and 4. Number 4 for the front
> cockpit ?
>
> Thanks
> Mark
>
> On Fri, Jun 19, 2020 at 6:16 PM Greg Wrobel <clouddog22@gmail.com> wrote:
>
>> Ok. At least I got everything connected to to the correct cylinders. 1&4
.
>> Now just following wire or swapping gages (rear to Front) to see if the
>> problem follows. Y'all are great thanks a billion.
>>
>> Greg "Clouddog" Wrobel
>>
>> On Fri, Jun 19, 2020, 14:25 Mark Pennington <
>> pennington.construction.inc.1@gmail.com> wrote:
>>
>>> Walt.
>>> <IMG_3892.jpg>
>>>
>>> I am at the hangar with the tech manual for the Housai.
>>>
>>> You are correct as usual. It is cylinders 1 and 4.
>>>
>>> And Cylinder 4 goes to the front cockpit.
>>>
>>> I have attached a photo of the page in the manual.
>>>
>>> Start reading at code 41Y. 42Y talks about front cockpit. #4
>>> cylinder.
>>>
>>> Thanks Walt
>>>
>>> Mark Pennington
>>>
>>>
>>>
>>> On Fri, Jun 19, 2020 at 1:47 PM Walter Lannon <wlannon@shaw.ca> wrote:
>>>
>>>> I can confirm that #1 and #4 rear spark plugs are the correct location
>>>> for the CHT sensors.
>>>>
>>>> These are the two hottest cylinders. There is manual information that
>>>> identifies those and to which cockpit but I have no time right now to
dig
>>>> it up.
>>>>
>>>> Cheers;
>>>> Walt
>>>>
>>>> *From:* Mark Pennington <pennington.construction.inc.1@gmail.com>
>>>> *Sent:* Friday, June 19, 2020 6:14 AM
>>>> *To:* yak-list@matronics.com
>>>> *Subject:* Re: Yak-List: Re: Cylinder Head Temperature Gages
>>>>
>>>> Good Morning Greg
>>>>
>>>> I fly a CJ with an M14P and my CHT sensors are on 1&2, not sure which
>>>> is front and which is rear. Not sure how the CJ comes from the factor
y
>>>> with a Housai. Or how a Yak with an M14P is wired either.
>>>>
>>>> If you go to Dougs website and go to volume 5 and right click that boo
k
>>>> and open it up in a different tab or download it to your computer look
at
>>>> page 407, Figure 2-14-2 in the book. It shows the complete wiring fro
m the
>>>> copper ring to the plug that plugs into your gauge. Yes there are two
>>>> separate unrelated wire runs for the front and rear cockpits. Two eac
h of
>>>> the assembly on page 407.
>>>>
>>>> The sensor is a thermocouple and does not require any exterior voltage
>>>> to work. That is why it shows a cylinder head temp on the ground in t
he
>>>> hangar with the master off.
>>>>
>>>> From what I can tell, those of us that have the auto plug conversion
>>>> kits on our planes remove the washer on the spark plug and of course
>>>> install the thermocouple copper ring in its place. Hopefully ensuring
>>>> proper penetration into the cylinder head for good combustion.
>>>>
>>>> You don't have to remove the washer on the plug, but I understand some
>>>> folks do.
>>>>
>>>> If you take a look at page 407 you can see there are two separate area
s
>>>> that have terminations that may be causing your shaking issues due to
>>>> possible loose connections or broken wires. On my aircraft I do not
have
>>>> the intermediate terminals closest to the plug shown on page 407. The
>>>> thermocouple attaches at the engine and runs straight to the plug on t
he
>>>> rear of my CHT gauge. Not sure all planes are or were wired per the
book
>>>> on page 407. The thermocouple assembly under the cowl is the first
set
>>>> of screw terminals shown on page 407.
>>>>
>>>>
>>>> Hope this helps. Please let us know what you found. It may help
>>>> others.
>>>>
>>>>
>>>> Mark Pennington
>>>> CJ6 Driver.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&
utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free.
>>>> www.avast.com
>>>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&
utm_campaign=sig-email&utm_content=webmail&utm_term=link>
>>>>
>>>> On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22@gmail.com>
>>>> wrote:
>>>>
>>>>> 1&4 is the way it was when I bought it. My bad for assuming they were
>>>>> correct. So what you're saying is 2&7 are the hottest cylinders with
2
>>>>> going to the front gage and 7 to the rear gage? Anyone else have the
ir
>>>>> temp probes connected to different cylinders?
