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rv10rob(at)gmail.com
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 Posted: Wed Mar 20, 2013 7:56 pm Post subject: Disabling front cabin heat? |
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Has anyone disabled the front cabin heat in their RV-10? I'm finding that even on really cold days, I only need partial rear heat to keep things warm, and I never use the front heat, since I want to minimize heat behind the panel. In the warm summer months, I don't want all that hot air blowing on the firewall. I don't think I can just disconnect the air hose to the muff, since the exhaust pipe would probably get too hot. If nothing else, I figure I could disconnect the air hose between the muff and firewall at the firewall and just point it down toward the cowl exit. Of course, I would have to seal the hole in the firewall.
Anyone have any suggestions? Thanks...
-Rob
--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
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flying-nut(at)cfl.rr.com
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| Posted: Thu Mar 21, 2013 3:23 am Post subject: Disabling front cabin heat? |
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On 3/20/2013 11:54 PM, Rob Kochman wrote:
| Quote: | Has anyone disabled the front cabin heat in their RV-10? I'm finding that even on really cold days, I only need partial rear heat to keep things warm, and I never use the front heat, since I want to minimize heat behind the panel. In the warm summer months, I don't want all that hot air blowing on the firewall. I don't think I can just disconnect the air hose to the muff, since the exhaust pipe would probably get too hot. If nothing else, I figure I could disconnect the air hose between the muff and firewall at the firewall and just point it down toward the cowl exit. Of course, I would have to seal the hole in the firewall.
Anyone have any suggestions? Thanks...
|
You can block off some of the hole going to the heat muff with metal-tape for winter and cover it all during summer. Or you can route around the heat muff during summer so you get cool air through the heat vents. I wouldn't worry about overheating that exhaust pipe ......
Linn
[quote]
-Rob
--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
No virus found in this message.
Checked by AVG - www.avg.com
03/20/13 [b]
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nukeflyboy
Joined: 05 Jan 2008
Posts: 162
Location: Granbury, TX
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| Posted: Thu Mar 21, 2013 4:29 am Post subject: Re: Disabling front cabin heat? |
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I have disabled mine for the summer months too. I disconnected the SCAT tube so hot air no longer blows on the firewall. I also blocked the vent adapter at the baffle to prevent any bypass air flow around the cylinders. It helped a bit and I would not worry about the exhaust pipes.
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Dave Moore
RV-6 built and sold
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jesse(at)saintaviation.co
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| Posted: Thu Mar 21, 2013 4:32 am Post subject: Disabling front cabin heat? |
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Rob,
Not all exhaust pipes even have heat muffs. I can't imagine it getting too hot there and being ok with the temperature along the rest of the exhaust. I'd leave it off completely. Instead, you might hook it up as normal and just cover over the hole in the baffles so you could easily add it if you want to.
Jesse SaintI-TEC, Inc.
jesse(at)itecusa.org (jesse(at)itecusa.org)
www.itecusa.org
www.mavericklsa.com
C: 352-427-0285
O: 352-465-4545
F: 815-377-3694
Sent from my iPhone
On Mar 20, 2013, at 11:54 PM, Rob Kochman <rv10rob(at)gmail.com (rv10rob(at)gmail.com)> wrote:
[quote]Has anyone disabled the front cabin heat in their RV-10? I'm finding that even on really cold days, I only need partial rear heat to keep things warm, and I never use the front heat, since I want to minimize heat behind the panel. In the warm summer months, I don't want all that hot air blowing on the firewall. I don't think I can just disconnect the air hose to the muff, since the exhaust pipe would probably get too hot. If nothing else, I figure I could disconnect the air hose between the muff and firewall at the firewall and just point it down toward the cowl exit. Of course, I would have to seal the hole in the firewall.
Anyone have any suggestions? Thanks...
-Rob
--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
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rv10rob(at)gmail.com
Guest
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| Posted: Thu Mar 21, 2013 5:45 am Post subject: Disabling front cabin heat? |
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Thanks, guys... my concern is that with no airflow into the muff, it's acting as an insulator on the exhaust pipe. Perhaps it's nothing to worry about, though.
