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pjdisher(at)bigpond.com
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 Posted: Wed Sep 24, 2008 10:47 pm Post subject: CHT |
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To all,
Could someone please help me with some options.
While holding the aircraft into a breeze about 10mph and also taxing my CHTs are 1-327, 2-330, 3-368, 4-360, 5-427, 6-372 F
How can I reduce the temperature on No 5 (at) 427F ?
I have switched the probe from another cylinder and probes are OK.
I also have the cowlings top and bottom fitted.
I have the V plates on top of the cylinders, should they be underneath the cylinders, would this help?
Would welcome any ideas, anyone.
I'm loosing faith in this JABIRU engine.
Many thanks,
Pete Disher
VH-PDI
Kit 30
[quote][b]
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ryan(at)greenlandings.com
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| Posted: Thu Sep 25, 2008 4:34 am Post subject: CHT |
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Pete,
It is not advised to do much taxi testing or ground run ups with your new Jabiru engine. I have installed more than 20 jabiru engines and have found that within the first few hours the engine is very vulnerable. At Green Landings in the first days of taxi testing we can only get about 2 to 3 runs down the runway without getting the temperature to hot. If i see the temps rising quickly i will shut down the engine and allow it to cool for an hour or so. Remember heat will build even after the engine is shut off. Also never run the engine on an open cowled system. This will also have the cylinder hot in mins. The best thing to do is find out if your aircraft is stable at just above take off speed and head to the sky. After the climb the engine will cool in level flight.
Once you have about 10-15 hours and change your oil at around 25 you will see very noticeable temp differences. After the break in period you will be able to run your Jabiru engine on the ground without any problems. Another thing never try to allow your engine to exceed 380, 390 is max.
Have faith, I just needs to break in!!
Ryan Gross
Green Landings Flight Center, Inc
SkyRanger Aircraft
Arion Lightning
304-754-6010
[quote]-----Original Message-----
From: "Peter and Jan Disher" <pjdisher(at)bigpond.com>
To: <lightning-list(at)matronics.com>
Date: Thu, 25 Sep 2008 16:46:29 +1000
Subject: CHT
To all,
Could someone please help me with some options.
While holding the aircraft into a breeze about 10mph and also taxing my CHTs are 1-327, 2-330, 3-368, 4-360, 5-427, 6-372 F
How can I reduce the temperature on No 5 (at) 427F ?
I have switched the probe from another cylinder and probes are OK.
I also have the cowlings top and bottom fitted.
I have the V plates on top of the cylinders, should they be underneath the cylinders, would this help?
Would welcome any ideas, anyone.
I'm loosing faith in this JABIRU engine.
Many thanks,
Pete Disher
VH-PDI
Kit 30
[b]
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walt.mefford(at)garmin.co
Guest
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| Posted: Thu Sep 25, 2008 6:01 am Post subject: CHT |
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Thanks Ryan,
I was seeing very similar temps on my first taxi runs and was also concerned.
Walt M.
N881WP
From: owner-lightning-list-server(at)matronics.com [mailto:owner-lightning-list-server(at)matronics.com] On Behalf Of ryan gross
Sent: Thursday, September 25, 2008 5:32 AM
To: lightning-list(at)matronics.com
Subject: Re: CHT
Pete,
It is not advised to do much taxi testing or ground run ups with your new Jabiru engine. I have installed more than 20 jabiru engines and have found that within the first few hours the engine is very vulnerable. At Green Landings in the first days of taxi testing we can only get about 2 to 3 runs down the runway without getting the temperature to hot. If i see the temps rising quickly i will shut down the engine and allow it to cool for an hour or so. Remember heat will build even after the engine is shut off. Also never run the engine on an open cowled system. This will also have the cylinder hot in mins. The best thing to do is find out if your aircraft is stable at just above take off speed and head to the sky. After the climb the engine will cool in level flight.
Once you have about 10-15 hours and change your oil at around 25 you will see very noticeable temp differences. After the break in period you will be able to run your Jabiru engine on the ground without any problems. Another thing never try to allow your engine to exceed 380, 390 is max.
