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yakman285(at)gmail.com
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 Posted: Fri Jun 19, 2020 2:13 am Post subject: Cylinder Head Temperature Gages |
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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
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Clouddog
Joined: 02 Jun 2016
Posts: 119
Location: Lebanon, TN
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| Posted: Fri Jun 19, 2020 4:13 am Post subject: Cylinder Head Temperature Gages |
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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(at)gmail.com (yakman285(at)gmail.com)> wrote:
| Quote: | 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
|
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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pennington.construction.i
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| Posted: Fri Jun 19, 2020 5:17 am Post subject: Cylinder Head Temperature Gages |
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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.
 Virus-free. www.avast.com [url=#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2][/url]
On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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(at)gmail.com (yakman285(at)gmail.com)> wrote:
| Quote: | 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
|
|
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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pennington.construction.i
Guest
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| Posted: Fri Jun 19, 2020 10:17 am Post subject: Cylinder Head Temperature Gages |
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Walt.Â
[img]cid:172cdc8b7dcccd417661[/img]
Â
I am at the hangar with the tech manual for the Housai. Â
You are correct as usual. It is cylinders 1 and 4. Â
And Cylinder 4 goes to the front cockpit. Â
I have attached a photo of the page in the manual.Â
Start reading at code 41Y. Â 42Y talks about front cockpit. Â #4 cylinder. Â
Thanks Walt
Mark PenningtonÂ
On Fri, Jun 19, 2020 at 1:47 PM Walter Lannon <wlannon(at)shaw.ca (wlannon(at)shaw.ca)> wrote:
| Quote: | I can confirm that #1 and #4 rear spark plugs are the correct location for the CHT sensors.
Â
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.
Â
Cheers;
Walt
Â
From: Mark Pennington (pennington.construction.inc.1(at)gmail.com)
Sent: Friday, June 19, 2020 6:14 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Re: Re: Cylinder Head Temperature Gages
Â
Good Morning Greg Â
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.
Â
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.
Â
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.
Â
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.
Â
You don't have to remove the washer on the plug, but I understand some folks do.
Â
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.
Â
Â
Hope this helps. Please let us know what you found. It may help others.
Â
Â
Mark Pennington
CJ6 Driver.
Â
Â
Â
Â
Â
Â
Â
Virus-free. www.avast.com
Â
On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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
Â
On Fri, Jun 19, 2020, 06:17 Craig Payne <yakman285(at)gmail.com (yakman285(at)gmail.com)> wrote:
| Quote: | 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.
Â
Craig Payne
|
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|
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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Clouddog
Joined: 02 Jun 2016
Posts: 119
Location: Lebanon, TN
|
| Posted: Fri Jun 19, 2020 2:08 pm Post subject: Cylinder Head Temperature Gages |
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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(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:
| Quote: | Walt.Â
[img]cid:172cdc8b7dcccd417661[/img]
Â
I am at the hangar with the tech manual for the Housai. Â
You are correct as usual. It is cylinders 1 and 4. Â
And Cylinder 4 goes to the front cockpit. Â
I have attached a photo of the page in the manual.Â
Start reading at code 41Y. Â 42Y talks about front cockpit. Â #4 cylinder. Â
Thanks Walt
Mark PenningtonÂ
On Fri, Jun 19, 2020 at 1:47 PM Walter Lannon <wlannon(at)shaw.ca (wlannon(at)shaw.ca)> wrote:
| Quote: | I can confirm that #1 and #4 rear spark plugs are the correct location for the CHT sensors.
Â
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.
Â
Cheers;
Walt
Â
From: Mark Pennington (pennington.construction.inc.1(at)gmail.com)
Sent: Friday, June 19, 2020 6:14 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Re: Re: Cylinder Head Temperature Gages
Â
Good Morning Greg Â
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.
Â
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.
Â
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.
Â
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.
Â
You don't have to remove the washer on the plug, but I understand some folks do.
Â
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.
Â
Â
Hope this helps. Please let us know what you found. It may help others.
Â
Â
Mark Pennington
CJ6 Driver.
Â
Â
Â
Â
Â
Â
Â
Virus-free. www.avast.com
Â
On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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
Â
On Fri, Jun 19, 2020, 06:17 Craig Payne <yakman285(at)gmail.com (yakman285(at)gmail.com)> wrote:
| Quote: | 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.
Â
Craig Payne
|
|
|
|
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
|
| Description: |
|
| Filesize: |
2.88 MB |
| Viewed: |
9733 Time(s) |
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pennington.construction.i
Guest
|
| Posted: Fri Jun 19, 2020 8:49 pm Post subject: Cylinder Head Temperature Gages |
|
|
Dennis.Â
We have this cleared up for the Housai. Â
Is it the same for M14P. Â Cylinders 1 and 4. Â Number 4 for the front cockpit ?
