 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
Larry Bowen
Joined: 09 Jan 2006
Posts: 802
Location: NC, USA
|
 Posted: Tue Jul 04, 2006 7:17 pm Post subject: Heat muff overheat? |
 |
|
Are there any problems closing off the air flow to the heat muff during the
summer months? It's air supply is a 2" hole off the baffling behind
cylinder #3. My concern is that without the flow through the heat muff, it
may get too hot and melt or burst into flames or worse! What do you think?
-
Larry Bowen, RV-8 196 Hrs.
Larry(at)BowenAero.com
http://BowenAero.com
| | - The Matronics RV-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?RV-List |
|
_________________
Larry Bowen
RV-8 SOLD,
RV-7QB in progress... |
|
| Back to top |
|
 |
jim jewell
Joined: 09 Jan 2006
Posts: 82
Location: Kelowna B.C. Canada
|
| Posted: Tue Jul 04, 2006 8:12 pm Post subject: Heat muff overheat? |
|
|
Hello Larry,
If you have used a correctly designed cabin heat door or valve on the
firewall there should not be any need to cut off the flow at the supply end.
A correctly designed heat door will spill the muff heated air out to the hot
side of the firewall area in the closed position.
If you wish to cut of the flow of heated air to the lower reaches of the hot
side for cooling and or drag reasons then I would suggest that the heat muff
and hoses for same should be removed for the reasons that you have already
suggested. This of course will disable the cabin heat feature but would most
likely reduce drag by some very hard to measure amount.
Jim in Kelowna - The 6-A slider weighed in at 1134 LB.today O360-A1A with
CS. Have not done W&B as yet
---
| | - The Matronics RV-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?RV-List |
|
_________________
"I never make mistreaks" |
|
| Back to top |
|
|
klwerner(at)comcast.net
Guest
|
| Posted: Tue Jul 04, 2006 8:32 pm Post subject: Heat muff overheat? |
|
|
Take the heatmuff out altogether for the summer months!
You don't need it during that time and your engine will have much less stuff in the way of disturbing the cooling airflow (down below the cylinders)!
do not archive
[quote] ---
| | - The Matronics RV-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?RV-List |
|
|
|
| Back to top |
|
|
Dale Ensing
Joined: 11 Jan 2006
Posts: 571
Location: Aero Plantation Weddington NC
|
| Posted: Wed Jul 05, 2006 3:15 am Post subject: Heat muff overheat? |
|
|
| Quote: |
Are there any problems closing off the air flow to the heat muff during
the
|
| Quote: | summer months? It's air supply is a 2" hole off the baffling behind
cylinder #3. My concern is that without the flow through the heat muff,
it
|
| Quote: | may get too hot and melt or burst into flames or worse! What do you
think?
|
| Quote: | > Larry Bowen, RV-8 196 Hrs.
|
Larry,
I have a hot/cold air mixer valve that dumps a small portion of the heated
air when set for full cold air to the cabin. It does this thru a hole in the
valve that is about 5/8" diameter as I remember. I also have two heat muffs
in series so the heated air passing thru the valve is quite warm. Have 120
hours on the system and no indication of deterioration of the system.
This would seems to indicate that you could perhaps substantially block the
2" opening but allow some air to continually pass to moderate the muff
temperature.
Dale Ensing
| | - The Matronics RV-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?RV-List |
|
_________________
Dale Ensing
RV-6A
Aero Plantation
Weddington NC |
|
| Back to top |
|
|
Larry Bowen
Joined: 09 Jan 2006
Posts: 802
Location: NC, USA
|
| Posted: Wed Jul 05, 2006 5:40 am Post subject: Heat muff overheat? |
|
|
Thanks Dale and others for the input. Yes, I have the standard heat
muff/heat box/etc setup. The objective is to patch the 2" "hole" in the
baffling to maximize cyl head cooling during the hottest summer months.
Taking the whole system out is an option, but patching the baffling hole
is a simpler option.
--
Larry Bowen
Larry(at)BowenAero.com
http://BowenAero.com
Dale Ensing wrote:
| Quote: |
>
> Are there any problems closing off the air flow to the heat muff during
the
> summer months? It's air supply is a 2" hole off the baffling behind
> cylinder #3. My concern is that without the flow through the heat muff,
it
> may get too hot and melt or burst into flames or worse! What do you
think?
> > Larry Bowen, RV-8 196 Hrs.
>
Larry,
I have a hot/cold air mixer valve that dumps a small portion of the heated
air when set for full cold air to the cabin. It does this thru a hole in
the
valve that is about 5/8" diameter as I remember. I also have two heat
muffs
in series so the heated air passing thru the valve is quite warm. Have 120
hours on the system and no indication of deterioration of the system.
This would seems to indicate that you could perhaps substantially block
the
2" opening but allow some air to continually pass to moderate the muff
temperature.
Dale Ensing
|
| | - The Matronics RV-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?RV-List |
|
_________________
Larry Bowen
RV-8 SOLD,
RV-7QB in progress... |
|
| 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