Have faith, I just needs to break in!!
Ryan Gross
Green Landings Flight Center, Inc
SkyRanger Aircraft
Arion Lightning
304-754-6010
-----Original Message-----
From: "Peter and Jan Disher" <pjdisher(at)bigpond.com>
To: <lightning-list(at)matronics.com>
Date: Thu, 25 Sep 2008 16:46:29 +1000
Subject: CHT
To all,
Could someone please help me with some options.
While holding the aircraft into a breeze about 10mph and also taxing my CHTs are 1-327, 2-330, 3-368, 4-360, 5-427, 6-372 F
How can I reduce the temperature on No 5 (at) 427F ?
I have switched the probe from another cylinder and probes are OK.
I also have the cowlings top and bottom fitted.
I have the V plates on top of the cylinders, should they be underneath the cylinders, would this help?
Would welcome any ideas, anyone.
I'm loosing faith in this JABIRU engine.
Many thanks,
Pete Disher
VH-PDI
Kit 30
| Quote: | | http://www.matronics.com/Navigator?Lightning-Listhttp://forums.matronics.comhttp://www.matronics.com/contribution |
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Thank you for your cooperation [quote][b]
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info(at)flylightning.net
Guest
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| Posted: Thu Sep 25, 2008 7:48 am Post subject: CHT |
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Peter,
Please send photos of your install, we worked very hard to insure that the cowl operates well with the jabiru engine. Even on 100 degree days here in TN with the humidity at 90% we can taxi almost all day long if the cowl is on it and never exceed 350. I would suspect something is up with your ability to get the air out of the cowl and or properly baffled around the cylinders.
Nick Otterback
Arion Aircraft, LLC
From: owner-lightning-list-server(at)matronics.com [mailto:owner-lightning-list-server(at)matronics.com] On Behalf Of ryan gross
Sent: Thursday, September 25, 2008 7:32 AM
To: lightning-list(at)matronics.com
Subject: Re: CHT
Pete,
It is not advised to do much taxi testing or ground run ups with your new Jabiru engine. I have installed more than 20 jabiru engines and have found that within the first few hours the engine is very vulnerable. At Green Landings in the first days of taxi testing we can only get about 2 to 3 runs down the runway without getting the temperature to hot. If i see the temps rising quickly i will shut down the engine and allow it to cool for an hour or so. Remember heat will build even after the engine is shut off. Also never run the engine on an open cowled system. This will also have the cylinder hot in mins. The best thing to do is find out if your aircraft is stable at just above take off speed and head to the sky. After the climb the engine will cool in level flight.
Once you have about 10-15 hours and change your oil at around 25 you will see very noticeable temp differences. After the break in period you will be able to run your Jabiru engine on the ground without any problems. Another thing never try to allow your engine to exceed 380, 390 is max.
Have faith, I just needs to break in!!
Ryan Gross
Green Landings Flight Center, Inc
SkyRanger Aircraft
Arion Lightning
304-754-6010
-----Original Message-----
From: "Peter and Jan Disher" <pjdisher(at)bigpond.com>
To: <lightning-list(at)matronics.com>
Date: Thu, 25 Sep 2008 16:46:29 +1000
Subject: CHT
To all,
Could someone please help me with some options.
While holding the aircraft into a breeze about 10mph and also taxing my CHTs are 1-327, 2-330, 3-368, 4-360, 5-427, 6-372 F
How can I reduce the temperature on No 5 (at) 427F ?
I have switched the probe from another cylinder and probes are OK.
I also have the cowlings top and bottom fitted.
I have the V plates on top of the cylinders, should they be underneath the cylinders, would this help?
Would welcome any ideas, anyone.
I'm loosing faith in this JABIRU engine.