>>>>>
>>>>> Greg "Clouddog" Wrobel
>>>>>
>>>>> On Fri, Jun 19, 2020, 06:17 Craig Payne <yakman285@gmail.com> wrote:
>>>>>
>>>>>> So, washers on # 1 and #4 ?? I believe they belong on #2 and #7.
>>>>>> Sounds like other issues going on with the wiring as well.
>>>>>>
>>>>>> Craig Payne
>>>>>>
>>>>>
Message 5
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| Subject: | Re: Cylinder Head Temperature Gages |
Hi Mark,
Thank very much.
cheers Steve
> On 20 Jun 2020, at 11:35, Mark Pennington
<pennington.construction.inc.1@gmail.com> wrote:
>
> Steve.
>
>
> Website is. CJ6.com
>
> Mark Pennington
>
> On Sat, Jun 20, 2020 at 2:49 AM Stephen van Dijck <s.dijck@planet.nl
<mailto:s.dijck@planet.nl>> wrote:
> Can someone send me Dougs website address.
>
> thanks,
> Steve
>
>> On 20 Jun 2020, at 00:23, Mark Pennington
<pennington.construction.inc.1@gmail.com
<mailto:pennington.construction.inc.1@gmail.com>> wrote:
>>
>> Dennis.
>>
>> We have this cleared up for the Housai.
>>
>> Is it the same for M14P. Cylinders 1 and 4. Number 4 for the
front cockpit ?
>>
>> Thanks
>> Mark
>>
>> On Fri, Jun 19, 2020 at 6:16 PM Greg Wrobel <clouddog22@gmail.com
<mailto:clouddog22@gmail.com>> wrote:
>> Ok. At least I got everything connected to to the correct cylinders.
1&4. Now just following wire or swapping gages (rear to Front) to see if
the problem follows. Y'all are great thanks a billion.
>>
>> Greg "Clouddog" Wrobel
>>
>> On Fri, Jun 19, 2020, 14:25 Mark Pennington
<pennington.construction.inc.1@gmail.com
<mailto:pennington.construction.inc.1@gmail.com>> wrote:
>> Walt.
>> <IMG_3892.jpg>
>>
>> I am at the hangar with the tech manual for the Housai.
>>
>> You are correct as usual. It is cylinders 1 and 4.
>>
>> And Cylinder 4 goes to the front cockpit.
>>
>> I have attached a photo of the page in the manual.
>>
>> Start reading at code 41Y. 42Y talks about front cockpit. #4
cylinder.
>>
>> Thanks Walt
>>
>> Mark Pennington
>>
>>
>>
>> On Fri, Jun 19, 2020 at 1:47 PM Walter Lannon <wlannon@shaw.ca
<mailto:wlannon@shaw.ca>> wrote:
>> I can confirm that #1 and #4 rear spark plugs are the correct
location for the CHT sensors.
>>
>> These are the two hottest cylinders. There is manual information
that identifies those and to which cockpit but I have no time right now
to dig it up.
>>
>> Cheers;
>> Walt
>>
>> From: Mark Pennington
<mailto:pennington.construction.inc.1@gmail.com>
>> Sent: Friday, June 19, 2020 6:14 AM
>> To: yak-list@matronics.com <mailto:yak-list@matronics.com>
>> Subject: Re: Yak-List: Re: Cylinder Head Temperature Gages
>>
>> Good Morning Greg
>>
>> I fly a CJ with an M14P and my CHT sensors are on 1&2, not sure which
is front and which is rear. Not sure how the CJ comes from the factory
with a Housai. Or how a Yak with an M14P is wired either.
>>
>> If you go to Dougs website and go to volume 5 and right click that
book and open it up in a different tab or download it to your computer
look at page 407, Figure 2-14-2 in the book. It shows the complete
wiring from the copper ring to the plug that plugs into your gauge. Yes
there are two separate unrelated wire runs for the front and rear
cockpits. Two each of the assembly on page 407.
>>
>> The sensor is a thermocouple and does not require any exterior
voltage to work. That is why it shows a cylinder head temp on the
ground in the hangar with the master off.
>>
>> =46rom what I can tell, those of us that have the auto plug
conversion kits on our planes remove the washer on the spark plug and of
course install the thermocouple copper ring in its place. Hopefully
ensuring proper penetration into the cylinder head for good combustion.
>>
>> You don't have to remove the washer on the plug, but I understand
some folks do.