-Rob
On Thu, Mar 21, 2013 at 5:32 AM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
| Quote: | Rob,
Not all exhaust pipes even have heat muffs. I can't imagine it getting too hot there and being ok with the temperature along the rest of the exhaust. I'd leave it off completely. Instead, you might hook it up as normal and just cover over the hole in the baffles so you could easily add it if you want to.
Jesse SaintI-TEC, Inc.
jesse(at)itecusa.org (jesse(at)itecusa.org)
www.itecusa.org
www.mavericklsa.com
C: [url=tel:352-427-0285]352-427-0285[/url]
O: [url=tel:352-465-4545]352-465-4545[/url]
F: [url=tel:815-377-3694]815-377-3694[/url]
Sent from my iPhone
On Mar 20, 2013, at 11:54 PM, Rob Kochman <rv10rob(at)gmail.com (rv10rob(at)gmail.com)> wrote:
| Quote: | Has anyone disabled the front cabin heat in their RV-10? I'm finding that even on really cold days, I only need partial rear heat to keep things warm, and I never use the front heat, since I want to minimize heat behind the panel. In the warm summer months, I don't want all that hot air blowing on the firewall. I don't think I can just disconnect the air hose to the muff, since the exhaust pipe would probably get too hot. If nothing else, I figure I could disconnect the air hose between the muff and firewall at the firewall and just point it down toward the cowl exit. Of course, I would have to seal the hole in the firewall.
Anyone have any suggestions? Thanks...
-Rob
--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
|
| Quote: |
get="_blank">http://www.matronics.com/Navigator?RV10-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
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--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
[quote][b]
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bill.peyton
Joined: 19 Sep 2010
Posts: 198
Location: St. Louis, MO
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| Posted: Thu Mar 21, 2013 7:10 am Post subject: Re: Disabling front cabin heat? |
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I spoke with Vetterman on this subject. His advice was adamant, do not just disconnect the air going through the muff. It will get to hot in that one area, but to remove the heat muff completely and install a heat shield on the exhaust tubing as necessary to keep the heat away from the cowl.
It is my belief that the air outlet at the rear of #6 cylinder actually helps the cooling of #6 by not allowing stagnant air to dam at the rear of the baffle. On the right side, #5 is always the hottest cylinder, and the fix is to allow more air to escape either around #5 or through the rear.
| | - The Matronics RV10-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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Bill
WA0SYV
Aviation Partners, LLC |
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Gordon Anderson
Joined: 16 Apr 2012
Posts: 41
Location: Switzerland
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| Posted: Thu Mar 21, 2013 1:01 pm Post subject: Disabling front cabin heat? |
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Rob,
I think your concern is valid. The muff will insulate the exhaust pipe and you may end up with a high temperature gradient between the section outside the muff and inside it, possibly resulting in deformation or cracking after a while. Since cracking would release exhaust into the cowl area, it could become a real concern. Personally I would keep the cool air supply to the muff and dump the hot air coming out of it. Since that is what happens in the stock system when the heater flap valve is closed, I don't follow why you want to disable it at all, rather than just not use it. If I really wanted to disable it I would probably just disconnect the control cable and use Biotherm to seal the flap in the closed position.
Gordon Anderson
On Mar 21, 2013, at 2:44 PM, Rob Kochman wrote:
[quote]Thanks, guys... my concern is that with no airflow into the muff, it's acting as an insulator on the exhaust pipe. Perhaps it's nothing to worry about, though.
-Rob
On Thu, Mar 21, 2013 at 5:32 AM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
| Quote: | Rob,
Not all exhaust pipes even have heat muffs. I can't imagine it getting too hot there and being ok with the temperature along the rest of the exhaust. I'd leave it off completely. Instead, you might hook it up as normal and just cover over the hole in the baffles so you could easily add it if you want to.