Many thanks,
Pete Disher
VH-PDI
Kit 30
| Quote: | | http://www.matronics.com/Navigator?Lightning-Listhttp://forums.matronics.comhttp://www.matronics.com/contribution |
0123456789 | Quote: | | http://www.matronics.com/Navigator?Lightning-List |
0 | Quote: | | http://www.matronics.com/Navigator?Lightning-List |
1 | Quote: | | http://www.matronics.com/Navigator?Lightning-List |
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5
[quote][b]
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walt.mefford(at)garmin.co
Guest
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| Posted: Thu Sep 25, 2008 10:06 am Post subject: CHT |
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Nick,
I am not Peter, but I have experienced similar temperatures.
Walt M.
#55, AZ
From: owner-lightning-list-server(at)matronics.com [mailto:owner-lightning-list-server(at)matronics.com] On Behalf Of flylightning
Sent: Thursday, September 25, 2008 8:47 AM
To: lightning-list(at)matronics.com
Subject: RE: CHT
Peter,
Please send photos of your install, we worked very hard to insure that the cowl operates well with the jabiru engine. Even on 100 degree days here in TN with the humidity at 90% we can taxi almost all day long if the cowl is on it and never exceed 350. I would suspect something is up with your ability to get the air out of the cowl and or properly baffled around the cylinders.
Nick Otterback
Arion Aircraft, LLC
From: owner-lightning-list-server(at)matronics.com [mailto:owner-lightning-list-server(at)matronics.com] On Behalf Of ryan gross
Sent: Thursday, September 25, 2008 7:32 AM
To: lightning-list(at)matronics.com
Subject: Re: CHT
Pete,
It is not advised to do much taxi testing or ground run ups with your new Jabiru engine. I have installed more than 20 jabiru engines and have found that within the first few hours the engine is very vulnerable. At Green Landings in the first days of taxi testing we can only get about 2 to 3 runs down the runway without getting the temperature to hot. If i see the temps rising quickly i will shut down the engine and allow it to cool for an hour or so. Remember heat will build even after the engine is shut off. Also never run the engine on an open cowled system. This will also have the cylinder hot in mins. The best thing to do is find out if your aircraft is stable at just above take off speed and head to the sky. After the climb the engine will cool in level flight.
Once you have about 10-15 hours and change your oil at around 25 you will see very noticeable temp differences. After the break in period you will be able to run your Jabiru engine on the ground without any problems. Another thing never try to allow your engine to exceed 380, 390 is max.
Have faith, I just needs to break in!!
Ryan Gross
Green Landings Flight Center, Inc
SkyRanger Aircraft
Arion Lightning
304-754-6010
-----Original Message-----
From: "Peter and Jan Disher" <pjdisher(at)bigpond.com>
To: <lightning-list(at)matronics.com>
Date: Thu, 25 Sep 2008 16:46:29 +1000
Subject: CHT
To all,
Could someone please help me with some options.
While holding the aircraft into a breeze about 10mph and also taxing my CHTs are 1-327, 2-330, 3-368, 4-360, 5-427, 6-372 F
How can I reduce the temperature on No 5 (at) 427F ?
I have switched the probe from another cylinder and probes are OK.
I also have the cowlings top and bottom fitted.
I have the V plates on top of the cylinders, should they be underneath the cylinders, would this help?
Would welcome any ideas, anyone.
I'm loosing faith in this JABIRU engine.
Many thanks,
Pete Disher
VH-PDI
Kit 30
| Quote: | | http://www.matronics.com/Navigator?Lightning-Listhttp://forums.matronics.comhttp://www.matronics.com/contribution |
[/b]http://www.matronics.com/Navigator?Lightning-List [/quote]0http://forums.matronics.com[/b] [/quote]12
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This e-mail and any attachments may contain confidential material for the sole use of the intended recipient. If you are not the intended recipient, please be aware that any disclosure, copying, distribution or use of this e-mail or any attachment is prohibited. If you have received this e-mail in error, please contact the sender and delete all copies.
Thank you for your cooperation
| | - The Matronics Lightning-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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pjdisher(at)bigpond.com
Guest
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| Posted: Thu Sep 25, 2008 1:26 pm Post subject: CHT |
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Thankyou Ryan and Nick. Nick, I just may have restricted the the air at the very back of the No5 cylinder, I will send a picture for your comment.