Thanks
Mark
On Fri, Jun 19, 2020 at 6:16 PM Greg Wrobel <clouddog22(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:
| Quote: | Walt.Â
[img]cid:172cdc8b7dcccd417661[/img]
Â
I am at the hangar with the tech manual for the Housai. Â
You are correct as usual. It is cylinders 1 and 4. Â
And Cylinder 4 goes to the front cockpit. Â
I have attached a photo of the page in the manual.Â
Start reading at code 41Y. Â 42Y talks about front cockpit. Â #4 cylinder. Â
Thanks Walt
Mark PenningtonÂ
On Fri, Jun 19, 2020 at 1:47 PM Walter Lannon <wlannon(at)shaw.ca (wlannon(at)shaw.ca)> wrote:
| Quote: | I can confirm that #1 and #4 rear spark plugs are the correct location for the CHT sensors.
Â
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.
Â
Cheers;
Walt
Â
From: Mark Pennington (pennington.construction.inc.1(at)gmail.com)
Sent: Friday, June 19, 2020 6:14 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Re: Re: Cylinder Head Temperature Gages
Â
Good Morning Greg Â
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.
Â
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.
Â
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.
Â
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.
Â
You don't have to remove the washer on the plug, but I understand some folks do.
Â
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.
Â
Â
Hope this helps. Please let us know what you found. It may help others.
Â
Â
Mark Pennington
CJ6 Driver.
Â
Â
Â
Â
Â
Â
Â
Virus-free. www.avast.com
Â
On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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
Â
On Fri, Jun 19, 2020, 06:17 Craig Payne <yakman285(at)gmail.com (yakman285(at)gmail.com)> wrote:
| Quote: | 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.
Â
Craig Payne
|
|
|
|
|
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
|
| Description: |
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| Filesize: |
2.88 MB |
| Viewed: |
9722 Time(s) |
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kiwi679
Joined: 08 Jul 2011
Posts: 20
Location: Netherlands
|
| Posted: Fri Jun 19, 2020 10:45 pm Post subject: Cylinder Head Temperature Gages |
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Can someone send me Dougs website address.
thanks,
Steve | Quote: | On 20 Jun 2020, at 00:23, Mark Pennington <pennington.construction.inc.1(at)gmail.com (pennington.construction.inc.1(at)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(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:
| Quote: | 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(at)shaw.ca (wlannon(at)shaw.ca)> wrote:
| Quote: | 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(at)gmail.com)
Sent: Friday, June 19, 2020 6:14 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Re: 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.
Virus-free. www.avast.com
On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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(at)gmail.com (yakman285(at)gmail.com)> wrote:
| Quote: | 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
|
|
|
|
|
|
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
|
_________________
regards Stephen |
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dsavarese0812(at)bellsout
Guest
|
| Posted: Sat Jun 20, 2020 3:15 am Post subject: Cylinder Head Temperature Gages |
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|
Hi Mark,Actually the Yak 52’s 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. They will definitely know which are the hottest cylinders and in what flight configuration. Like takeoff, climb, cruise, slow flight, glide, aerobatics, etc.
Dennis
Sent from my iPhone
| Quote: | On Jun 20, 2020, at 12:51 AM, Mark Pennington <pennington.construction.inc.1(at)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(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:
| Quote: | 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(at)shaw.ca (wlannon(at)shaw.ca)> wrote:
| Quote: | 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(at)gmail.com)
Sent: Friday, June 19, 2020 6:14 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Re: 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.
Virus-free. www.avast.com
On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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(at)gmail.com (yakman285(at)gmail.com)> wrote:
| Quote: | 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
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Clouddog
Joined: 02 Jun 2016
Posts: 119
Location: Lebanon, TN
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| Posted: Sat Jun 20, 2020 3:18 am Post subject: Cylinder Head Temperature Gages |
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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(at)shaw.ca (wlannon(at)shaw.ca)> wrote:
| Quote: | I can confirm that #1 and #4 rear spark plugs are the correct location for the CHT sensors.
Â
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.
Â
Cheers;
Walt
Â
From: Mark Pennington (pennington.construction.inc.1(at)gmail.com)
Sent: Friday, June 19, 2020 6:14 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Re: Re: Cylinder Head Temperature Gages
Â
Good Morning Greg Â
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.
Â
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.
Â
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.
Â
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.
Â
You don't have to remove the washer on the plug, but I understand some folks do.
Â
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.
Â
Â
Hope this helps. Please let us know what you found. It may help others.
Â
Â
Mark Pennington
CJ6 Driver.
Â
Â
Â
Â
Â
Â
Â
Virus-free. www.avast.com
Â
On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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
Â
On Fri, Jun 19, 2020, 06:17 Craig Payne <yakman285(at)gmail.com (yakman285(at)gmail.com)> wrote:
| Quote: | 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.
