 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
Ralph B
Joined: 14 Apr 2007
Posts: 367
Location: Mound Minnesota
|
 Posted: Thu Feb 07, 2008 8:13 am Post subject: my old muffler |
 |
|
After 21 years of flying, I'm going to finally have to replace the single-jointed muffler on the engine. It's been welded twice before and now it's cracked again. I have a new double-jointed muffler and never put it on for two reasons. One, it has two EGT sender ports and I don't want to add another EGT gauge on my panel. Second, the muffler end goes straight out instead of the exhaust pointing up like this one does. I'm afraid the exhaust gases going out could weaken the fiberglass Ivo prop, over time, as the prop is only a few inches from the end of the muffler exhaust (I don't have a prop extension). What I can do, is get the curved part cut out of the old muffler and welded on to the new one. That takes care of that problem (or get a prop extension).
I thought about tying the EGT senders together. Has anyone else done this? I don't see any problem with this. If one sends out more voltage than the other, it would respond on the single EGT instrument I have, thereby indicting a high EGT if either of the cylinders are too hot.
| | - The Matronics Kolb-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?Kolb-List |
|
_________________
Ralph B
Kolb Kolbra 912uls
N20386
550 hours |
|
| Back to top |
|
 |
bransom(at)ucdavis.edu
Guest
|
| Posted: Thu Feb 07, 2008 9:12 am Post subject: my old muffler |
|
|
Hi Ralph,
I had the same issue on EGT -- originally one probe at the Y and one
gauge. Later determined I much preferred knowing EGT separately, so put
in a second probe. My solution to leaving it one gauge was to add a
small switch. I mounted it just under the throttle. Fwd is the fwd EGT
probe, middle is a neither, Rear is the rear EGT probe. I made myself
the habit of leaving that switch in the rear position, other than when
checking front EGT, to avoid inadvertently switching my ignition switch
from fwd to rear (OFF) instead. My ignition sw is bigger and mounted a
foot in front, but brain farts happen. Overall the solution has worked
well, although that is also with the recognition that a digital EIS with
alarm thresholds woulda been best.
-Ben
Ralph B wrote:
| Quote: |
After 21 years of flying, I'm going to finally have to replace the single jointed muffler on the engine. It's been welded twice before and now it's cracked again. I have a new double-jointed muffler and never put it on for two reasons. One, it has two EGT sender ports and I don't want to add another EGT gauge on my panel. Second, the muffler end goes straight out instead of the exhaust pointing up like this one does. I'm afraid the exhaust gases going out could weaken the fiberglass Ivo prop, over time, as the prop is only a few inches from the end of the muffler exhaust (I don't have a prop extension). What I can do, is get the curved part cut out of the old muffler and welded on to the new one. That takes care of that problem (or I could get a prop extension).
I thought about tying the EGT senders together. Has anyone else done this? I don't see any problem with this. If one sends out more voltage than the other, it would respond on the single EGT instrument I have, thereby indicting a high EGT if either of the cylinders are too hot.
--------
Ralph B
Original Firestar
N91493 E-AB
21 years flying it
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=162832#162832
|
| | - The Matronics Kolb-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?Kolb-List |
|
|
|
| Back to top |
|
|
Ralph B
Joined: 14 Apr 2007
Posts: 367
Location: Mound Minnesota
|
| Posted: Thu Feb 07, 2008 9:41 am Post subject: Re: my old muffler |
|
|
I thought about a switch too, but if the engine gets hot, it will do it when the switch isn't switched. I'm going to try and "Y" the two senders together and use a cig lighter to see what happens. This seems the easiest way to do this without adding another gauge.
| | - The Matronics Kolb-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?Kolb-List |
|
_________________
Ralph B
Kolb Kolbra 912uls
N20386
550 hours |
|
| Back to top |
|
|
by0ung(at)brigham.net
Guest
|
| Posted: Thu Feb 07, 2008 11:15 am Post subject: my old muffler |
|
|
I thought about a switch too, but if the engine gets hot, it will do it when
the switch isn't switched. I'm going to try and "Y" the two senders together
and use a cig lighter to see what happens. This seems the easiest way to do
this without adding another gauge.
| Quote: | >>>>>>>>>>>>>>>>>>>
|
Put in a small timer with a double pole, double throw relay,,, and have it
go from one to the other every 10 sec or so. You could have it light a led
to indicate front or back reading.