Many thanks again Guys,
Pete Disher
[quote][b]
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walt.mefford(at)garmin.co
Guest
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| Posted: Thu Sep 25, 2008 1:45 pm Post subject: CHT |
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Pete,
Odd, my #5 is also running hotter than the others. However, getting the idle set correctly did make a big difference.
Walt Mefford
N881WP (#55)
From: owner-lightning-list-server(at)matronics.com [mailto:owner-lightning-list-server(at)matronics.com] On Behalf Of Peter and Jan Disher
Sent: Thursday, September 25, 2008 2:25 PM
To: lightning-list(at)matronics.com
Subject: CHT
Thankyou Ryan and Nick. Nick, I just may have restricted the the air at the very back of the No5 cylinder, I will send a picture for your comment.
Many thanks again Guys,
Pete Disher
| Quote: | | http://www.matronics.com/Navigator?Lightning-List |
0123456789
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Thank you for your cooperation [quote][b]
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catalpaaviation(at)wideba
Guest
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| Posted: Thu Sep 25, 2008 2:21 pm Post subject: CHT |
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Hullo Pete, my CHT are between 240 and 330 F, however my EGT is VERY high and I am working on them. To answer your question, first place the “v” plates below, I have also made glass ramps to the inlets to get a better air flow, last week I also did the sump mode and that made my oil temp acceptable, now if I could just get the EGT’s down
Anthony Morrison kit 32
--
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Wayne Lenox
Joined: 07 Jan 2008
Posts: 75
Location: Arizona in the winter
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| Posted: Thu Sep 25, 2008 2:45 pm Post subject: CHT |
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Anthony
ADD more fuel (bigger jets in carb)
Wayne L
N2483G
-- "Catalpa aviation" <catalpaaviation(at)wideband.net.au> wrote:
Hullo Pete, my CHT are between 240 and 330 F, however my EGT is VERY high and I am working on them. To answer your question, first place the “v” plates below, I have also made glass ramps to the inlets to get a better air flow, last week I also did the sump mode and that made my oil temp acceptable, now if I could just get the EGT’s down<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
Anthony Morrison kit 32
--
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dashvii(at)hotmail.com
Guest
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| Posted: Thu Sep 25, 2008 3:03 pm Post subject: CHT |
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What Wayne said C your engine is running too lean and needs a bigger jet. You'll see your EGT's drop a lot with a little adjustment. Just curious C what numbers are you seeing?
From: waynelenox(at)juno.comDate: Thu C 25 Sep 2008 22:40:46 +0000To: lightning-list(at)matronics.comSubject: RE: CHT
Anthony
ADD more fuel (bigger jets in carb)
Wayne L
N2483G-- "Catalpa aviation" <catalpaaviation(at)wideband.net.au> wrote:
Hullo Pete C my CHT are between 240 and 330 F C however my EGT is VERY high and I am working on them. To answer your question C first place the “v” plates below C I have also made glass ramps to the inlets to get a better air flow C last week I also did the sump mode and that made my oil temp acceptable C now if I could just get the EGT’s down
Anthony Morrison kit 32
--
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pjdisher(at)bigpond.com
Guest
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| Posted: Thu Sep 25, 2008 5:39 pm Post subject: CHT |
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Hi Brian, My EGT range from 1100 to 1300 and fairly even
Pete Disher
[quote] ---
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ryan(at)greenlandings.com
Guest
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| Posted: Thu Sep 25, 2008 6:03 pm Post subject: CHT |
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Pete,I think that you may need to decrease the size of your jet. You should get something in the mid to low 1300 on takeoff and about 1400 to 1420 in cruise. This will give you optimal fuel burn and clean spark plugs. I think if you continue to see those number your engine will run rough and you will foul the plugs.RyanGreen Landings
Sent from my BlackBerry® smartphone with SprintSpeed
From: "Peter and Jan Disher" <pjdisher(at)bigpond.com>
Date: Fri, 26 Sep 2008 11:36:16 +1000
To: <lightning-list(at)matronics.com>
Subject: Re: Lightning-List: CHT
Hi Brian, My EGT range from 1100 to 1300 and = fairly=20 even
Pete Disher
---
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pjdisher(at)bigpond.com
Guest
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| Posted: Thu Sep 25, 2008 6:50 pm Post subject: CHT |
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Thanks Ryan, I'm using a "Revmaster" carby 40mm and it is very easy to adjust mixture, even from the cockpit, I could certainly do that.