Jesse SaintI-TEC, Inc.
jesse(at)itecusa.org (jesse(at)itecusa.org)
www.itecusa.org
www.mavericklsa.com
C: [url=tel:352-427-0285]352-427-0285[/url]
O: [url=tel:352-465-4545]352-465-4545[/url]
F: [url=tel:815-377-3694]815-377-3694[/url]
Sent from my iPhone
On Mar 20, 2013, at 11:54 PM, Rob Kochman <rv10rob(at)gmail.com (rv10rob(at)gmail.com)> wrote:
| Quote: | Has anyone disabled the front cabin heat in their RV-10? I'm finding that even on really cold days, I only need partial rear heat to keep things warm, and I never use the front heat, since I want to minimize heat behind the panel. In the warm summer months, I don't want all that hot air blowing on the firewall. I don't think I can just disconnect the air hose to the muff, since the exhaust pipe would probably get too hot. If nothing else, I figure I could disconnect the air hose between the muff and firewall at the firewall and just point it down toward the cowl exit. Of course, I would have to seal the hole in the firewall.
Anyone have any suggestions? Thanks...
-Rob
--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
|
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--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
| Quote: |
href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
href="http://forums.matronics.com/">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
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rv10rob(at)gmail.com
Guest
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| Posted: Fri Mar 22, 2013 12:47 pm Post subject: Disabling front cabin heat? |
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Thanks, Gordon... the reason I want to disable it is that it dumps hot air directly onto the firewall, which makes the cabin warmer. Anyone know if it's possible to remove the heat muff completely?
On Thu, Mar 21, 2013 at 2:00 PM, Gordon Anderson <mregoan(at)hispeed.ch (mregoan(at)hispeed.ch)> wrote:
| Quote: | Rob,
I think your concern is valid. The muff will insulate the exhaust pipe and you may end up with a high temperature gradient between the section outside the muff and inside it, possibly resulting in deformation or cracking after a while. Since cracking would release exhaust into the cowl area, it could become a real concern. Personally I would keep the cool air supply to the muff and dump the hot air coming out of it. Since that is what happens in the stock system when the heater flap valve is closed, I don't follow why you want to disable it at all, rather than just not use it. If I really wanted to disable it I would probably just disconnect the control cable and use Biotherm to seal the flap in the closed position.
Gordon Anderson
On Mar 21, 2013, at 2:44 PM, Rob Kochman wrote:
| Quote: | Thanks, guys... my concern is that with no airflow into the muff, it's acting as an insulator on the exhaust pipe. Perhaps it's nothing to worry about, though.
-Rob
On Thu, Mar 21, 2013 at 5:32 AM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
| Quote: | Rob,
Not all exhaust pipes even have heat muffs. I can't imagine it getting too hot there and being ok with the temperature along the rest of the exhaust. I'd leave it off completely. Instead, you might hook it up as normal and just cover over the hole in the baffles so you could easily add it if you want to.
Jesse SaintI-TEC, Inc.
jesse(at)itecusa.org (jesse(at)itecusa.org)
www.itecusa.org
www.mavericklsa.com
C: [url=tel:352-427-0285]352-427-0285[/url]
O: [url=tel:352-465-4545]352-465-4545[/url]
F: [url=tel:815-377-3694]815-377-3694[/url]
Sent from my iPhone
On Mar 20, 2013, at 11:54 PM, Rob Kochman <rv10rob(at)gmail.com (rv10rob(at)gmail.com)> wrote:
| Quote: | Has anyone disabled the front cabin heat in their RV-10? I'm finding that even on really cold days, I only need partial rear heat to keep things warm, and I never use the front heat, since I want to minimize heat behind the panel. In the warm summer months, I don't want all that hot air blowing on the firewall. I don't think I can just disconnect the air hose to the muff, since the exhaust pipe would probably get too hot. If nothing else, I figure I could disconnect the air hose between the muff and firewall at the firewall and just point it down toward the cowl exit. Of course, I would have to seal the hole in the firewall.
