Today's Message Index:
----------------------
1. 09:37 AM - CO in the cockpit of a Zodiac 601XL-B (SIDESLIP)
2. 09:40 AM - Re: CO in the cockpit of a Zodiac 601XL-B (SIDESLIP)
3. 11:37 AM - Re: CO in the cockpit of a Zodiac 601XL-B (Mark Hubelbank)
4. 01:49 PM - Re: CO in the cockpit of a Zodiac 601XL-B ()
5. 02:22 PM - Re: CO in the cockpit of a Zodiac 601XL-B (SIDESLIP)
Message 1
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| Subject: | CO in the cockpit of a Zodiac 601XL-B |
Need some help guys. I'm getting VERY high CO readings in the cockpit. Especially
in slow flight. Rotax 912ULS powered. I get CO entering even at 110kts. Any
ideas? I plugged off my cabin heat and It made no difference. Exhaust re-sealed
at the joints. Noticed the CO increased when I re-sealed the two stacks out
of the main muffler. I'm lost.....
--------
C-GYXQ. 912ULS. 601XL-B
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http://forums.matronics.com/viewtopic.php?p=405351#405351
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http://forums.matronics.com//files/image_131.jpg
Message 2
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| Subject: | Re: CO in the cockpit of a Zodiac 601XL-B |
Here is the stacks.
--------
C-GYXQ. 912ULS. 601XL-B
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=405352#405352
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Message 3
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| Subject: | Re: CO in the cockpit of a Zodiac 601XL-B |
Actually, I had a Jabiru 3300 and had the same problem. Even with
everything well sealed in the engine area, it was a problem. I found all
the CO was coming back through the tail. Putting a CO monitor in back of
the seats produced off the scale numbers.
I was going to seal all the gaps around the tail, there is a big
opening around the elevator where I believe most of it comes in through.
I have switched engines to a Honda/Viking and the problem has gone away.
I expect it is 90% because the Honda burns so much cleaner that the CO
blown by the tail is almost non existent compared to a Jabiru.
Before this is taken as an endorsement of the Honda/Viking, note
that I had to do a lot of modification to that installation.
On 07/26/2013 12:36 PM, SIDESLIP wrote:
>
> Need some help guys. I'm getting VERY high CO readings in the cockpit. Especially
in slow flight. Rotax 912ULS powered. I get CO entering even at 110kts. Any
ideas? I plugged off my cabin heat and It made no difference. Exhaust re-sealed
at the joints. Noticed the CO increased when I re-sealed the two stacks out
of the main muffler. I'm lost.....
>
> --------
> C-GYXQ. 912ULS. 601XL-B
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=405351#405351
>
>
> Attachments:
>
> http://forums.matronics.com//files/image_166.jpg
> http://forums.matronics.com//files/image_131.jpg
>
>
--
Mark Hubelbank
NorthEast Monitoring
2 Clock Tower Place
Suite 555
Maynard, MA, 01754 - USA
mhubel@nemon.com
978-443-3955
Message 4
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| Subject: | Re: CO in the cockpit of a Zodiac 601XL-B |
You might consider adding a pair of pipe extensions (I assume you have
two exhaust pipes) set to release the exhaust somewhat lower, and more
aft, just to see if it helps. Otherwise, your choices would be limited
to finding and sealing all possible leaks, or wind-pressurizing the
cockpit and blowing everything aft. Either way, until you solve it, keep
your flights short. CO2 sneaks up on you.
Paul R
----- Original Message -----
From: Mark Hubelbank<mailto:mhubel@nemon.com>
To: zenith601-list@matronics.com<mailto:zenith601-list@matronics.com>
Sent: Friday, July 26, 2013 1:37 PM
Subject: Re: Zenith601-List: CO in the cockpit of a Zodiac 601XL-B
<mhubel@nemon.com<mailto:mhubel@nemon.com>>
Actually, I had a Jabiru 3300 and had the same problem. Even with
everything well sealed in the engine area, it was a problem. I found
all
the CO was coming back through the tail. Putting a CO monitor in back
of
the seats produced off the scale numbers.
I was going to seal all the gaps around the tail, there is a big
opening around the elevator where I believe most of it comes in
through.
I have switched engines to a Honda/Viking and the problem has gone
away.
I expect it is 90% because the Honda burns so much cleaner that the CO
blown by the tail is almost non existent compared to a Jabiru.
Before this is taken as an endorsement of the Honda/Viking, note
that I had to do a lot of modification to that installation.
On 07/26/2013 12:36 PM, SIDESLIP wrote:
<Chad2007@rogers.com<mailto:Chad2007@rogers.com>>
>
> Need some help guys. I'm getting VERY high CO readings in the
cockpit. Especially in slow flight. Rotax 912ULS powered. I get CO
entering even at 110kts. Any ideas? I plugged off my cabin heat and It
made no difference. Exhaust re-sealed at the joints. Noticed the CO
increased when I re-sealed the two stacks out of the main muffler. I'm
lost.....
>
> --------
> C-GYXQ. 912ULS. 601XL-B
>
>
>
>
> Read this topic online here:
>
>
http://forums.matronics.com/viewtopic.php?p=405351#405351<http://forums
.matronics.com/viewtopic.php?p=405351#405351>
>
>
>
>
> Attachments:
>
>
http://forums.matronics.com//files/image_166.jpg<http://forums.matronics.
com//files/image_166.jpg>
>
http://forums.matronics.com//files/image_131.jpg<http://forums.matronics.
com//files/image_131.jpg>
>
>
>
>
>
>
>
>
>
--
Mark Hubelbank
NorthEast Monitoring
2 Clock Tower Place
Suite 555
Maynard, MA, 01754 - USA
mhubel@nemon.com<mailto:mhubel@nemon.com>
978-443-3955
http://www.matronics.com/Navigator?Zenith601-List<http://www.matronics.co
m/Navigator?Zenith601-List>
http://www.matronics.com/contribution<http://www.matronics.com/contributi
on>
Message 5
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| Subject: | Re: CO in the cockpit of a Zodiac 601XL-B |
Here is where the pipes sit. You think they need to be further back and down?
Chad
--------
C-GYXQ. 912ULS. 601XL-B
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=405368#405368
Attachments:
http://forums.matronics.com//files/image_211.jpg
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