Earlier I had it adjusted, from the cockpit, where from full rich, pulling the mixture back would increase rpm to idle cut-off. I have since adjusted where rpm does not increase when leaning to idle cut-off.
Thanks again, I will aim to increase the EGT a bit.
Pete Disher
[quote] ---
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pjdisher(at)bigpond.com
Guest
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| Posted: Thu Sep 25, 2008 7:11 pm Post subject: CHT |
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G'Day Anthony, would like to talk to , could you email your phone number.
Pete Disher
- Original Message -----
[quote] From: Catalpa aviation (catalpaaviation(at)wideband.net.au)
To: lightning-list(at)matronics.com (lightning-list(at)matronics.com)
Sent: Friday, September 26, 2008 8:18 AM
Subject: RE: CHT
Hullo Pete, my CHT are between 240 and 330 F, however my EGT is VERY high and I am working on them. To answer your question, first place the “v” plates below, I have also made glass ramps to the inlets to get a better air flow, last week I also did the sump mode and that made my oil temp acceptable, now if I could just get the EGT’s down
Anthony Morrison kit 32
-----Original Message-----
From: owner-lightning-list-server(at)matronics.com [mailto:owner-lightning-list-server(at)matronics.com] On Behalf Of ryan gross
Sent: Thursday, 25 September 2008 10:32 PM
To: lightning-list(at)matronics.com
Subject: Re: Lightning-List: CHT
Pete,
It is not advised to do much taxi testing or ground run ups with your new Jabiru engine. I have installed more than 20 jabiru engines and have found that within the first few hours the engine is very vulnerable. At Green Landings in the first days of taxi testing we can only get about 2 to 3 runs down the runway without getting the temperature to hot. If i see the temps rising quickly i will shut down the engine and allow it to cool for an hour or so. Remember heat will build even after the engine is shut off. Also never run the engine on an open cowled system. This will also have the cylinder hot in mins. The best thing to do is find out if your aircraft is stable at just above take off speed and head to the sky. After the climb the engine will cool in level flight.
Once you have about 10-15 hours and change your oil at around 25 you will see very noticeable temp differences. After the break in period you will be able to run your Jabiru engine on the ground without any problems. Another thing never try to allow your engine to exceed 380, 390 is max.
Have faith, I just needs to break in!!
Ryan Gross
Green Landings Flight Center, Inc
SkyRanger Aircraft
Arion Lightning
304-754-6010
-----Original Message-----
From: "Peter and Jan Disher" <pjdisher(at)bigpond.com>
To: <lightning-list(at)matronics.com>
Date: Thu, 25 Sep 2008 16:46:29 +1000
Subject: CHT
To all,
Could someone please help me with some options.
While holding the aircraft into a breeze about 10mph and also taxing my CHTs are 1-327, 2-330, 3-368, 4-360, 5-427, 6-372 F
How can I reduce the temperature on No 5 (at) 427F ?
I have switched the probe from another cylinder and probes are OK.
I also have the cowlings top and bottom fitted.
I have the V plates on top of the cylinders, should they be underneath the cylinders, would this help?
Would welcome any ideas, anyone.
I'm loosing faith in this JABIRU engine.
Many thanks,
Pete Disher
VH-PDI
Kit 30
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catalpaaviation(at)wideba
Guest
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| Posted: Thu Sep 25, 2008 8:34 pm Post subject: CHT |
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Have tried bigger jets to no avail; have lifted the floats as high as I can for next flight, if it improves will go to larger jets. Numbers are up to 1500F in cruise (2950rpm)
I have 285 needle and 255 main in at the moment, tried 290 needle and 280 main, only ran well with carby heat on no matter what jets were fitted. Beats me!