Anyone have any suggestions? Thanks...
-Rob
--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
|
|
--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
|
| Quote: |
get="_blank">http://www.matronics.com/Navigator?RV10-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
|
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--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
[quote][b]
| | - The Matronics RV10-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?RV10-List |
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flying-nut(at)cfl.rr.com
Guest
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| Posted: Fri Mar 22, 2013 1:36 pm Post subject: Disabling front cabin heat? |
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It took me a while, but I finally understand!!! Which causes my addled brain to ask ..... Did anyone insulate the firewall??? On the engine side or cabin side ..... and with what???
Linn .... so many things to think about ....
On 3/22/2013 4:46 PM, Rob Kochman wrote:
[quote] Thanks, Gordon... the reason I want to disable it is that it dumps hot air directly onto the firewall, which makes the cabin warmer. Anyone know if it's possible to remove the heat muff completely?
On Thu, Mar 21, 2013 at 2:00 PM, Gordon Anderson <mregoan(at)hispeed.ch (mregoan(at)hispeed.ch)> wrote:
| Quote: | Rob,
I think your concern is valid. The muff will insulate the exhaust pipe and you may end up with a high temperature gradient between the section outside the muff and inside it, possibly resulting in deformation or cracking after a while. Since cracking would release exhaust into the cowl area, it could become a real concern. Personally I would keep the cool air supply to the muff and dump the hot air coming out of it. Since that is what happens in the stock system when the heater flap valve is closed, I don't follow why you want to disable it at all, rather than just not use it. If I really wanted to disable it I would probably just disconnect the control cable and use Biotherm to seal the flap in the closed position.
Gordon Anderson
On Mar 21, 2013, at 2:44 PM, Rob Kochman wrote:
| Quote: | Thanks, guys... my concern is that with no airflow into the muff, it's acting as an insulator on the exhaust pipe. Perhaps it's nothing to worry about, though.
-Rob
On Thu, Mar 21, 2013 at 5:32 AM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
| Quote: | Rob,
Not all exhaust pipes even have heat muffs. I can't imagine it getting too hot there and being ok with the temperature along the rest of the exhaust. I'd leave it off completely. Instead, you might hook it up as normal and just cover over the hole in the baffles so you could easily add it if you want to.
Jesse Saint I-TEC, Inc.
jesse(at)itecusa.org (jesse(at)itecusa.org)
www.itecusa.org
www.mavericklsa.com
C: [url=tel:352-427-0285]352-427-0285[/url]
O: [url=tel:352-465-4545]352-465-4545[/url]
F: [url=tel:815-377-3694]815-377-3694[/url]
Sent from my iPhone
On Mar 20, 2013, at 11:54 PM, Rob Kochman <rv10rob(at)gmail.com (rv10rob(at)gmail.com)> wrote:
| Quote: | Has anyone disabled the front cabin heat in their RV-10? I'm finding that even on really cold days, I only need partial rear heat to keep things warm, and I never use the front heat, since I want to minimize heat behind the panel. In the warm summer months, I don't want all that hot air blowing on the firewall. I don't think I can just disconnect the air hose to the muff, since the exhaust pipe would probably get too hot. If nothing else, I figure I could disconnect the air hose between the muff and firewall at the firewall and just point it down toward the cowl exit. Of course, I would have to seal the hole in the firewall.
Anyone have any suggestions? Thanks...
-Rob
--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
|
|
--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
|
|
--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
No virus found in this message.
Checked by AVG - www.avg.com
03/21/13 [b]
| | - The Matronics RV10-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?RV10-List |
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glastar(at)gmx.net
Guest
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| Posted: Fri Mar 22, 2013 1:51 pm Post subject: Disabling front cabin heat? |
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On my other plan, the Glastar we had the same problem, the closed valve
did dump all hot air direct into the upper FW area, nothing we did like.
