Today's Message Index:
----------------------
1. 07:33 PM - Cockpit cooling (Jim Stone)
2. 09:29 PM - Re: Cockpit cooling (rocketman)
3. 09:39 PM - Re: Cockpit cooling (Fred LaForge)
4. 09:59 PM - Re: Cockpit cooling (H.Ivan Haecker)
Message 1
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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
Message 2
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| Subject: | Re: Cockpit cooling |
At 07:31 PM 5/21/2008, you wrote:
Bakersfield is a dry HEAT!! Ha ha!
You have that muggy heat!
Check with 2nelson@prodigy.net Greg nelson. He has a nice set up
that I was going to do but never did
Harry
>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
>
Message 3
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| Subject: | Re: Cockpit cooling |
Jim, I tried air off the back of the engine plenum on my RV-4,,,,
Too warm. I would recomend a NACA vent. and thick insulation on firewall
and under your feet.
----- Original Message -----
From: Jim Stone
To: rocket-list@matronics.com
Sent: Wednesday, May 21, 2008 7:31 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
Message 4
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| Subject: | Re: 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
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