Anthony
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catalpaaviation(at)wideba
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| Posted: Thu Sep 25, 2008 8:36 pm Post subject: CHT |
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Pete my phone number is 0407 804 503
Anthony
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dashvii(at)hotmail.com
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| Posted: Fri Sep 26, 2008 3:03 am Post subject: CHT |
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Anthony C
With those numbers you definately need to find a way to enrichen the mixture. When you apply carb heat you are making the engine run richer so that's a further indication. Nick might be able to provide you some tips if you're having troubles. Brian W.
From: catalpaaviation(at)wideband.net.au
To: lightning-list(at)matronics.com
Subject: RE: CHT
Date: Fri C 26 Sep 2008 14:29:10 +1000
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Have tried bigger jets to no avail; have lifted the floats as high as I can for next flight C if it improves will go to larger jets. Numbers are up to 1500F in cruise (2950rpm)
I have 285 needle and 255 main in at the moment C tried 290 needle and 280 main C only ran well with carby heat on no matter what jets were fitted. Beats me!
Anthony
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N1BZRich(at)AOL.COM
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| Posted: Fri Sep 26, 2008 3:15 am Post subject: CHT |
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Anthony,
Are you flying your "jet" with the gear leg fairings and wheel pants on? How "clean" the airframe is will made a difference on how hard the engine has to work. Any carb jet changing should probably be done after you have the airframe cleaned up and proped like you expect the final aircraft configuration to be. I am expecting to have to re-jet when I start using the 62 - 60 pitch prop we are waiting on.
Blue Skies,
Buz
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info(at)flylightning.net
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| Posted: Fri Sep 26, 2008 5:44 am Post subject: CHT |
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Anthony,
Normally in a lightning equipped with fairings and a prop which will turn 2700 on takeoff roll you will get also about 3200 WOT in level than you can expect to use a 245-250 main and a 276-178 needle jet. Most every one over here needs that jetting, the ones that don’t usually do not have fairings or a significantly different prop load. Send me some number to help. I would like to see RPM after brake release and 5sec roll. Than RPM (at) a 100mph climb ( 90knts) (at) WOT. Also EGTs at these points. Than 2850 Cruise and EGTS, and WOT achieved straight and level. This will help determine proper tuning.
Nick Otterback
Arion Aircraft, LLC
From: owner-lightning-list-server(at)matronics.com [mailto:owner-lightning-list-server(at)matronics.com] On Behalf Of Catalpa aviation
Sent: Thursday, September 25, 2008 11:29 PM
To: lightning-list(at)matronics.com
Subject: [Norton AntiSpam] RE: CHT
Have tried bigger jets to no avail; have lifted the floats as high as I can for next flight, if it improves will go to larger jets. Numbers are up to 1500F in cruise (2950rpm)
I have 285 needle and 255 main in at the moment, tried 290 needle and 280 main, only ran well with carby heat on no matter what jets were fitted. Beats me!
Anthony
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catalpaaviation(at)wideba
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| Posted: Fri Oct 03, 2008 8:05 pm Post subject: CHT |
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Hullo Nick
Today did some tests
Aircraft gross weight 542 kg, moment 859mm, prop Sensenich 62x58, all wheel and gear fairings fitted.
QNH 1017, temp 12C, dew point 8C, humidity 79%, alt 1,500ft
Take off after 5 seconds 2750, egt 1500F, cht 300F
S&L 2750, egt 1500F, cht300F, oil temp 145F, 120knots
S&L WOT (3210) egt 1500F, cht 280F, oil temp 175F, 140knots+
S&L 2900 above temps 130-135 knots cruise, and felt good
Notes: at cruise pull on carby heat, rpm drops 50 and egt slight drop, choke on, egt rise and no noticeable rpm change
Carby standard jets, flout height, mixture out 3 turns
I have fitted elevator trim and this was first flight without bungies. I am a VERY happy chap with the result, a must do change. Gone is the super light elevator that felt like it was in control and replaced with a trim able and nice felling elevator. Next job remove elevator and trim and paint.
Regards
Anthony Morrison
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