One of our builders manufactured an enclosure around the heat valve and
that enclosure did dump all air via another scat tube directly to the
exit ramp of the cowling. Now the Glastar has a different type of valve
but I see no reason why one could fabricate a similar thing for the RV-10.
Werner
On 22.03.2013 21:46, Rob Kochman wrote:
| Quote: | Thanks, Gordon... the reason I want to disable it is that it dumps hot
air directly onto the firewall, which makes the cabin warmer.
|
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robin(at)PaintTheWeb.com
Guest
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| Posted: Fri Mar 22, 2013 1:53 pm Post subject: Disabling front cabin heat? |
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| Quote: | No. Anything fwf can oil soaked and potentially interfere with servicing.
Leave as is.
Robin
Linn <flying-nut(at)cfl.rr.com> wrote:
|
It took me a while, but I finally understand!!! Which causes my addled brain to ask ..... Did anyone insulate the firewall??? On the engine side or cabin side ..... and with what???
Linn .... so many things to think about ....
On 3/22/2013 4:46 PM, Rob Kochman wrote:
[quote] Thanks, Gordon... the reason I want to disable it is that it dumps hot air directly onto the firewall, which makes the cabin warmer. Anyone know if it's possible to remove the heat muff completely?
On Thu, Mar 21, 2013 at 2:00 PM, Gordon Anderson <mregoan(at)hispeed.ch (mregoan(at)hispeed.ch)> wrote:
| Quote: | Rob,
I think your concern is valid. The muff will insulate the exhaust pipe and you may end up with a high temperature gradient between the section outside the muff and inside it, possibly resulting in deformation or cracking after a while. Since cracking would release exhaust into the cowl area, it could become a real concern. Personally I would keep the cool air supply to the muff and dump the hot air coming out of it. Since that is what happens in the stock system when the heater flap valve is closed, I don't follow why you want to disable it at all, rather than just not use it. If I really wanted to disable it I would probably just disconnect the control cable and use Biotherm to seal the flap in the closed position.
Gordon Anderson
On Mar 21, 2013, at 2:44 PM, Rob Kochman wrote:
| Quote: | Thanks, guys... my concern is that with no airflow into the muff, it's acting as an insulator on the exhaust pipe. Perhaps it's nothing to worry about, though.
-Rob
On Thu, Mar 21, 2013 at 5:32 AM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
| Quote: | Rob,
Not all exhaust pipes even have heat muffs. I can't imagine it getting too hot there and being ok with the temperature along the rest of the exhaust. I'd leave it off completely. Instead, you might hook it up as normal and just cover over the hole in the baffles so you could easily add it if you want to.
Jesse Saint I-TEC, Inc.
jesse(at)itecusa.org (jesse(at)itecusa.org)
www.itecusa.org
www.mavericklsa.com
C: [url=tel:352-427-0285]352-427-0285[/url]
O: [url=tel:352-465-4545]352-465-4545[/url]
F: [url=tel:815-377-3694]815-377-3694[/url]
Sent from my iPhone
On Mar 20, 2013, at 11:54 PM, Rob Kochman <rv10rob(at)gmail.com (rv10rob(at)gmail.com)> wrote:
| Quote: | Has anyone disabled the front cabin heat in their RV-10? I'm finding that even on really cold days, I only need partial rear heat to keep things warm, and I never use the front heat, since I want to minimize heat behind the panel. In the warm summer months, I don't want all that hot air blowing on the firewall. I don't think I can just disconnect the air hose to the muff, since the exhaust pipe would probably get too hot. If nothing else, I figure I could disconnect the air hose between the muff and firewall at the firewall and just point it down toward the cowl exit. Of course, I would have to seal the hole in the firewall.
Anyone have any suggestions? Thanks...
-Rob
--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
|
|
--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
|
|
--
Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
No virus found in this message.
