Today's Message Index:
----------------------
1. 08:43 AM - OH Vent Controller Report (bcondrey)
2. 08:51 AM - Re: OH Vent Controller Report (tsts4)
3. 09:53 AM - Re: Re: OH Vent Controller Report (Albert Gardner)
4. 09:53 AM - Re: Re: OH Vent Controller Report (Rick)
5. 10:06 AM - Re: Re: OH Vent Controller Report (Bob Leffler)
6. 12:54 PM - Re: Re: OH Vent Controller Report (gary)
7. 04:52 PM - Re: OH Vent Controller Report (bcondrey)
8. 05:38 PM - Re: Re: OH Vent Controller Report (Robin Marks)
9. 07:23 PM - Re: Re: OH Vent Controller Report (Miller John)
10. 07:35 PM - Re: Re: OH Vent Controller Report (Fred Williams, M.D.)
11. 08:30 PM - RV-10 Fire (Tim Olson)
12. 08:56 PM - Re: RV-10 Fire (DLM)
13. 09:01 PM - Re: RV-10 Fire (Perry, Phil)
Message 1
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| Subject: | OH Vent Controller Report |
One of the issues with overhead consoles fed via a pair of NACA vents is that you get a LOT of air at relatively high pressure. The downside is that the air coming out the individual vents in the console is at high pressure so for a comfortable amount of air you wind up with them almost closed. I had been considering installing butterfly valves in the feed lines but during a discussion with Geoff Combs (http://www.aerosportproducts.com/) I found out that he already had a solution in mind. He sent me a prototype of his OH console vent controller and it's GREAT! It allows you to remotely adjust the air flow into the OH console and the end result is that you have the interior vents at low pressure but providing a high volume of air to the passengers.
Install is simple - it has a couple of 2" segments with butterfly valves in them
controlled by a single servo. Just connect those into your air feed. There's
a very small control module (about 3/4" x 2") with a potentiometer on it the
connects to the servo via supplied 3 conductor wire. It also needs power/ground
to the control module. I installed the control module in my OH console and
supplied power from an inline fuse protected wire off the switched side of
the battery contactor so wire run was simple and didn't require anything in the
panel. Total install time was a couple hours including removal/reinstall of
the baggage bulkhead.
If you've got an OH console you can relate to the high air pressure issue - this
is a very elegant solution.
In the spirit of full disclosure: except for having received one of the prototype
units for testing I have no financial interest in Geoff's company or the product.
Bob
RV-10 N442PM
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=297110#297110
Message 2
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| Subject: | Re: OH Vent Controller Report |
Bob (and anyone else flying with an OH console), besides using Geoff's controller,
what are the pros or cons with just going with one NACA vent vs two to feed
the OH.
--------
Todd Stovall
728TT (reserved)
RV-10 Empacone, Wings
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=297111#297111
Message 3
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| Subject: | Re: OH Vent Controller Report |
I have 2 NACA feeds to my OH console and it is just fine. This is the HOT
part of the country with mucho days of +100 temps. My summertime flying at
low altitudes has all vents wide open and wishing for more. I even use one
of those tent coolers in the back seat to help out while on the ground.
Albert Gardner
N991RV
Yuma, AZ
-----Original Message-----
Bob (and anyone else flying with an OH console), besides using Geoff's
controller, what are the pros or cons with just going with one NACA vent vs
two to feed the OH.
Todd Stovall
728TT (reserved)
RV-10 Empacone, Wings
Message 4
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| Subject: | Re: OH Vent Controller Report |
I have two vents, one would be plenty but I'm not sure how good one
would be during taxi. The airflow on the ground with two is great. In
the air I need to keep the vent pointed away from my mic due to the
velocity of the air even turned way down
Rick
On May 8, 2010, at 8:51 AM, "tsts4" <tsts4@verizon.net> wrote:
>
> Bob (and anyone else flying with an OH console), besides using
> Geoff's controller, what are the pros or cons with just going with
> one NACA vent vs two to feed the OH.
>
> --------
> Todd Stovall
> 728TT (reserved)
> RV-10 Empacone, Wings
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=297111#297111
>
>
Message 5
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| Subject: | Re: OH Vent Controller Report |
Con: One side of the aircraft being a few ounces lighter than the other. :^)
I thought about this for awhile and just put them both in. I don't think
there is any particular advantage or disadvantage.
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of tsts4
Sent: Saturday, May 08, 2010 11:51 AM
Subject: RV10-List: Re: OH Vent Controller Report
Bob (and anyone else flying with an OH console), besides using Geoff's
controller, what are the pros or cons with just going with one NACA vent vs
two to feed the OH.
--------
Todd Stovall
728TT (reserved)
RV-10 Empacone, Wings
Message 6
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| Subject: | Re: OH Vent Controller Report |
You know why they don't send donkeys to college? No one likes a smart
donkey!!
Sorry Bob, I just couldn't resist.
Gary Specketer
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Bob Leffler
Sent: Saturday, May 08, 2010 12:59 PM
Subject: RE: RV10-List: Re: OH Vent Controller Report
Con: One side of the aircraft being a few ounces lighter than the other. :^)
I thought about this for awhile and just put them both in. I don't think
there is any particular advantage or disadvantage.
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of tsts4
Sent: Saturday, May 08, 2010 11:51 AM
Subject: RV10-List: Re: OH Vent Controller Report
Bob (and anyone else flying with an OH console), besides using Geoff's
controller, what are the pros or cons with just going with one NACA vent vs
two to feed the OH.