Boyd
| | - The Matronics Kolb-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?Kolb-List |
|
|
|
| Back to top |
|
|
ElleryWeld(at)aol.com
Guest
|
| Posted: Thu Feb 07, 2008 11:15 am Post subject: my old muffler |
|
|
You could buy a double in one gauge for you EGT that way you wont have to cut another hole in your panel Just a thought
Ellery in Maine
do not archive
In a message dated 2/7/2008 11:16:35 A.M. Eastern Standard Time, ul15rhb(at)juno.com writes:
| Quote: | --> Kolb-List message posted by: "Ralph B" <ul15rhb(at)juno.com>
After 21 years of flying, I'm going to finally have to replace the single jointed muffler on the engine. It's been welded twice before and now it's cracked again. I have a new double-jointed muffler and never put it on for two reasons. One, it has two EGT sender ports and I don't want to add another EGT gauge on my panel. Second, the muffler end goes straight out instead of the exhaust pointing up like this one does. I'm afraid the exhaust gases going out could weaken the fiberglass Ivo prop, over time, as the prop is only a few inches from the end of the muffler exhaust (I don't have a prop extension). What I can do, is get the curved part cut out of the old muffler and welded on to the new one. That takes care of that problem (or I could get a prop extension).
I thought about tying the EGT senders together. Has anyone else done this? I don't see any problem with this. If one sends out more voltage than the other, it would respond on the single EGT instrument I have, thereby indicting a high EGT if either of the cylinders are too hot.
--------
Ralph B
Original Firestar
N91493 E-AB
21 years flying it
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=162832#162832
|
Who's never won? Biggest Grammy Award surprises of all time on AOL Music.
[quote][b]
| | - The Matronics Kolb-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?Kolb-List |
|
|
|
| Back to top |
|
|
Ralph B
Joined: 14 Apr 2007
Posts: 367
Location: Mound Minnesota
|
| Posted: Thu Feb 07, 2008 11:40 am Post subject: Re: my old muffler |
|
|
| ElleryWeld(at)aol.com wrote: | | You could buy a double in one gauge for you EGT that way you wont have to cut another hole in your panel Just a thought |
I thought about that too, but I have a dual tach and EGT. If I get a dual EGT, I will have to make a hole for another tach.
| | - The Matronics Kolb-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?Kolb-List |
|
_________________
Ralph B
Kolb Kolbra 912uls
N20386
550 hours |
|
| Back to top |
|
|
olendorf
Joined: 06 Jul 2006
Posts: 140
Location: Schenectady, NY USA
|
| Posted: Thu Feb 07, 2008 8:33 pm Post subject: Re: my old muffler |
|
|
Wouldn't connecting the two wires together show the average of the temps, not the maximum of either?
I don't think that will work. Just use the one egt hole and plug the other one.
| | - The Matronics Kolb-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?Kolb-List |
|
_________________
Scott Olendorf
Original Firestar, Rotax 447, Powerfin prop
Schenectady, NY
http://sites.google.com/site/kolbfirestar/ |
|
| Back to top |
|
|
slyck(at)frontiernet.net
Guest
|
| Posted: Thu Feb 07, 2008 9:55 pm Post subject: my old muffler |
|
|
If they are in parallel they should show an average.
BB
On 7, Feb 2008, at 11:33 PM, olendorf wrote:
| | - The Matronics Kolb-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?Kolb-List |
|
|
|
| Back to top |
|
|
Ralph B
Joined: 14 Apr 2007
Posts: 367
Location: Mound Minnesota
|
| Posted: Fri Feb 08, 2008 6:17 am Post subject: Re: my old muffler |
|
|
On 7, Feb 2008, at 11:33 PM, olendorf wrote: | Quote: | Wouldn't connecting the two wires together show the average of the temps, not the maximum of either? I don't think that will work. Just use the one egt hole and plug the other one.
Scott Olendorf
Original Firestar, Rotax 447, Powerfin prop
Schenectady, NY
http://KolbFirestar.googlepages.com
|
Thanks Scott and others. You are right, it will show an average. I will drill a single hole and plug the two other EGT ports. This worked for 21 years on the other muffler and will work here too.
| | - The Matronics Kolb-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?Kolb-List |
|
_________________
Ralph B
Kolb Kolbra 912uls
N20386
550 hours |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