Â
Craig Payne
|
|
|
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pennington.construction.i
Guest
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| Posted: Sat Jun 20, 2020 3:27 am Post subject: Cylinder Head Temperature Gages |
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Steve. Â Â
Website is. Â CJ6.com
Mark Pennington
On Sat, Jun 20, 2020 at 2:49 AM Stephen van Dijck <s.dijck(at)planet.nl (s.dijck(at)planet.nl)> wrote:
| Quote: | Can someone send me Dougs website address.
thanks,
Steve
| Quote: | On 20 Jun 2020, at 00:23, Mark Pennington <pennington.construction.inc.1(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:
Dennis.Â
We have this cleared up for the Housai. Â
Is it the same for M14P. Â Cylinders 1 and 4. Â Number 4 for the front cockpit ?
Thanks
Mark
On Fri, Jun 19, 2020 at 6:16 PM Greg Wrobel <clouddog22(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:
| Quote: | Walt.Â
<IMG_3892.jpg>
Â
I am at the hangar with the tech manual for the Housai. Â
You are correct as usual. It is cylinders 1 and 4. Â
And Cylinder 4 goes to the front cockpit. Â
I have attached a photo of the page in the manual.Â
Start reading at code 41Y. Â 42Y talks about front cockpit. Â #4 cylinder. Â
Thanks Walt
Mark PenningtonÂ
On Fri, Jun 19, 2020 at 1:47 PM Walter Lannon <wlannon(at)shaw.ca (wlannon(at)shaw.ca)> wrote:
| Quote: | I can confirm that #1 and #4 rear spark plugs are the correct location for the CHT sensors.
Â
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.
Â
Cheers;
Walt
Â
From: Mark Pennington (pennington.construction.inc.1(at)gmail.com)
Sent: Friday, June 19, 2020 6:14 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Re: Re: Cylinder Head Temperature Gages
Â
Good Morning Greg Â
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.
Â
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.
Â
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.
Â
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.
Â
You don't have to remove the washer on the plug, but I understand some folks do.
Â
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.
Â
Â
Hope this helps. Please let us know what you found. It may help others.
Â
Â
Mark Pennington
CJ6 Driver.
Â
Â
Â
Â
Â
Â
Â
Virus-free. www.avast.com
Â
On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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
Â
On Fri, Jun 19, 2020, 06:17 Craig Payne <yakman285(at)gmail.com (yakman285(at)gmail.com)> wrote:
| Quote: | 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.
Â
Craig Payne
|
|
|
|
|
|
|
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pennington.construction.i
Guest
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| Posted: Sat Jun 20, 2020 3:43 am Post subject: Cylinder Head Temperature Gages |
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Thank you dennis...
<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon>
Virus-free.
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On Sat, Jun 20, 2020 at 7:18 AM Anthony Savarese <
dsavarese0812(at)bellsouth.net> wrote:
[quote] Hi Mark,
Actually the Yak 52’s 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 Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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kiwi679
Joined: 08 Jul 2011
Posts: 20
Location: Netherlands
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| Posted: Sat Jun 20, 2020 4:14 am Post subject: Cylinder Head Temperature Gages |
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|
Hi Mark,
Thank very much.
cheers Steve | Quote: | On 20 Jun 2020, at 11:35, Mark Pennington <pennington.construction.inc.1(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:
Steve.
Website is. CJ6.com
Mark Pennington
On Sat, Jun 20, 2020 at 2:49 AM Stephen van Dijck <s.dijck(at)planet.nl (s.dijck(at)planet.nl)> wrote:
| Quote: | Can someone send me Dougs website address.
thanks,
Steve | Quote: | On 20 Jun 2020, at 00:23, Mark Pennington <pennington.construction.inc.1(at)gmail.com (pennington.construction.inc.1(at)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(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:
| Quote: | 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(at)shaw.ca (wlannon(at)shaw.ca)> wrote:
| Quote: | 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(at)gmail.com)
Sent: Friday, June 19, 2020 6:14 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Re: 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.
Virus-free. www.avast.com
On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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(at)gmail.com (yakman285(at)gmail.com)> wrote:
| Quote: | 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
|
|
|
|
|
|
|
|
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Clouddog
Joined: 02 Jun 2016
Posts: 119
Location: Lebanon, TN
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| Posted: Sat Jun 20, 2020 4:58 am Post subject: 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(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:
| Quote: | 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.
Virus-free. www.avast.com [url=#m_-2219860867228605820_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2][/url]
On Fri, Jun 19, 2020 at 8:17 AM Greg Wrobel <clouddog22(at)gmail.com (clouddog22(at)gmail.com)> wrote:
| Quote: | 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(at)gmail.com (yakman285(at)gmail.com)> wrote:
| Quote: | 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
|
|
|
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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Ttail
Joined: 24 Jun 2013
Posts: 120
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