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jdalton77(at)comcast.net
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 Posted: Mon Sep 25, 2006 4:06 pm Post subject: James Cowl and Plenum - Web Site? |
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I've read a lot about the James cowl and plenum on the list. Not having stayed in a Holiday Inn Express last night - what is it and why would I want/need it?
I have not been able to find any web information on this. Does "James" have a website?
Jeff
455
[quote][b]
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rvbuilder(at)sausen.net
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| Posted: Mon Sep 25, 2006 5:07 pm Post subject: James Cowl and Plenum - Web Site? |
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Start by searching the archives, it’s been discussed a couple times. Website can be found at www.jamesaircraft.com.
I will be using both the plenum and the cowl, not flying yet though. The plenum is very efficient at cooling the engine by reducing the volume and directing the flow of air through the cowl.
The cowl does a few things. First is it is aerodynamically cleaner than the stock Van’s cowl. Also it is much better at matching the inlet and exhaust pressure of the air. You ideally want 1:1 for those pressures which results in no drag. Anything higher and the airstream is transferring its energy to the airframe somewhere in the engine compartment. It, combined with the plenum, also does a good job at slowing the volume of air down to extract the maximum amount of heat from the engine and then speeding it back up to the airstream speed as it exists. Again that 1:1 thing.
Many people swear by the combination, or even each individually. There are plenty of examples of documented top speed increases from using the cowl. Hope that helps.
Michael Sausen
-10 #352 Buildus Interuptus
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of jdalton77
Sent: Monday, September 25, 2006 7:06 PM
To: rv10-list(at)matronics.com
Subject: James Cowl and Plenum - Web Site?
I've read a lot about the James cowl and plenum on the list. Not having stayed in a Holiday Inn Express last night - what is it and why would I want/need it?
I have not been able to find any web information on this. Does "James" have a website?
Jeff
455
01234567890123
[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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AV8ORJWC
Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"
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| Posted: Mon Sep 25, 2006 6:07 pm Post subject: James Cowl and Plenum - Web Site? |
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Michael, thank you again for posting the second generation of Wholly Cowl, your shots show a marked improvement over the first Generation one for John Goodlad’s RV-10 from the below website. Hopefully it’s yours or Deems and we will be hearing more soon.
John
600
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of RV Builder (Michael Sausen)
Sent: Monday, September 25, 2006 6:06 PM
To: rv10-list(at)matronics.com
Subject: RE: James Cowl and Plenum - Web Site?
Start by searching the archives, it’s been discussed a couple times. Website can be found at www.jamesaircraft.com.
I will be using both the plenum and the cowl, not flying yet though. The plenum is very efficient at cooling the engine by reducing the volume and directing the flow of air through the cowl.
The cowl does a few things. First is it is aerodynamically cleaner than the stock Van’s cowl. Also it is much better at matching the inlet and exhaust pressure of the air. You ideally want 1:1 for those pressures which results in no drag. Anything higher and the airstream is transferring its energy to the airframe somewhere in the engine compartment. It, combined with the plenum, also does a good job at slowing the volume of air down to extract the maximum amount of heat from the engine and then speeding it back up to the airstream speed as it exists. Again that 1:1 thing.
Many people swear by the combination, or even each individually. There are plenty of examples of documented top speed increases from using the cowl. Hope that helps.
Michael Sausen
-10 #352 Buildus Interuptus
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of jdalton77
Sent: Monday, September 25, 2006 7:06 PM
To: rv10-list(at)matronics.com
Subject: James Cowl and Plenum - Web Site?
I've read a lot about the James cowl and plenum on the list. Not having stayed in a Holiday Inn Express last night - what is it and why would I want/need it?
I have not been able to find any web information on this. Does "James" have a website?
Jeff
455
[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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Tim(at)MyRV10.com
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| Posted: Mon Sep 25, 2006 6:17 pm Post subject: James Cowl and Plenum - Web Site? |
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I'm watching the James cowl and plenum results closely
as it may be a great thing to have some day if it gives the
results quoted by people. That said, from what I understand
there are currently zero RV-10's flying with this cowl and plenum
arrangement, so everything related is speculation....the same
as it was with the RV-10 in general when many of us bought the
kit before there were even 2 of them flying. No, I'm not
at all putting the cowl down....but honestly, there aren't
any numbers available for the RV-10 yet. If it turns out
as good as the other models though, it may very well be
a great thing to go with.....and I may even re-do mine in the
future if it can prove all the benefits are there. That's the
one good thing you builders with numbers like 400+ have going
for you....the ability to see some of these things before
you finish your kit. Things are evolving every day.
Tim Olson - RV-10 N104CD - Flying
do not archive
RV Builder (Michael Sausen) wrote:
| Quote: | Start by searching the archives, it’s been discussed a couple times.
Website can be found at www.jamesaircraft.com
<http://www.jamesaircraft.com>.
I will be using both the plenum and the cowl, not flying yet though.
The plenum is very efficient at cooling the engine by reducing the
volume and directing the flow of air through the cowl.
The cowl does a few things. First is it is aerodynamically cleaner
than the stock Van’s cowl. Also it is much better at matching the inlet
and exhaust pressure of the air. You ideally want 1:1 for those
pressures which results in no drag. Anything higher and the airstream
is transferring its energy to the airframe somewhere in the engine
compartment. It, combined with the plenum, also does a good job at
slowing the volume of air down to extract the maximum amount of heat
from the engine and then speeding it back up to the airstream speed as
it exists. Again that 1:1 thing.
Many people swear by the combination, or even each individually.
There are plenty of examples of documented top speed increases from
using the cowl. Hope that helps.
Michael Sausen
-10 #352 Buildus Interuptus
*From:* owner-rv10-list-server(at)matronics.com
[mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of *jdalton77
*Sent:* Monday, September 25, 2006 7:06 PM
*To:* rv10-list(at)matronics.com
*Subject:* James Cowl and Plenum - Web Site?
I've read a lot about the James cowl and plenum on the list. Not having
stayed in a Holiday Inn Express last night - what is it and why would I
want/need it?
I have not been able to find any web information on this. Does "James"
have a website?
Jeff
455
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| | - 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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