>>
>> If you take a look at page 407 you can see there are two separate
areas that have terminations that may be causing your shaking issues due
to possible loose connections or broken wires. On my aircraft I do not
have the intermediate terminals closest to the plug shown on page 407.
The thermocouple attaches at the engine and runs straight to the plug on
the rear of my CHT gauge. Not sure all planes are or were wired per
the book on page 407. The thermocouple assembly under the cowl is the
first set of screw terminals shown on page 407.
>>
>>
>> Hope this helps. Please let us know what you found. It may help
others.
>>
>>
>> Mark Pennington
>> CJ6 Driver.
>>
>>
>>
>>
>>
>>
>>
>>
>>
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>>
>> On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22@gmail.com
<mailto:clouddog22@gmail.com>> wrote:
>> 1&4 is the way it was when I bought it. My bad for assuming they were
correct. So what you're saying is 2&7 are the hottest cylinders with 2
going to the front gage and 7 to the rear gage? Anyone else have their
temp probes connected to different cylinders?
>>
>> Greg "Clouddog" Wrobel
>>
>> On Fri, Jun 19, 2020, 06:17 Craig Payne <yakman285@gmail.com
<mailto:yakman285@gmail.com>> wrote:
>> So, washers on # 1 and #4 ?? I believe they belong on #2 and #7.
Sounds like other issues going on with the wiring as well.
>>
>> Craig Payne
>
Message 6
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| Subject: | Re: Cylinder Head Temperature Gages |
Thanks for the info Mark. The back gage is normal again so perhaps my last
backseater was giving me bad info as they are two separate systems. I'll
start the wiring check.
Greg "Clouddog" Wrobel
On Fri, Jun 19, 2020, 09:22 Mark Pennington <
pennington.construction.inc.1@gmail.com> wrote:
> Good Morning Greg
>
> I fly a CJ with an M14P and my CHT sensors are on 1&2, not sure which is
> front and which is rear. Not sure how the CJ comes from the factory with a
> Housai. Or how a Yak with an M14P is wired either.
>
> If you go to Dougs website and go to volume 5 and right click that book
> and open it up in a different tab or download it to your computer look at
> page 407, Figure 2-14-2 in the book. It shows the complete wiring from the
> copper ring to the plug that plugs into your gauge. Yes there are two
> separate unrelated wire runs for the front and rear cockpits. Two each of
> the assembly on page 407.
>
> The sensor is a thermocouple and does not require any exterior voltage to
> work. That is why it shows a cylinder head temp on the ground in the
> hangar with the master off.
>
> From what I can tell, those of us that have the auto plug conversion kits
> on our planes remove the washer on the spark plug and of course install the
> thermocouple copper ring in its place. Hopefully ensuring proper
> penetration into the cylinder head for good combustion.
>
> You don't have to remove the washer on the plug, but I understand some
> folks do.
>
> If you take a look at page 407 you can see there are two separate areas
> that have terminations that may be causing your shaking issues due to
> possible loose connections or broken wires. On my aircraft I do not have
> the intermediate terminals closest to the plug shown on page 407. The
> thermocouple attaches at the engine and runs straight to the plug on the
> rear of my CHT gauge. Not sure all planes are or were wired per the book
> on page 407. The thermocouple assembly under the cowl is the first set
> of screw terminals shown on page 407.
>
>
> Hope this helps. Please let us know what you found. It may help others.
>
>
> Mark Pennington
> CJ6 Driver.
>
>
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>
> On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22@gmail.com> wrote:
>
>> 1&4 is the way it was when I bought it. My bad for assuming they were
>> correct. So what you're saying is 2&7 are the hottest cylinders with 2
>> going to the front gage and 7 to the rear gage? Anyone else have their
>> temp probes connected to different cylinders?
>>
>> Greg "Clouddog" Wrobel
>>
>> On Fri, Jun 19, 2020, 06:17 Craig Payne <yakman285@gmail.com> wrote:
>>
>>> So, washers on # 1 and #4 ?? I believe they belong on #2 and #7. Sounds
>>> like other issues going on with the wiring as well.
>>>
>>> Craig Payne
>>>
>>
Message 7
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| Subject: | Re: Cylinder Head Temperature Gages |
FWIW.
M14PF 700mm/70% 5000'AMSL winter over Oz
(https://postimages.org/)
--------
Sean Trestrail
ttail[at]internode.on.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=496984#496984
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