Checked by AVG - www.avg.com
03/21/13
p://www.matronics.com/Navigator?RV10-List
ics.com
.matronics.com/contribution
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carl.froehlich(at)verizon
Guest
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| Posted: Fri Mar 22, 2013 4:16 pm Post subject: Disabling front cabin heat? |
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I posted this awhile back on what I did:
I have a small piece of KoolMat http://www.aircraftspruce.com/pages/ap/insulation/koolmat.php on the firewall. It is between the cabin heat control valves and the firewall, then extents up and over the top of the valves. The idea is to not blast the engine and fuel pump with hot heat muff air that bounces off the valves back toward the engine when the valves are shut (on hot days when you least want hot air banging on the fuel pump). So the KoolMat insulates some thermal heat transfer to the firewall, and looping the KoolMat over the top and then down in front of the valves directs the dumped heat muff air down and away from the engine.
Regarding the heat muff air itself, there is a balance between having heat on a cold day, and on hot days robbing engine cooling air off the top of the engine just to dump hot air near the cowl exit – right where you want the lowest pressure possible to draw more cooling air through the engine. I have two 2” SCAT hose flanges over #5 cylinder, one for each heat muff. This proved to be way too much air volume. I put a piece of .025 aluminum disc with a 1” hole in it over the edge of each flange (the disc is just a bit bigger than the flange diameter). The disc is held in with aluminum tape and the SCAT hose slides over it. This does two things; reduces the volume of air coming off the top of the engine and slows down the air in the heat muff so the air is warmer, but less flow in the cabin. This is still more heat than I’ll likely ever need, but I’m happy with the compromise. If you are still building, an easier way to do this is to just have one 2” flange on the rear baffle, then a Y to connect two SCAT hoses.
One other trick I did was fabricate a couple of 2” to 1.5” reducers so I could run 1.5” SCAT hose in the tunnel for the rear heat. This solves a lot of clearance issues caused by the 2” rear heat SCAT hose.
Carl
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Greg McFarlane
Joined: 12 Apr 2012
Posts: 57
Location: Albany Western Australia
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| Posted: Sat Mar 23, 2013 3:32 am Post subject: Re: Disabling front cabin heat? |
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One simple way of keeping both front and rear heat from blasting hot air on the firewall, fuel pump etc when not needed is to install Aircraft Spruce Part # 08-07296 and dump the hot air down near the bottom. The down side is one or two more push- pulls. Cheers Greg
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johngoodman
Joined: 18 Sep 2006
Posts: 530
Location: GA
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| Posted: Sat Mar 23, 2013 5:27 am Post subject: Re: Disabling front cabin heat? |
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| Quote: | It took me a while, but I finally understand!!! Which causes my addled brain to ask ..... Did anyone insulate the firewall??? On the engine side or cabin side ..... and with what???
Linn .... so many things to think about .... |
Firewall heat is not an issue for me because of my LS1 Corvette engine, which is water cooled. I use hoses from the water pump connected to a race car defroster/heater. The two speed motor on the heater works fine. I also have a water cutoff push/pull for heat control and/or leaks. But, that's not what you're asking....
Here is what I used on the engine side of the firewall:
http://www.aircraftspruce.com/catalog/appages/firewall2000.php?clickkey=97077
It's actually called a firewall ceramic blanket. I used a combination of rivets and a caulk type adhesive that is recommended for the blanket. The stainless steel side will cut you like nobody's business! It's holding up great.
I used the standard Soundex insulation on the cabin side of the firewall. I also used Abesco FP200 expanding foam in the floors, etc. Here is a link to it: http://fp200abesco.com/
Hope this helps,
John
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partner14
Joined: 12 Jan 2008
Posts: 540
Location: Granbury Texas
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| Posted: Sat Mar 23, 2013 8:05 am Post subject: Disabling front cabin heat? |
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Sure you can remove the heat muff.... I did... And as far as I know.... no one has done this.... I have cold air induction, and one of the things I did to cool things down a bit was to run the rear cabin heat air straight out of the back of #5 cyl over the top and into a fiberglass "Y" I made that has the 4" line from #6 and that 2" line from #5 going into the "Y", and into the oil cooler. In the winter I put alum tape over the outlet for the 2" line (at the back of the plenum for #5) and use the butterfly valve on the 4" line to keep the oil temp exactly where I want it.