--------
Todd Stovall
728TT (reserved)
RV-10 Empacone, Wings
Message 7
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| Subject: | Re: OH Vent Controller Report |
In response to the question about whether one NACA vent would be sufficient: I
don't think anybody has tested that. The original (Accuracy Avionics) method
had a single 2" vent in the tail fairing - kind of a smaller version of the 727
look. When a few of us decided that we didn't want that, a NACA vent approach
was taken but early adopters didn't know 1) if there would be sufficient flow
with a single vent, and 2) whether the left or right side would be better placement.
I was actually going to figure this out by blocking off one and a time and test
flying but Geoff's controller negated the need.
Bob
RV-10 N442PM
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=297136#297136
Message 8
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| Subject: | Re: OH Vent Controller Report |
I was one of the semi-early installers / flying -10's with the AA OH
Console. I asked the same question over 2 years ago with no definite
answer. After some consideration I placed both NACA vents in for my
system. Once flying I covered one vent to test and found that much less
air was available for ground ops and slightly less pleasure but still
acceptable amounts were available in flight. Please note in reflecting
back on my test observation I am sure I had both back vents closed so
please take that into consideration when making your decision. I would
place both NACA vents in again if I were in the position to decide. I do
plan on adding the electrically controlled valve during my condition
inspection (once I find out the pricing).
Good luck,
Robin
Message 9
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| Subject: | Re: OH Vent Controller Report |
I'm one of Tony's first customers. I did not use NACA vents but made
a couple of small "dog ears" that I placed under the horizontal tail
on both sides.
Works pretty good, and in the winter I plug one or both of them up to
keep air flow to a minimum into the console when OAT is really cold.
Not sure it would be so easy to plug up a NACA vent that goes straight
into the flex tubing feeding the console.
It is nice to have the overhead vents so you can turn down the NACA
side vents as needed.
My 2 cents.
grumpy
N184JM
do not archive
On May 8, 2010, at 6:50 PM, bcondrey wrote:
> >
>
> In response to the question about whether one NACA vent would be
> sufficient: I don't think anybody has tested that. The original
> (Accuracy Avionics) method had a single 2" vent in the tail fairing
> - kind of a smaller version of the 727 look. When a few of us
> decided that we didn't want that, a NACA vent approach was taken but
> early adopters didn't know 1) if there would be sufficient flow with
> a single vent, and 2) whether the left or right side would be better
> placement.
>
> I was actually going to figure this out by blocking off one and a
> time and test flying but Geoff's controller negated the need.
>
> Bob
> RV-10 N442PM
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=297136#297136
>
>
Message 10
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| Subject: | Re: OH Vent Controller Report |
I have the Accuracy Avionics overhead and two Naca inlets. I have a
CO monitor and have noted that occasionally, I will get a warning when
flying low and with the overhead vents open. Seems to only happen with
a crosswind . I wonder if the corkscrew airflow is putting some of the
exhaust in the right NACA duct. Will try and block off each side and
see if it helps or recurrs.
I do like the overhead airflow. It is nice on the hot Texas days.
Dr Fred
515 FW
tsts4 wrote:
>
> Bob (and anyone else flying with an OH console), besides using Geoff's controller,
what are the pros or cons with just going with one NACA vent vs two to feed
the OH.
>
> --------
> Todd Stovall
> 728TT (reserved)
> RV-10 Empacone, Wings
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=297111#297111
>
>
>
Message 11
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Just caught this on VAF...
http://www.vansairforce.com/community/showthread.php?t=57715
Would be nice to hear that he's really ok, if anyone
knows how bad off they were.
--
Tim Olson - RV-10 N104CD
do not archive
Message 12
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We will also need to know where the fire started? Forwall forward or
firewall aft (tunnel)? What engine and what, if any, modifications were made
to the original Vans plan? N46007 already has a fire bottle that will spray
Halon over the engine, between the firewall and the aft baffling. A small
further mod could dump a limited amount of Halon into the tunnel.
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Tim Olson
Sent: Saturday, May 08, 2010 8:29 PM
Subject: RV10-List: RV-10 Fire
Just caught this on VAF...
http://www.vansairforce.com/community/showthread.php?t=57715
Would be nice to hear that he's really ok, if anyone knows how bad off they
were.
--
Tim Olson - RV-10 N104CD
do not archive
Message 13
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I've been watching that too... Sounds like he's burned but okay.
Not trying to speculate, but this event caused me to think through a
couple of topics.
Anyone know if the fuel boost pump and flap motors are explosion
resistant? If not, they probably should be since there are several fuel
lines that share the same enclosed airspace as both electrical items.
I was thinking this through earlier this morning and now I think the
RV-10 POH should say any smell of fuel in the cabin should immediately
mean no flaps and no boost pump.
For the record, I don't even know if he was operating either. Just
thinking through a gotcha scenario for the benefit of the group.
Phil
-----Original Message-----
From: Tim Olson [mailto:Tim@myrv10.com]
Sent: Saturday, May 08, 2010 10:29 PM
Subject: RV10-List: RV-10 Fire
Just caught this on VAF...
http://www.vansairforce.com/community/showthread.php?t=57715
Would be nice to hear that he's really ok, if anyone
knows how bad off they were.
--
Tim Olson - RV-10 N104CD
do not archive
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