Today's Message Index:
----------------------
1. 04:41 AM - Re: Cockpit cooling (Tom Martin)
2. 06:36 AM - Re: Cockpit cooling (Jim Stone)
3. 06:58 AM - Re: Cockpit cooling (Rob Ray)
4. 04:33 PM - Cockpit Cooling (H.Ivan Haecker)
5. 05:14 PM - Re: Cockpit Cooling (Jim Stone)
Message 1
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Jim
I pick up my pilot air from a hole in the leading edge. There
is room to get an opening in the faring between the wing and the fuselage.
The air goes through a hole in the fuse and the hose then goes up the back
of the #2 bulkhead. There is lots of cool fresh air from this location.
Tom Martin
_____
From: owner-rocket-list-server@matronics.com
[mailto:owner-rocket-list-server@matronics.com] On Behalf Of Jim Stone
Sent: May 21, 2008 10:31 PM
Subject: Rocket-List: Cockpit cooling
Hey Guys,
My cockpit air comes from a two inch scat going from a hole in the upper
rear baffle on the left/center side, same side as my oil cooler, and then
goes to a firewall mixer valve which allows heat muff air to be mixed with
it. My complaint is, this air is too warm on a day that is 75 degrees or
warmer. I have a Naca vent under the right wing that brings in cool outside
air but it goes only to the rear seater. I would like to change the front
seat set up and leave the rear seat the way it is. My question is, has
anyone put a 2" hole in the forward horizontal baffle, in front of number 2
cyl and pulled the air down and aft to the mixer valve on the firewall? Or,
has anyone just tied a scat hose along the top of the engine from the aft
baffle to the cowl opening in front of number 2 cyl. in an effort to catch
the air before it warms up.
My setup is similar to John Harmon's, and he told me years ago that it works
fine for him, so I assumed if it works in the Bakersfield desert, it will
work in Louisville. Perhaps my setup is not as similar to John's as I think.
TIA,
Jim Stone
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igator?Rocket-List
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Checked by AVG.
12:00 AM
Message 2
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| Subject: | Re: Cockpit cooling |
Hey Ivan,
I think your plan may be the easiest to try first. If pics are not to
difficult, please send me a few. In particular, I would like to see the
scoop or forward end of the scat tube and how it sits in the intake.
Thanks for your help,
Jim
----- Original Message -----
From: H.Ivan Haecker
To: rocket-list@matronics.com
Sent: Thursday, May 22, 2008 12:56 AM
Subject: Re: Rocket-List: Cockpit cooling
Jim,
I had a similar set up on my rv-4. The air was taken off the rear
baffle and run into the cockpit. It was ok until it got hot in the
summertime. It was really bad when I slowed down in the pattern.I
changed the set up and extended the tube forward across the top of the
crankcase to the left opening in the front of the cowl. That was much
better. I now measure only a 3-4 degree increase in temperature compared
to the rear vent outlet which comes from under the wing. I terminated
the scat tube with an aluminum end to dress it up visually up front.
With a 540 engine instead of a 320 the heat picked up may be more
especially due to the longer length. I plan to do the same on my rocket
if I ever can finish it.... I can get pictures if you need them.
Ivan Haecker rv-4 1455hrs. S. Cen. TX
----- Original Message -----
From: Jim Stone
To: rocket-list@matronics.com
Sent: Wednesday, May 21, 2008 9:31 PM
Subject: Rocket-List: Cockpit cooling
Hey Guys,
My cockpit air comes from a two inch scat going from a hole in the
upper rear baffle on the left/center side, same side as my oil cooler,
and then goes to a firewall mixer valve which allows heat muff air to be
mixed with it. My complaint is, this air is too warm on a day that is
75 degrees or warmer. I have a Naca vent under the right wing that
brings in cool outside air but it goes only to the rear seater. I would
like to change the front seat set up and leave the rear seat the way it
is. My question is, has anyone put a 2" hole in the forward horizontal
baffle, in front of number 2 cyl and pulled the air down and aft to the
mixer valve on the firewall? Or, has anyone just tied a scat hose along
the top of the engine from the aft baffle to the cowl opening in front
of number 2 cyl. in an effort to catch the air before it warms up.