I also used a "Y" to split the heat from the remaining muff into both the front and rear heat ducts.
Don McDonald
500+ hours, ad it gets better every day!
--- On Fri, 3/22/13, Linn <flying-nut(at)cfl.rr.com> wrote:
| Quote: |
From: Linn <flying-nut(at)cfl.rr.com>
Subject: Re: Disabling front cabin heat?
To: rv10-list(at)matronics.com
Date: Friday, March 22, 2013, 4:36 PM
It took me a while, but I finally understand!!! Which causes my addled brain to ask ..... Did anyone insulate the firewall??? On the engine side or cabin side ..... and with what???
Linn .... so many things to think about ....
On 3/22/2013 4:46 PM, Rob Kochman wrote:
| Quote: | Thanks, Gordon... the reason I want to disable it is that it dumps hot air directly onto the firewall, which makes the cabin warmer. Anyone know if it's possible to remove the heat muff completely?
On Thu, Mar 21, 2013 at 2:00 PM, Gordon Anderson <[url=/mc/compose?to=mregoan(at)hispeed.ch]mregoan(at)hispeed.ch[/url]> wrote:
| Quote: | Rob,
I think your concern is valid. The muff will insulate the exhaust pipe and you may end up with a high temperature gradient between the section outside the muff and inside it, possibly resulting in deformation or cracking after a while. Since cracking would release exhaust into the cowl area, it could become a real concern. Personally I would keep the cool air supply to the muff and dump the hot air coming out of it. Since that is what happens in the stock system when the heater flap valve is closed, I don't follow why you want to disable it at all, rather than just not use it. If I really wanted to disable it I would probably just disconnect the control cable and use Biotherm to seal the flap in the closed position.
Gordon Anderson
On Mar 21, 2013, at 2:44 PM, Rob Kochman wrote:
| Quote: | Thanks, guys... my concern is that with no airflow into the muff, it's acting as an insulator on the exhaust pipe. Perhaps it's nothing to worry about, though.
-Rob
On Thu, Mar 21, 2013 at 5:32 AM, Jesse Saint <[url=/mc/compose?to=jesse(at)saintaviation.com]jesse(at)saintaviation.com[/url]> wrote:
| Quote: | Rob,
Not all exhaust pipes even have heat muffs. I can't imagine it getting too hot there and being ok with the temperature along the rest of the exhaust. I'd leave it off completely. Instead, you might hook it up as normal and just cover over the hole in the baffles so you could easily add it if you want to.
Jesse Saint I-TEC, Inc.
[url=/mc/compose?to=jesse(at)itecusa.org]jesse(at)itecusa.org[/url]
www.itecusa.org
www.mavericklsa.com
C: 352-427-0285
O: 352-465-4545
F: 815-377-3694
Sent from my iPhone
On Mar 20, 2013, at 11:54 PM, Rob Kochman <[url=/mc/compose?to=rv10rob(at)gmail.com]rv10rob(at)gmail.com[/url]> wrote:
| Quote: | Has anyone disabled the front cabin heat in their RV-10? I'm finding that even on really cold days, I only need partial rear heat to keep things warm, and I never use the front heat, since I want to minimize heat behind the panel. In the warm summer months, I don't want all that hot air blowing on the firewall. I don't think I can just disconnect the air hose to the muff, since the exhaust pipe would probably get too hot. If nothing else, I figure I could disconnect the air hose between the muff and firewall at the firewall and just point it down toward the cowl exit. Of course, I would have to seal the hole in the firewall.
Anyone have any suggestions? Thanks...
-Rob
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Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
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Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
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Rob Kochman
RV-10 Flying since March 2011
Woodinville, WA
http://kochman.net/N819K
No virus found in this message.
Checked by AVG - www.avg.com
03/21/13 http://www.matronics.c==================
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