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Anyone check for carbon monoxide?

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Tom McCarthy

Joined: 24 Feb 2011
Posts: 15
Location: 61C

Posted: Tue Oct 04, 2011 1:01 pm Post subject: Anyone check for carbon monoxide?

I put my back windows on the Slingshot last week, and soon after thought I could smell something while flying.  I have a battery powered carbon monoxide detector in my Zenith, so I took it flying and was surprised to find a low level that was constant inside.  I thought it was the breather from the oil container (HKS), so I rerouted it out through the bottom of the boom tube, but did not get better. My exhaust runs down along the back of the fuselage and exits on an angle just above the boom tube. I wonder if a vacuum is occurring and somehow pulling exhaust forward? 

How many people have checked for carbon monoxide?  It sure is not something I thought to be concerned with having a pusher behind me.  Any thoughts would be appreciated.



Tom McCarthy

Zenith 601HD

Kolb Slingshot

Kolb Firestar

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Tom McCarthy
N514TM Zenith 601HD
N414TM Kolb FireStar 1
N863GB Kolb Slingshot

elleryweld(at)aol.com
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Posted: Tue Oct 04, 2011 2:13 pm Post subject: Anyone check for carbon monoxide?

every Kolb I have flown always had a draft coming in through the boom tube you could be getting exhaust through it  but you 

   can slow it down by placing a big piece of foam rubber inside the tube near the tail end 

 

 

     Ellery Batchelder Jr.

 

 

 

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Thom Riddle

Joined: 10 Jan 2006
Posts: 1597
Location: Buffalo, NY, USA (9G0)

Posted: Tue Oct 04, 2011 2:22 pm Post subject: Anyone check for carbon monoxide?

Tom,

My engine and exhaust are different than yours.  I've never checked the CO in my Slingshot but ALWAYS fly with the vents in the aft windows open in such a way that air is sucked out through those vents, to avoid any possible CO accumulation. In warm weather, I also pressurize the cabin by opening the forward vents such that they grab the airflow directing it toward me, plus adding positive pressure to the cabin.

  



  

  On Tue, Oct 4, 2011 at 4:58 PM, McCarthy Tom <mccarthy(at)jefnet.com (mccarthy(at)jefnet.com)> wrote:

[quote]  --> Kolb-List message posted by: McCarthy Tom <mccarthy(at)jefnet.com (mccarthy(at)jefnet.com)>

 

 I put my back windows on the Slingshot last week, and soon after thought I could smell something while flying.  I have a battery powered carbon monoxide detector in my Zenith, so I took it flying and was surprised to find a low level that was constant inside.  I thought it was the breather from the oil container (HKS), so I rerouted it out through the bottom of the boom tube, but did not get better. My exhaust runs down along the back of the fuselage and exits on an angle just above the boom tube. I wonder if a vacuum is occurring and somehow pulling exhaust forward?

   How many people have checked for carbon monoxide?  It sure is not something I thought to be concerned with having a pusher behind me.  Any thoughts would be appreciated.

 

 Tom McCarthy

 Zenith 601HD

 Kolb Slingshot

 Kolb Firestar

 

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Thom Riddle
Buffalo, NY (9G0)

Don't worry about old age... it doesn't last very long.
- Anonymous

zeprep251(at)aol.com
Guest

Posted: Wed Oct 05, 2011 11:49 am Post subject: Anyone check for carbon monoxide?

The air comes up the tube like you have a leaf blower back there.I have a 6" thick foam plug in my boom tube.That handles it.

 G.Aman Mk3c jabiru

 

   

  

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slyck(at)frontiernet.net
Guest

Posted: Wed Oct 05, 2011 1:54 pm Post subject: Anyone check for carbon monoxide?

The configuration of your cabin has something to do with it.  The shuttlecock shape (birdie in polite society) createsall kinds of strange airflows.  In my case I was smelling oil sump fumes which I 95% eliminated by routing a vent line to just behind 

and higher than the prop flange.  Those fumes get very well distributed.

BB

MkIII, suzuki



On 5, Oct 2011, at 3:46 PM, Gary Aman wrote:

[quote]   The air comes up the tube like you have a leaf blower back there.I have a 6" thick foam plug in my boom tube.That handles it.

 G.Aman Mk3c jabiru

 

   

  

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Tom McCarthy

Joined: 24 Feb 2011
Posts: 15
Location: 61C

Posted: Sat Oct 08, 2011 7:42 am Post subject: Anyone check for carbon monoxide?

I just want to send a huge thank you out to all who responded to my carbon monoxide issue.  I flew the other day to confirm that it was coming from the boom tube, and whoever likened it to a leaf blower was dead on.  I make up a thick tight fitting closed cell foam piece, and inserted it from the cockpit side, and flew for an hour today, with the carbon monoxide detector was never reading over 0, and no more odors inside.  I think the little Kidde battery operated digital display carbon monoxide detector that I have could be a life saver for others as well.  This is important to me because I fly just as much in the winter as I do in the summer, and like to seal things up as much as possible.  I recently finished adding my cockpit heat plenum to the oil cooler, and it works great. I am now ready to land on all the frozen lakes in comfort.  



Thanks again,



Tom McCarthy

Zenith 601HD

Kolb Slingshot

Kolb Firestar



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Tom McCarthy
N514TM Zenith 601HD
N414TM Kolb FireStar 1
N863GB Kolb Slingshot

Thom Riddle

Joined: 10 Jan 2006
Posts: 1597
Location: Buffalo, NY, USA (9G0)

Posted: Sat Oct 08, 2011 8:01 am Post subject: Anyone check for carbon monoxide?

Tom,

Now that you have confirmed there is a big draft from the tube, even on Slingshots, I guess it is time to take a look at mine. As I said before, I never noticed any draft but that doesn't mean there is not one. Thanks for sharing your experience.

  

Thom in Buffalo

  



On Sat, Oct 8, 2011 at 11:40 AM, McCarthy Tom <mccarthy(at)jefnet.com (mccarthy(at)jefnet.com)> wrote:

[quote]  I just want to send a huge thank you out to all who responded to my carbon monoxide issue.  I flew the other day to confirm that it was coming from the boom tube, and whoever likened it to a leaf blower was dead on.  I make up a thick tight fitting closed cell foam piece, and inserted it from the cockpit side, and flew for an hour today, with the carbon monoxide detector was never reading over 0, and no more odors inside.  I think the little Kidde battery operated digital display carbon monoxide detector that I have could be a life saver for others as well.  This is important to me because I fly just as much in the winter as I do in the summer, and like to seal things up as much as possible.  I recently finished adding my cockpit heat plenum to the oil cooler, and it works great. I am now ready to land on all the frozen lakes in comfort.    



Thanks again,



Tom McCarthy

Zenith 601HD

  Kolb Slingshot

Kolb Firestar



  

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Thom Riddle
Buffalo, NY (9G0)

Don't worry about old age... it doesn't last very long.
- Anonymous

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