My setup is similar to John Harmon's, and he told me years ago that
it works fine for him, so I assumed if it works in the Bakersfield
desert, it will work in Louisville. Perhaps my setup is not as similar
to John's as I think.
TIA,
Jim Stone
href="http://www.matronics.com/Navigator?Rocket-List">http://www.matron
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
Message 3
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My very early (96') HR2 was set up with rear engine baffle cockpit fresh air when
I bought it. For the SE USA, it was completely inadequate. I had an AE friend
look over the fuselage sides and located the best high pressure area for Vans
style NACA ducts and installed one on either side of the Fuselage with Hysol
structural epoxy(no rivets). They are ducted inside via 2" SCAT to large aluminum
eyeball vents from Acft Spruce. I also vented the rear baggage compartment
into the aft fuselage by cutting 4-3" holes in the rear baggage access door
and putting screen door screen behind the holes. "You can't get air in without
getting it out".
Now at cruise speeds the airflow through the vents will nearly "peel paint". I
like it!
Rob Ray
HR2
--- On Thu, 5/22/08, Tom Martin <fairlea@amtelecom.net> wrote:
From: Tom Martin <fairlea@amtelecom.net>
Subject: RE: Rocket-List: Cockpit cooling
Jim
I pick up my pilot air from a
hole in the leading edge. There is room to get an opening in the faring
between the wing and the fuselage. The air goes through a hole in the fuse and
the hose then goes up the back of the #2 bulkhead. There is lots of cool fresh
air from this location.
Tom Martin
From:
owner-rocket-list-server@matronics.com
[mailto:owner-rocket-list-server@matronics.com] On Behalf Of Jim Stone
Sent: May 21, 2008 10:31 PM
Subject: Rocket-List: Cockpit
cooling
Hey Guys,
My cockpit air comes from a two inch scat going from a
hole in the upper rear baffle on the left/center side, same side as my oil
cooler, and then goes to a firewall mixer valve which allows heat muff air to
be mixed with it. My complaint is, this air is too warm on a day that is
75 degrees or warmer. I have a Naca vent under the right wing that brings
in cool outside air but it goes only to the rear seater. I would like to
change the front seat set up and leave the rear seat the way it is. My
question is, has anyone put a 2" hole in the forward horizontal baffle, in
front of number 2 cyl and pulled the air down and aft to the mixer valve on the
firewall? Or, has anyone just tied a scat hose along the top of the engine
from the aft baffle to the cowl opening in front of number 2 cyl. in an effort
to catch the air before it warms up.
My setup is similar to John Harmon's, and he told me years
ago that it works fine for him, so I assumed if it works in the
Bakersfield desert, it will work in
Louisville . Perhaps my setup is not as
similar to John's as I think.
TIA,
Jim Stone
Checked by AVG.
Checked by AVG.
Message 4
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Jim,
Here is a picture that I have readily available. I'm not sure how to
send to the list, so if the picture doesn't come through, send me your
e-mail address and I can send it directly to you. If you need more
detail, I can take more pictures this weekend.
Ivan Haecker
Message 5
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| Subject: | Re: Cockpit Cooling |
I got the pic, thanks Ivan.
Jim
----- Original Message -----
From: H.Ivan Haecker
To: rocket-list@matronics.com
Sent: Thursday, May 22, 2008 7:30 PM
Subject: Rocket-List: Cockpit Cooling
Jim,
Here is a picture that I have readily available. I'm not sure how to
send to the list, so if the picture doesn't come through, send me your
e-mail address and I can send it directly to you. If you need more
detail, I can take more pictures this weekend.
Ivan Haecker
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